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# US Boatworks: Lower Units & Boat Parts | USBoatworks

## Sitemaps
[XML Sitemap](https://boatengine.com/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [Why Is My Mercury Outboard Overheating? (Diagnosis & Fix)](https://boatengine.com/why-is-my-mercury-outboard-overheating-diagnosis-fix/): If your Mercury outboard is overheating, you're not alone — and you don't need to panic. After 40+ years of marine service, we've diagnosed this hundreds of times. The good news: most overheating problems trace back to a handful of common causes you can check yourself before assuming the worst.
- [🇺🇸Honoring Our Military: Save Up to $3,250 on a New Mercury Outboard🇺🇸](https://boatengine.com/honoring-our-military-save-up-to-3250-on-a-new-mercury-outboard/): To every service member, veteran, and military family — thank you. We mean that.
- [Is It Time to Repower? Mercury’s Spring Promotion Makes the Decision a Whole Lot Easier](https://boatengine.com/is-it-time-to-repower-mercurys-spring-promotion-makes-the-decision-a-whole-lot-easier/): Option 1: 4.99% Financing for 60 MonthsSpread the cost of your new Mercury engine over five years at a rate that won't keep you up at night. That's 60 months at 5.61% APR — straightforward, manageable, and a smart way to upgrade now without straining your cash flow.
- [Mercury 4.99% Repower Financing: Your Complete Guide](https://boatengine.com/mercury-4-99-repower-financing-your-complete-guide/): Here's what just changed: Mercury Marine is offering 4.99% financing through March 31, 2026 - the lowest rate we've seen in 3 years. Combined with their Precision Rigging Program and Get 7 warranty promotion, this might be the best repower opportunity in a long time.
- [Save Big with Used Boat Parts](https://boatengine.com/save-big-with-used-boat-parts/): Significant Savings: Save hundreds of dollars compared to buying brand-new OEM parts.
- [How to Get the Best Deal on Outboard Motor](https://boatengine.com/where-to-get-the-best-deal-on-outboard-motors/): The outboard motor industry has faced its share of challenges, including supply chain disruptions and surges in demand for outdoor activities. These factors led to limited availability and increased prices, making it difficult for consumers to purchase new boats and motors. However, as the industry stabilizes, buyers now have opportunities to find deals in the outboard motor market.
- [Read this before you buy a new outboard!](https://boatengine.com/read-this-before-you-buy-a-new-outboard/): Thinking about a new outboard for next season? Here are 5 quick checks to make sure you pick the right motor—and get a great deal:
- [Ways to Save Money on a New Outboard](https://boatengine.com/ways-to-save-money-on-a-new-outboard/): Introduction If you're planning to purchase a new Mercury outboard motor, you might be wondering how to make the most of your budget. In this guide, we'll explore a few effective strategies to save money, including the best times to buy, available rebates, and where to shop for the best deals.
- [How to Launch a Boat: A Stress-Free, Step-by-Step Guide](https://boatengine.com/how-to-launch-a-boat/): For those who grew up boating, towing and launching a boat might feel like second nature. They can easily maneuver their vehicle, back a trailer down the ramp, and get the boat in the water effortlessly. But for someone without experience, launching and hauling a boat can feel like a daunting and stressful task, especially with onlookers and other boaters waiting their turn.
- [Making this mistake could cost you thousands of dollars](https://boatengine.com/making-this-mistake-could-cost-you-thousands-of-dollars/): When it comes to saving money, there are some areas where you can cut costs, but boat winterization is not one of them. Improper winterization can lead to costly repairs, including cracked engine blocks, which can set you back thousands of dollars. Here's why proper winterization matters and why you should consider leaving this critical task to the professionals.
- [What to look for when choosing a Boat Mechanic](https://boatengine.com/what-to-look-for-when-choosing-a-boat-mechanic/): Your boat is a major investment—and when it comes to maintenance or repairs, choosing the right mechanic makes all the difference. Here are 10 things to look for when selecting a boat mechanic you can trust:
- [🚒 Olathe Fire Department Trusts Us to Keep Their Outboards in Top Shape!](https://boatengine.com/elementor-48052/): The Olathe Fire Department has chosen US Boatworks to supply and service their rescue boat engines. We’re honored to support the brave men and women who keep our community safe, and we’re proud that they trust us with such an important part of their mission.
- [The Challenge with Hard to find, NLA Parts](https://boatengine.com/the-challenge-with-hard-to-find-nla-parts/): Owning an older boat motor comes with its unique challenges, one of the most frustrating being the difficulty in finding replacement parts for necessary repairs. When manufacturers discontinue parts, marking them as "NLA" (No Longer Available), it leaves boat owners in a bind, often resorting to junkyards to dispose of perfectly good motors that simply need a repair.
- [How to change a Water Pump](https://boatengine.com/how-to-change-a-water-pump/): Are you ready to keep your outboard motor running cooler and more efficiently? Understanding the importance of your water pump is crucial for preventing costly engine damage. In our comprehensive guide, we’ll walk you through the essential steps to replace your outboard water pump, ensuring your boat stays in top shape all season long. Whether you're a seasoned boater or a DIY enthusiast, this easy-to-follow process will save you money and give you peace of mind. Don’t let a failing water pump ruin your day on the water—dive into our guide and learn how to tackle this vital maintenance task!
