Description
Mercury Outboard Lower Unit I-4, 100-125 HP, 6 DOG, 1667-9011J6
9011J6 mercury lower unit 6 Dog Rev is a perfect fit for I-4 Mercury outboards with 100 to 125 horsepower, model years 1987 and newer, and features a 6-dog reverse clutch system. Designed to replace OEM part #1667-9011J6, this unit is carefully rebuilt in the USA by certified marine mechanics using OEM parts and components.
It’s an ideal solution for boaters looking to replace a damaged lower unit, restore performance, or extend the life of their Mercury Outboard. Each unit is tested for durability and built to match or exceed original factory specs.
View our parts finder to find Mercury 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 Mercury Boat Parts for your Mercury V6 Outboard.
Don’t get stranded with sub-par units from other rebuilders. Get your quality US Boatworks reman lower unit today!
Benefits of Our Remanufactured Lower Units
✅ 1-Year Warranty
✅ Remanufactured by Certified Mechanics in the USA
✅ OEM Parts
✅ Significant $ Savings
Pricing
Total Price: $2,195
Less $300 Potential Refundable Core Deposit
👉 Final Price: $1,895
Product Finish
- Gearcases come in gray primer
- Includes a can of factory spray paint for final finishing, if desired
Core Deposit Information
- Return your old core, get up to $300 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 & receive $ back
Useful Resources
- How to find your Boat Engine serial number
- Still deciding? Watch our YouTube video on “How to avoid common lower unit replacement mistakes“
- To help extend the life of your gearcase, check out our Boat Maintenance Checklist
US Boatworks: Quality Remanufacturing for over 40 years
🛥️ Please have your Engine Serial # ready when you contact us if possible. 🛥️






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