Mercruiser Upper Unit Alpha 1 Gen 2 #1547-861063A12

MerCruiser Alpha One Gen 2 Upper Unit – 1.50 Ratio #1547-861063A12 | Years 1991–2012

This high-quality remanufactured upper unit fits MerCruiser Alpha One Gen II Sterndrives, covering model years 1991 through 2012. Built with OEM parts and by certified marine mechanics in the USA, this 1.50 ratio upper unit (20/22 gear set) delivers factory-level performance at a fraction of the cost of new.

Our Alpha 1 Gen 2 sterndrive upper unit undergoes inspection, cleaning, part replacement, and precision building. It comes ready to install and is backed by a 1-Year Limited Warranty, ensuring peace of mind and reliability on the water.

This remanufactured Mercruiser Alpha 1, Gen 2 upper is perfect for boaters demanding high quality OEM products and price savings too. Save hundreds of dollars over new OEM prices. Ideal for smart boaters who demand OEM accuracy and long-term dependability.

View our parts finder to find Mercruiser Outboard parts diagrams to verify this is a match or contact us using the buttons at the bottom of the page.

You can also use our parts finder to find other Mercruiser Boat Parts for your Mercruiser engine.

Don’t get stranded with sub-par units from other rebuilders. Get your quality US Boatworks reman upper unit today!

Fits

• MerCruiser Alpha One Gen II Sterndrive Systems
• Model Years: 1991 through 2012
• Gear Ratio: 1.50 (20/22 tooth gear set)
• OEM Part Number: 1547-861063A12

✅ Features & Benefits

• Remanufactured in the USA by certified marine mechanics
• Uses only genuine Mercury Marine OEM parts
• 1-Year Limited Warranty included

Pricing

Price:  $1,695
Less $200 Potential Refundable Core Deposit*
👉 Final Price: $1,495

Product Finish

• Ships in gray primer finish
• For custom matching, your order includes factory spray paint to finish if desired

Core Deposit Information

• Refund amounts vary based on the condition of your core
• Please review our Core Policy for details on how to return your old core and claim your deposit
• ♻️ Recycle your core- keep boat parts out of the landfill

Need Help?

• 🔍 How to find your Boat Engine serial number
• Still deciding? Watch our YouTube video How avoid common lower unit replacement mistakes
• To help extend the life of your gearcase, watch out our Boat Maintenance Checklist

🛥️ Please have your Engine Serial # ready when you contact us if possible. 🛥️