- [Spring Boat Maintenance Tips](https://boatengine.com/spring-boat-maintenance-tips/): Spring is just around the corner, even if the 40-degree temperatures suggest otherwise. As we step into April, it’s the perfect time to take your boat out of storage and start your spring maintenance routine. If you’re wondering:
- [Open Saturdays 9 – Noon](https://boatengine.com/open-saturdays-9-noon-2/): As the frigid temperatures of January give way to the warmth of spring, it's time to get your boat ready for the season! Like clockwork, the rise in temperatures brings a wave of customers eager to prepare their boats for the water. To accommodate this spring rush, we're now open on Saturdays starting March 2nd, from 9 AM – Noon. We look forward to seeing you!
- [How to Fix Loss of Power on Your Outboard Today!](https://boatengine.com/how-to-fix-loss-of-power-on-your-outboard-today/): No matter how well you care for your boat, outboard motors can eventually encounter problems. But don't worry,  we've got you covered!
- [What is the Warranty on a Mercury Motor?](https://boatengine.com/what-is-the-warranty-on-a-mercury-motor/): Introduction When purchasing an outboard motor, it’s crucial to consider the warranty offered by the manufacturer. A robust warranty not only reflects the quality of the motor but also the company’s confidence in its product and commitment to customer satisfaction. With a Mercury outboard, you gain peace of mind knowing that unexpected repairs or issues are covered, ensuring a stress-free boating experience.
- [How to Fix Outboard Problems Now: Rough Idle](https://boatengine.com/how-to-fix-outboard-problems-now-rough-idle/): Ahoy Boat Lovers!
- [How to Fix Outboard Problems Now: Engine Starting](https://boatengine.com/how-to-fix-outboard-problems-now-engine-starting/): No matter how well you care for your boat, outboard motors can eventually encounter problems. But don't worry,  we've got you covered!
- [Why you need to Winterize your Outboard or Sterndrive?](https://boatengine.com/why-you-need-to-winterize-your-outboard-or-sterndrive/): When our beloved boating season ends, your outboard or sterndrive needs some special care before it sits idle during the winter months. This process, called winterizing, protects your boat’s engine and keeps it in top shape for when you’re ready to hit the water again in the spring.Skipping this step can lead to serious problems. Water left in the engine can freeze and expand, causing parts to crack or break. Fuel can go bad and clog up your system, and corrosion might set in, damaging vital components. Fixing these issues can cost you a lot more than the time and effort it takes to winterize properly.By winterizing your boat, you're preventing these problems and ensuring it stays reliable and ready to go when the weather warms up. It’s like giving your boat a little TLC to keep it running smoothly for years to come. Whether you own an outboard motor or a sterndrive, winterizing is an easy way to protect your investment and avoid headaches down the road.
- [Can I Use Automotive Parts in my Boat Engine?](https://boatengine.com/can-i-use-automotive-parts-in-my-boat-engine/): Using automotive parts in a boat engine might seem like an easy way to save money, but it comes with significant risks that can jeopardize both your safety and your engine’s performance. Let’s break down the dangers of this seemingly cost-effective choice.
- [Mercury Rebates on 115-150 hp FourStroke](https://boatengine.com/mercury-rebates-on-115-150-hp-fourstroke/): Engines aren’t given the Pro XS badge – they have to earn it. Designed with input from professional anglers, the 115hp and 150hp Pro XS deliver best-in-class performance for boaters who demand the highest speeds and quickest hole shots.
- [Mercury’s 5 Year Warranty](https://boatengine.com/mercurys-free-5-year-warranty/): Mercury Marine is offering an incredible promotion for those looking to repower their boats with a reliable outboard motor. When you purchase a new 2025 Mercury outboard motor before August 31, 2024, you’ll receive an additional 2 years of factory-backed warranty, giving you a total of 5 years of coverage.
- [Where To Find Your Boat Engine Serial Number](https://boatengine.com/where-to-find-your-boat-engine-serial-number/): Finding the correct serial and model numbers for your boat motor is essential for maintenance, repairs, and replacing parts such as gearcases. These identification numbers ensure compatibility and simplify discussions with mechanics, insurance agents, and suppliers.
- [National Safe Boating Week](https://boatengine.com/national-safe-boating-week/): National Safe Boating Week is an annual campaign organized by the National Safe Boating Council (NSBC) and supported by local and national agencies to remind boaters of all experience levels about the importance of safety on the water. With more and more people taking to the seas, lakes, and rivers each year, promoting responsible boating practices is crucial for preventing accidents and ensuring everyone has an enjoyable time.
- [Introducing the Volvo-Penta DPS-B Upper](https://boatengine.com/introducing-the-volvo-penta-dp-b-upper/):  We are excited to announce the arrival of the all-new OEM Volvo-Penta DPS-B Upper Unit in our inventory! Designed with precision and built for performance, this genuine Volvo Penta part ensures unmatched durability and reliability for your boating adventures.
- [How to operate an outboard motor in freezing temperatures](https://boatengine.com/how-to-operate-an-outboard-motor-in-freezing-temperatures/): For avid duck hunters and fishermen, braving freezing temperatures is part of the adventure. Whether you’re venturing out during an early spring chill or a sudden autumn freeze, rest assured that your outboard motor is designed to function in harsh conditions. However, to ensure a smooth and safe outing, you must take precautions to prevent ice buildup both during and after use.
