Description
MerCruiser Alpha One Gen 2 Upper Unit – 1.65 Ratio #1547-861063A10| Fits Years 1991–2012
This remanufactured MerCruiser Alpha One Gen 2 Upper Unit is a replacement for Alpha I Gen II sterndrives from model years 1991 through 2012. Built to meet OEM standards, this 1.65 ratio upper unit is ideal for many high-thrust applications. It’s expertly rebuilt in the USA by certified marine mechanics using OEM parts, ensuring durability and factory-level performance.
Each unit is remanufactured involving disassembly, cleaning, inspection, and OEM part replacement.
If you’re want to further research the components of this 1547-861063A6 upper, check out our MerCruiser Alpha One upper unit diagram on our boat parts finder. Here you can view specific components of your Mercruiser engine then directly add needed replacement parts to your shopping cart.
This MerCruiser Alpha 1, Gen 2 upper offers OEM accuracy and dependable marine performance at a significantly reduced cost.
Don’t get stranded with sub-par units from other rebuilders. Get your quality US Boatworks reman upper unit today!
Fits
- System: MerCruiser Alpha One Gen II Sterndrives
- Model Years: 1991–2012
- Gear Ratio: 1.65
- OEM Part Number: 1547-861063A10
✅ Features & Benefits
- Fits MerCruiser Alpha One Gen II Sterndrive Upper Units
- Compatible with model years 1991 to 2012
- 1.65 Gear Ratio – optimal for specific gear/motor combinations
- OEM Part #: 1547-861063A10
- Remanufactured in the USA using OEM Parts
- Backed by a 1-Year Limited Warranty
- Qualifies for $200 core deposit refund on eligible returns
Pricing
Total 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*
- Return your old core, get up to $200 back.
- Refund amount will 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. 🛥️






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