Sterndrive Upper Units
We Offer Three Upper Unit replacement choices
Remanufactured Upper Unit
- Priced at deep discounts to save you money
- These units are remanufactured by experts in our shop for the last 40+ years
- All parts are OEM
- Made in the USA Built new to manufacturer specifications
- Includes all internal parts & is fully compatible and interchangeable with OEM drives
- Usually ships in 24 hours
- 1-year warranty on all rebuilt Upper units.
- Better prices compared to OEM Upper Units
- Aftermarket units are manufactured overseas & imported to USA.
- All parts are Non-OEM
- Built new to manufacturer specifications
- Includes all internal parts & is fully compatible and interchangeable with OEM drives
- Usually ships in 24 hours
- 3 year, fault free warranty handled directly by the factory
- Factory, Brand New Outdrives, Upper Units and Uppers
- Built by your engine manufacturer
- All parts are OEM
- Includes all internal parts & is fully compatible and interchangeable with your engine
- Optional rebate when you return your old core.
- Usually ships in 24 hours.
- 1 year warranty covered by manufacturer
Boat Upper Units at US Boatworks
Your sterndrive upper unit is a precision component— and replacing it right matters.
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.
Most orders ship in 24 hours . 1-year warranty standard.
Insurance claim? Call us first — our owner handles
every claim personally.
Call or text: 913-342-0011
Becca BTrustindex verifies that the original source of the review is Google. These guys did a Pro job rebuilding my 50hp Merc during covid, when I needed a new motor, but none were available. I would recommend them 1000 times over. No BS, straight up, handshake job. Will work with you. Boat still runs like a champ! 👏👏✨️🔥🏆 Jorge VeraTrustindex verifies that the original source of the review is Google. Bill HolstTrustindex verifies that the original source of the review is Google. A great place to do business with very knowledgeable staff joe reynoldsTrustindex verifies that the original source of the review is Google. Only place in town to buy parts! Best place ever. Staff is awesome. Parts availability second to none. Don WinslowTrustindex verifies that the original source of the review is Google. Great people to work with Ron SmithTrustindex verifies that the original source of the review is Google. Very helpful and knowledgeable staff. Every time I’ve been there had nothing but a great experience and will definitely be back. Thanks to all you guys. Douglas HinesTrustindex verifies that the original source of the review is Google. Had an on going problem with over heating on my 150, XR2, for almost 3 years. Tried everything, still no resolution. Found out about US Boatworks on line. Drove down and within a 10 minute conversation with the guys was told two things that I had no idea was a problem. Bought a few parts, everything was in stock. These guys are "extreemly" knowledgeable to say the least. Told them if this fixes my issues I'd buy them all lunch. Guess I have to go back, I owe them lunch. tom elderTrustindex verifies that the original source of the review is Google. Parts and service department the best in the city. I don’t go anywhere else
Most Asked Questions
What's the difference between a remanufactured and aftermarket upper unit?
A remanufactured unit is your exact upper unit rebuilt to OEM specs using genuine OEM parts — best performance, longest life. Aftermarket is built new to OEM specs at a lower price point with aftermarket parts. Depending on your budget the aftermarket may be the choice for you if you don’t mind sacrificing quality.
Not sure which fits your situation? Call us and we’ll point you in the right direction.
Will this upper unit fit my sterndrive?
It will if we spec it correctly. Give us your engine make, model, year, and serial number and our factory-trained team confirms compatibility before you order. We don’t guess.
How fast will my order ship?
We try our best to ship your unit out in 24 hours. Some units may need to be built in house. If this is the case, we call you with an estimated shipping date. We prioritize getting these units out as quickly as possible. We will also send you a tracking number the moment it leaves our warehouse.
Does insurance cover an upper unit replacement?
Often yes — and most boaters don’t think to ask. Call us for help. Our owner handles every claim personally and works directly with your adjuster.
Can I install this myself?
Many of our customers are do-it-yourselfers and if your comfortable with install, by all means, do so. If you prefer not to install yourself, we can ship your unit directly to your boat shop so they can complete the install. We ship thousands of sterndrives directly to boat shops each year.