- [Mercury Outboard Giveaway](https://boatengine.com/mercury-outboard-giveaway/): Mercury Marine is giving away an outboard! Visit the link below to enter before March 31 for your chance to win the ultimate engine. Giving away an outboard motor allows winners to repower their boat with a brand new 2024 Mercury Outboard. Winners will be able to repower up to 250hp!
- [How to Winterize your Boat Motor](https://boatengine.com/how-to-winterize-your-boat-motor/): Winterizing your boat motor is a critical step in the boat winterization process, protecting your engine from freezing damage, corrosion, and fuel system issues. Proper boat winterization helps extend the life of your motor, save money on repairs, and ensure a smooth start to the next boating season. This guide covers essential steps like cleaning, flushing, fuel stabilization, draining water, adding antifreeze, and lubricating moving parts. Whether you winterize at home or hire a professional, following this process safeguards your engine and keeps it in peak condition for years to come. Don’t skip this crucial maintenance task! Read in detail why you need to winterize your outboard or sterndrive  
- [Get Ready to Win this Winter](https://boatengine.com/get-ready-to-win-this-winter/): As boating season winds down, now is the perfect time to start preparing for annual winterization or off-season storage. Stop by today or call us at 913-342-0011 to schedule a service appointment or get the supplies you need to make sure your boat is ready to hit the water next season. 
- [Volvo DPSM Now In Stock](https://boatengine.com/volvo-dpsm-now-in-stock/): Exciting News: DPSM Drives and Lower Units Are Available Again After a prolonged wait, the Volvo-Penta DPSM complete outdrive and DPSM lower unit are finally back in production! Volvo-Penta halted the manufacturing of these units in 2021, leaving many boaters eagerly awaiting their return. Now, over two years later, production has resumed in a very limited manner and we’ve received new stock to meet the high demand.
- [Shipping Times](https://boatengine.com/shipping-times/): UPS Standard Ground Shipping times from our US Boatworks location in Kansas City to you are shown in the map above. Should you need faster delivery times, please call us to request UPS Next Day Air or UPS 2 Day Air. We also offer US Postal service shipping as a less expensive alternative.
- [3 JAW Reverse VS 6 JAW Reverse](https://boatengine.com/3-jaw-reverse-vs-6-jaw-reverse/): When it comes to Mercury 3 & 4-cylinder lower units, one of the most critical components is the clutch dog configuration. This component determines how smoothly and effectively your outboard motor shifts gears, directly impacting performance, durability, and reliability on the water.
- [Huge Savings -Alpha One, Gen 2 Outdrives](https://boatengine.com/huge-savings-alpha-one-gen-2-outdrives/): Purchasing a new Mercruiser Alpha I, Gen 2 outdrive can be a significant investment. With OEM units priced over $3,800, many boaters are tempted to consider aftermarket alternatives. However, this decision can lead to unexpected costs and frustrations down the road. Let’s explore why Quicksilver’s Alpha 1, Gen 2 Sterndrive offers the perfect balance of quality and savings for your boating needs.
- [Dangers of Skipping an Outboard Fresh Water Flush](https://boatengine.com/dangers-of-skipping-an-outboard-fresh-water-flush/): Proper maintenance of your outboard motor is crucial for performance and longevity. One essential step many overlook is the freshwater flush after use. This practice removes dirt and debris, preventing corrosion and ensuring your cooling system works efficiently. Neglecting it can lead to costly repairs and a shorter engine lifespan. Learn the importance of a freshwater flush, how to do it correctly, and the risks of using aftermarket parts. Keep your motor running smoothly for worry-free days on the water!
- [How to Change an Outboard Fuel Filter](https://boatengine.com/how-to-change-an-outboard-fuel-filter/): Regular maintenance is essential to ensure your outboard motor operates efficiently and reliably. One critical maintenance task is replacing the fuel filter. Mercury Marine recommends inspecting and changing the fuel filter every 100–300 hours of use, or more frequently depending on operating conditions.
- [Getting to know your Outboard Motor](https://boatengine.com/getting-to-know-your-outboard-motor/): Outboard motors are integral to the performance and functionality of your boat. To maintain and repair them effectively, it’s essential to understand their main components, the types of motors available, and the best practices for purchasing replacement parts.
- [Changing Lower Unit Gear Lube in a Mercury Outboard](https://boatengine.com/changing-oil-for-your-lower-unit-in-a-mercury-outboard/): Proper maintenance of your Mercury outboard motor is essential for its efficient and reliable performance. One crucial aspect of this upkeep is changing the lower unit gear lube. This process ensures that the internal components of the motor remain well-lubricated while removing any normal wear shavings that may accumulate in the oil. Additionally, inspecting the gear lube during this process can provide valuable insights into the condition of your motor's internal parts.
- [How to Change Oil in a Mercury Outboard Motor — Step by Step](https://boatengine.com/how-to-change-oil-for-a-mercury-outboard/): Watch this video learn how to change your outboard engine oil.
Mercury Marine recommends that you change your oil at least every 100 & 300 hours. Of course, change the oil more frequently as needed.
- [Fishing Gear Checklist](https://boatengine.com/fishing-gear-checklist/): Preparing for a fishing trip can be overwhelming, especially when you’re trying to remember all the essential gear. To help you stay organized and ensure a successful outing, we’ve compiled a comprehensive fishing gear checklist. Use this guide to make sure you’re fully prepared for your next adventure on the water.
- [Outboard Maintenance Schedule](https://boatengine.com/outboard-maintenance-schedule/): If you’ve been putting off maintaining your outboard engine, you’re not alone. Perhaps you weren’t aware that regular maintenance is required, or maybe the owner’s manual is gathering dust somewhere. Whatever the reason, proper upkeep is essential to ensure your engine delivers years of trouble-free operation. Whether you’re a seasoned boater or new to outboards, this guide will help you stay on top of maintenance.
- [Do I need to replace my boat water pump?](https://boatengine.com/do-i-need-to-replace-my-boat-water-pump/): Outboard and sterndrive water pumps play a crucial role in maintaining your engine's performance and longevity. These pumps circulate water through the engine, preventing it from overheating. Without a functioning water pump, your engine’s cooling system will fail, leading to potential damage and costly repairs.
- [The Volvo SX-M Upper](https://boatengine.com/the-volvo-sx-m-upper/): High-Quality Remanufactured Units by US Boatworks This week’s product highlight is the Remanufactured Volvo-Penta SX-M Upper Gear Case from US Boatworks. Known for its durability and performance, the Volvo SX-M Upper is a popular choice for boaters, available in multiple configurations to meet diverse needs.
- [Keeping You On The Water](https://boatengine.com/keeping-you-on-the-water/): Keeping you on the water is important. Read our quarterly newsletter & stay informed.
- [Now In Stock- Mercury Outboard Motors](https://boatengine.com/now-in-stock-mercury-outboard-motors/): It’s been an exciting week at US Boatworks. We have 8 new 2023 Mercury Outboards on the showroom floor. Four of these shiny new Mercury motors for sale have 9.9 horse power and offer several different options such as electric start, tiller handle, long or short shaft and Command Thrust.
- [The Truth About Replacement Gearcases #5](https://boatengine.com/the-truth-about-replacement-gearcases-5/): Welcome to Part 5 of the Gearcase Education Course!. In the previous articles, we explored gearcase terminology and reviewed three common options for replacing your lower unit:
- [The Truth About Replacement Gearcases #4](https://boatengine.com/the-truth-about-replacement-gearcases-4/): Welcome to Part 4 of our Gearcase Education Course! In the previous articles, we discussed OEM and Non-OEM lower units. Today, we’re diving into remanufactured or rebuilt gearcases—a cost-effective and environmentally friendly option that balances quality and affordability.
- [The Truth About Gearcase Replacement #3](https://boatengine.com/the-truth-about-gearcase-replacement-3/): Welcome to Part 3 of the Gearcase Education Course! In our previous article, we explored New Non-OEM Gearcases, which offer short-term cost savings but often come with compromised quality. Now, let’s discuss the advantages of investing in a New OEM (Original Equipment Manufacturer) Gearcase.
- [The Truth About Gearcase Replacement #2](https://boatengine.com/the-truth-about-gearcase-replacement-2/): In the first article, we examined the essential components of a gearcase to better understand its role in your boat’s performance. In this second installment, we’ll delve into one of the gearcase replacement options: Non-OEM (aftermarket) gearcases.

## Pages
- [Service Manuals](https://boatengine.com/service-manuals/): Outboard and sterndrive service manuals are technical guides that provide comprehensive instructions for maintaining, troubleshooting, and repairing boat engines. These manuals serve as essential resources for boat owners, mechanics, and DIY enthusiasts who want to ensure their engines operate efficiently and safely.
- [Boat Dealers](https://boatengine.com/boat-dealers/): Boat dealers and repair shops can take advantage of our exclusive discounts when purchasing boat parts. We offer reduced pricing to verified businesses in the industry, making it easier and more affordable to source high-quality components. Our inventory includes genuine Mercruiser, Mercury, Evinrude, Johnson, OMC, Volvo-Penta, and Chrysler boat parts, ensuring that you get reliable and durable products for your customers.
- [Boat Winterization](https://boatengine.com/boat-winterization/): Don't leave your boat's well-being to chance this winter. Whether you opt for our professional winterization services or prefer to tackle certain aspects yourself with our DIY tips, US Boatworks is your trusted partner in safeguarding your boat for the colder season. Contact Us via Call, Email or Text to get a Boat Winterization service.
- [Terms Of Use](https://boatengine.com/terms-of-use/): Last updated: July 3, 2024
- [Shipping Terms](https://boatengine.com/shipping-terms/): We strive to get your orders to you quickly and securely. Here's what you need to know about shipping with us:
- [Blogs](https://boatengine.com/blogs/)
- [Mariner Boat Parts](https://boatengine.com/mariner-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Mariner outboard motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart. Find Mariner OEM parts easily with our  microfiche drawing lookup by model.
- [Force Boat Parts](https://boatengine.com/force-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Force outboard motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart. Our online Force OEM parts inventory with microfiche lookup makes selecting the right boat parts easy.
- [OMC Boat Parts](https://boatengine.com/omc-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our OMC outboard motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart. Online OMC parts lookup with microfiche drawings makes shopping for boat parts easy. 
- [Volvo Penta Boat Parts](https://boatengine.com/volvo-penta-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Volvo Penta sterndrive motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart. Online Volvo OEM parts inventory with microfiche lookup makes boat parts shopping easy.
- [Mercruiser Boat Parts](https://boatengine.com/mercruiser-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Mercruiser outboard motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart. Check out our available Mercruiser OEM parts by using the microfiche lookup tool.
- [Johnson Boat Parts](https://boatengine.com/johnson-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Johnson outboard motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart.
- [Evinrude Boat Parts](https://boatengine.com/evinrude-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Evinrude outboard motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart. Our Evinrude parts inventory with microfiche lookup makes shopping for boat parts easy.
- [Mercury Boat Parts](https://boatengine.com/mercury-boat-parts/): US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Mercury outboard motor parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place it directly in your shopping cart. Our online Mercury boat parts tool with microfiche lookup makes boat part identification and shopping easy.
- [OEM Sterndrives](https://boatengine.com/oem-sterndrives/): If you are looking for an OEM Sterndrive for your Mercruiser, Volvo-Penta, and OMC engine you have come to the right place. At US Boatworks, we have been replacing outdrives for over 40 years and have helped get thousands of boaters back on the water. Offering a wide variety of OEM Sterndrives for many boat motor brands:
- [Volvo OEM Upper Units](https://boatengine.com/volvo-oem-upper-units/): Boating is a fantastic way to explore the great outdoors, offering both thrills and relaxation on the water. To ensure your adventures are always enjoyable, having reliable equipment is key. US Boatworks offers new OEM uppers for the boater that understands the quality advantages of buying parts from your engine manufacturer.
- [Mercruiser OEM Upper Units](https://boatengine.com/mercruiser-oem-upper-units/): At US Boatworks we offer several replacement choices for  Mercruiser uppers, the remanufactured upper and the aftermarket upper. If you would like an OEM Mercruiser upper, please contact us for pricing.
- [Mercruiser Aftermarket Upper Units](https://boatengine.com/mercruiser-aftermarket-upper-units/): Boating is a fantastic way to explore the great outdoors, offering both thrills and relaxation on the water. To ensure your adventures are always enjoyable, you may want to consider an aftermarket Mercruiser Upper.
- [OMC Remanufactured Upper Units](https://boatengine.com/omc-remanufactured-upper-units/): If you are looking for a replacement upper for your sterndrive engine, you have come to the right place. US Boatworks has been remanfacturing OMC Sterndrive Uppers for over 40 years. Our uppers stand out from the competition because we build them to last. We use genuine OEM parts and have certified mechanics in house that build your upper.
- [Volvo Remanufactured Upper Units](https://boatengine.com/volvo-remanufactured-upper-units/): If you are looking for a replacement upper for your sterndrive engine, you have come to the right place. US Boatworks has been remanfacturing Volvo-Penta Sterndrive Uppers for over 40 years. To ensure your boating adventures are always enjoyable, having reliable equipment is key so always look for OEM internal parts when you are shopping for rebuilt uppers.Why you should choose our Volvo Remanufactured Upper?
- [Mercruiser Remanufactured Upper Units](https://boatengine.com/mercruiser-remanufactured-upper-units/): Boating is a fantastic way to explore the great outdoors, offering both thrills and relaxation on the water. To ensure your adventures are always enjoyable, having reliable equipment is key. US Boatworks has been remanfacturing Mercruiser Sterndrive Uppers for over 40 years. Our uppers stand out from the competition because we build them to last. We use genuine OEM parts and have certified mechanics in house that build your upper. Why you should choose our Mercruiser Remanufactured Upper...
- [OEM Upper Units](https://boatengine.com/oem-upper-units/): If you are looking for a replacement upper for your sterndrive engine, you have come to the right place. US Boatworks offers new OEM uppers for the boater that understands the quality advantages of buying parts from your engine manufacturer.
- [Aftermarket Upper Units](https://boatengine.com/aftermarket-upper-units/): If you are looking for a replacement upper for your sterndrive engine, you have come to the right place. US Boatworks offers new aftermarket uppers for the budget conscious boater.
- [Remanufactured Upper Units](https://boatengine.com/remanufactured-upper-units/): If you are looking for a replacement upper for your sterndrive engine, you have come to the right place. US Boatworks has been remanfacturing Volvo-Penta, Mercruiser and OMC Sterndrive Uppers for over 40 years. Our uppers stand out from the competition because we build them to last. We use genuine OEM parts and have certified mechanics in house that build your upper.Why should you choose a US Boatworks Rebuilt Upper?
- [Upper Units](https://boatengine.com/upper-units/): At US Boatworks, we've been replacing sterndrive upper units for over 40 years for Mercruiser, Volvo-Penta and OMC. Tell us your Serial # or Model # and we'll match you to the right unit fast.
- [Mercruiser Aftermarket Sterndrives](https://boatengine.com/mercruiser-aftermarket-sterndrives/): For Quality Rebuilt Sterndrives for Mercruiser, Volvo and OMC, Go Here
- [Mercruiser OEM Sterndrives](https://boatengine.com/mercruiser-oem-sterndrives/): OEM Sterndrives are a great option for boat owners needing to replace their existing unit. The OEM unit is the best choice for those that value performance and durability but the OEM choice will, of course, cost more.
- [Volvo OEM Sterndrives](https://boatengine.com/volvo-oem-sterndrives/): To ensure your adventures are always enjoyable, having reliable OEM equipment is key. Why you should choose the Volvo OEM Sterndrive -
- [OMC Remanufactured Sterndrive](https://boatengine.com/omc-remanufactured-sterndrive/): If you're into boating, you know how crucial a good sterndrive is. It's the powerhouse that keeps your boat moving smoothly across the water. So, when it's time to replace or upgrade, you want something reliable, efficient, and cost-effective. That's where OMC Remanufactured Sterndrives shine. Let's dive into why they could be the best pick for your boat.
- [Mercruiser Remanufactured Sterndrives](https://boatengine.com/mercruiser-remanufactured-sterndrives/): To ensure your boating adventures are always enjoyable, having reliable equipment is key.  Every Mercruiser remanufactured sterndrive is meticulously built by US Boatworks’ certified technicians. We follow strict OEM standards to ensure every component functions like new using only OEM quality parts. This commitment to quality means you can expect exceptional reliability and performance on the water.Why choose our Mercruiser Remanufactured Complete Sterndrive -
- [Volvo Remanufactured Sterndrives](https://boatengine.com/volvo-remanufactured-sterndrives/): To ensure get an excellent, reliable unit at the best price,check out our Remanufactured Volvo Units below.
- [OEM Sterndrive](https://boatengine.com/oem-sterndrive/): If you are looking for OEM Sterndrive of Mercury, Evinrude-Johnson, Force, Mercruiser, Volvo-Penta, and OMC, you have come to the right place. At US Boatworks, we have been doing it for almost 40 years and have served thousands of clients till now.
- [Aftermarket Sterndrives](https://boatengine.com/aftermarket-sterndrives/): If you are looking for an Aftermarket Sterndrive for your Mercruiser engine, you have come to the right place. At US Boatworks, We have been helping boaters replace their outdrives for 40 years and have thousands of happy customers.
- [Remanufactured Sterndrives](https://boatengine.com/remanufactured-sterndrives/): If you are looking for Remanufactured Sterndrives for Mercruiser, Volvo-Penta, and OMC, you have come to the right place. At US Boatworks, we have been rebuilding outdrives for almost 40 years and have served thousands of boaters.
- [Sterndrives](https://boatengine.com/sterndrives/): At US Boatworks, we've been replacing sterndrives for over 40 years. Mercruiser, Volvo-Penta, OMC — we know every make, every model, and every failure point. Tell us your engine make, model, and year and we'll match you to the right unit fast.
- [OMC](https://boatengine.com/omc/): Unleash the Power of OMC Outboards and Conquer Every Wave
- [Volvo](https://boatengine.com/volvo/): Unleash the Power of Volvo-Penta Sterndrives and Conquer Every Wave
- [Mercruiser](https://boatengine.com/mercruiser/): Unleash the Power of Mercruiser Outboards and Conquer Every Wave
- [Mercury](https://boatengine.com/mercury/): Unleash the Power of Mercury Outboards and Conquer Every Wave
- [Force](https://boatengine.com/force/): Unleash the Power of Force Outboards and Conquer Every Wave
- [Johnson](https://boatengine.com/johnson/): Unleash the Power of Johnson Outboards and Conquer Every Wave
- [Evinrude](https://boatengine.com/evinrude/): Unleash the Power of Evinrude Outboards and Conquer Every Wave
- [No longer available OMC parts](https://boatengine.com/no-longer-available-omc-parts/): Our OMC NLA Parts inventory changes daily. If you see the part you need, do not delay in ordering as demand for these parts is high. This database in updated every two weeks. We encourage you to call or text us at 913-342-0011 if you do not see your part on the list.
- [No longer available Mariner Parts](https://boatengine.com/no-longer-available-mariner-parts/): Our Mariner NLA Parts inventory changes daily. If you see the part you need, do not delay in ordering as demand for these parts is high. This database in updated every two weeks. We encourage you to call or text us at 913-342-0011 if you do not see your part on the list.
- [No longer available Force Parts](https://boatengine.com/no-longer-available-force-parts/): Our Force NLA Parts inventory changes daily. If you see the part you need, do not delay in ordering as demand for these parts is high. This database in updated every two weeks. We encourage you to call or text us at 913-342-0011 if you do not see your part on the list.
- [No longer available Volvo Penta Parts](https://boatengine.com/no-longer-available-volvo-parts/): Our Volvo NLA Parts inventory changes daily. If you see the part you need, do not delay in ordering as demand for these parts is high. This database in updated every two weeks. We encourage you to call or text us at 913-342-0011 if you do not see your part on the list.
- [No longer available Mercruiser Parts](https://boatengine.com/no-longer-available-mercruiser-parts/): Our Mercruiser NLA Parts inventory changes daily. If you see the part you need, do not delay in ordering as demand for these parts is high. This database in updated every two weeks. We encourage you to call or text us at 913-342-0011 if you do not see your part on the list.
- [No longer available Johnson Parts](https://boatengine.com/no-longer-available-johnson-parts/): Our Johnson NLA Parts inventory changes daily. If you see the part you need, do not delay in ordering as demand for these parts is high. This database in updated every two weeks. We encourage you to call or text us at 913-342-0011 if you do not see your part on the list.

## Products
- [**DIODE – 0583898](https://boatengine.com/product/diode-0583898/)
- [LINK, Spark advance – 0330275](https://boatengine.com/product/link-spark-advance-0330275/)
- [*YOKE & CONNECTOR Assy – 0390023](https://boatengine.com/product/yoke-connector-assy-0390023/)
- [*LEAF VALVE – 0317739](https://boatengine.com/product/leaf-valve-0317739/)
- [CAGE, BEARING W/SEAL – 818070A1](https://boatengine.com/product/cage-bearing-w-seal-818070a1/)
- [INJECTOR, Fuel – 802632T](https://boatengine.com/product/injector-fuel-802632t/)
- [*STOP SWITCH Assy. | ALL Electric Start models – 0585236](https://boatengine.com/product/stop-switch-assy-all-electric-start-models-0585236/)
- [O-RING – 825478](https://boatengine.com/product/o-ring-825478/)
- [DIAPHRAGM – 809129M](https://boatengine.com/product/diaphragm-809129m/)
- [*HOUSING Assy, Propeller shaft – 0434294](https://boatengine.com/product/housing-assy-propeller-shaft-0434294/): This part replaces 0393747.
- [VERNA THERM – 0384719](https://boatengine.com/product/verna-therm-0384719/)
- [**COVER, Primer solenoid – 0341071](https://boatengine.com/product/cover-primer-solenoid-0341071/)
- [*FITTING – 0330272](https://boatengine.com/product/fitting-0330272/)
- [**SCREW, Anode – 0341219](https://boatengine.com/product/screw-anode-0341219/)
- [CARBURETOR Assy | (Not Shown.) – 0439932](https://boatengine.com/product/carburetor-assy-not-shown-0439932/)
- [*WASHER – 0330265](https://boatengine.com/product/washer-0330265/)
- [* PIN – 0350943](https://boatengine.com/product/pin-0350943/)
- [INLET NEEDLE AND SEAT ASSEMBLY | POWERHEAD ASSEMBLY – 7824](https://boatengine.com/product/inlet-needle-and-seat-assembly-powerhead-assembly-7824/)
- [GROMMET – 0350973](https://boatengine.com/product/grommet-0350973/)
- [Sliding sleeve – 3807613](https://boatengine.com/product/sliding-sleeve-3807613/)
- [SEAL, Manifold to carb – stbd – 0335404](https://boatengine.com/product/seal-manifold-to-carb-stbd-0335404/)
- [SEAL, Manifold to carb – port – 0335403](https://boatengine.com/product/seal-manifold-to-carb-port-0335403/)
- [*STATOR ASSEMBLY – 0584507](https://boatengine.com/product/stator-assembly-0584507/)
- [SENSOR ASSEMBLY – 0583387](https://boatengine.com/product/sensor-assembly-0583387/)
- [SEAL – 83983M](https://boatengine.com/product/seal-83983m/)
- [Gasket | Earlier prod. – 3852279](https://boatengine.com/product/gasket-earlier-prod-3852279/)
- [COUPLER, Driveshaft – 0313498](https://boatengine.com/product/coupler-driveshaft-0313498/)
- [SWITCH-PRESSURE – 8M0098207](https://boatengine.com/product/switch-pressure-8m0098207/)
- [SEAL KIT, Gear Housing – 816575A3](https://boatengine.com/product/seal-kit-gear-housing-816575a3/)
- [CONTINUITY KIT | (All Components Of This Kit Are Not Sold Seperately) – 99940A2](https://boatengine.com/product/continuity-kit-all-components-of-this-kit-are-not-sold-seperately-99940a2/)
- [BUSHING – 8165991](https://boatengine.com/product/bushing-8165991/): BUSHING - 8165991. This part replaces 816599.
- [SCREW KIT, Drain – 8M0058389](https://boatengine.com/product/screw-kit-drain-8m0058389/): This part replaces 14834A1.
- [O-RING | Component Of Drive Shaft Housing Seal Kit [26- 88397A 1] – 70937](https://boatengine.com/product/o-ring-component-of-drive-shaft-housing-seal-kit-26-88397a-1-70937/)
- [WASHER – 45810](https://boatengine.com/product/washer-45810/)
- [CROSS AND BEARING | (Coupling Yoke Has Three O-Rings) SN# D870000 & Up – 805536A2](https://boatengine.com/product/cross-and-bearing-coupling-yoke-has-three-o-rings-sn-d870000-up-805536a2/): This part replaces 805536A1.
- [SEAL KIT, Driveshaft Housing – 88397A1](https://boatengine.com/product/seal-kit-driveshaft-housing-88397a1/)
- [ADAPTOR PLATE ASSEMBLY, Upper – 820228A2](https://boatengine.com/product/adaptor-plate-assembly-upper-820228a2/): This part replaces 820228A1.
- [WATER PUMP KIT – FK1073](https://boatengine.com/product/water-pump-kit-fk1073/)
- [COVER, IGNITION COIL – 43542](https://boatengine.com/product/cover-ignition-coil-43542/)
- [***WASHER, Lock – 0301551](https://boatengine.com/product/washer-lock-0301551/)
- [SEAL, Impeller housing – 0309607](https://boatengine.com/product/seal-impeller-housing-0309607/)
- [THERMOSTAT KIT – 807252Q5](https://boatengine.com/product/thermostat-kit-807252q5/)
- [TEMPERATURE SWITCH – 0584728](https://boatengine.com/product/temperature-switch-0584728/)
- [MAIN SPRING – 0325496](https://boatengine.com/product/main-spring-0325496/)
- [RECTIFIER & REGULATOR ASSY. – 0585195](https://boatengine.com/product/rectifier-regulator-assy-0585195/)
- [NEEDLE VALVE ASSY., Slow speed adjustment – 0431634](https://boatengine.com/product/needle-valve-assy-slow-speed-adjustment-0431634/)
- [Sensor, oxygen – 3883724](https://boatengine.com/product/sensor-oxygen-3883724/)
- [BUSHING – 821207](https://boatengine.com/product/bushing-821207/)
- [*GASKET, Powerhead base – 0330621](https://boatengine.com/product/gasket-powerhead-base-0330621/): This part replaces 0324332.
- [GASKET | COMPONENT OF CARBURETOR REPAIR KIT [8M0044576] – 802699002](https://boatengine.com/product/gasket-component-of-carburetor-repair-kit-8m0044576-802699002/)

## Categories
- [Boating](https://boatengine.com/category/boatengine/)
- [Boating Tips](https://boatengine.com/category/boating-tips/)
- [Checklist](https://boatengine.com/category/checklist/)
- [FAQ](https://boatengine.com/category/faq/)
- [Gearcase Education](https://boatengine.com/category/gearcase-education/)
- [General](https://boatengine.com/category/general/)
- [How To](https://boatengine.com/category/how-to/)
- [Informative](https://boatengine.com/category/informative/)
- [Launch](https://boatengine.com/category/launch/)
- [Lower Units](https://boatengine.com/category/lowerunits/)
- [News and Reviews](https://boatengine.com/category/reviews-and-news/)
- [Notice](https://boatengine.com/category/notice/)
- [Offers](https://boatengine.com/category/offers/)
- [Promotions, Sales, Coupons](https://boatengine.com/category/promotions/)
- [Tips](https://boatengine.com/category/tips/)

## Brands
- [Evinrude](https://boatengine.com/brand/evinrude/)
- [Evinrude Johnson](https://boatengine.com/brand/evinrude-johnson/)
- [Force](https://boatengine.com/brand/force/)
- [Mercruiser](https://boatengine.com/brand/mercruiser/)
- [Mercury Marine](https://boatengine.com/brand/mercury-marine/)
- [OMC](https://boatengine.com/brand/omc/)
- [SEI](https://boatengine.com/brand/sei/)
- [Volvo](https://boatengine.com/brand/volvo/)
- [Volvo Penta](https://boatengine.com/brand/volvo-penta/)

## Product categories
- [Boat Parts](https://boatengine.com/product-category/boat-parts/)
- [Lower Units](https://boatengine.com/product-category/lower-units/)
- [Rebuilt](https://boatengine.com/product-category/lower-units/rebuilt/)
- [Mercury](https://boatengine.com/product-category/lower-units/rebuilt/mercury/)
- [Evinrude/Johnson](https://boatengine.com/product-category/lower-units/rebuilt/evinrude-johnson/)
- [Force](https://boatengine.com/product-category/lower-units/rebuilt/force/)
- [Volvo Gearcase](https://boatengine.com/product-category/lower-units/rebuilt/volvo-penta/)
- [Mercruiser](https://boatengine.com/product-category/lower-units/rebuilt/mercruiser/)
- [OMC Gearcase](https://boatengine.com/product-category/lower-units/rebuilt/omc-gearcase/)
- [Aftermarket](https://boatengine.com/product-category/lower-units/aftermarket/)
- [Mercruiser Aftermarket](https://boatengine.com/product-category/lower-units/aftermarket/mercruiser-aftermarket/)
- [OMC Aftermarket](https://boatengine.com/product-category/lower-units/aftermarket/omc-aftermarket/)
- [Evinrude Aftermarket](https://boatengine.com/product-category/lower-units/aftermarket/evinrude-aftermarket/)
- [Mercury Aftermarket](https://boatengine.com/product-category/lower-units/aftermarket/mercury-aftermarket/)
- [New OEM Lowers / Outdrives](https://boatengine.com/product-category/lower-units/new-oem-lowers-outdrives/)
- [Mercruiser New OEM Lowers Outdrives](https://boatengine.com/product-category/lower-units/new-oem-lowers-outdrives/mercruiser-new-oem-lowers-outdrives/)
- [Mercury New Oem](https://boatengine.com/product-category/lower-units/new-oem-lowers-outdrives/mercury-new-oem/)
- [Volvo New OEM Outdrives](https://boatengine.com/product-category/lower-units/new-oem-lowers-outdrives/volvo-new-oem-outdrives/)
- [Motors](https://boatengine.com/product-category/motors/)
- [Accessories](https://boatengine.com/product-category/accessories/)