Volvo Penta SX-M Upper Gearcase #3857007

Volvo Penta SX-M Upper Unit #3857007 – 1.43, 1.51, 1.60, 1.66, 1.85

This remanufactured Volvo Penta SX-M upper unit fits SX-M sterndrive models and supports multiple gear ratios: 1.43, 1.51, 1.60, 1.66, and 1.85. Built to OEM standards by certified marine mechanics in the USA, each upper unit is precision-rebuilt with genuine Volvo-Penta OEM parts for dependable performance.

If you’re searching for Volvo Penta SX-M 1.60 or any other gear ratio, this unit offers an affordable, high-quality solution for replacing the upper part of your sterndrive. Each Upper undergoes complete inspection and assembly with proper torque specs and alignment checks.

Ideal for boaters needing reliable performance, trusted craftsmanship, and budget-friendly alternatives to buying new.

Don’t get stranded by other sub-par units. Get your US Boatworks reman SX-M sterndrive upper unit today!

Fits

• Volvo Penta SX-M Sterndrives
• OEM Part Number: 3857007
• Gear Ratios Available: 1.43, 1.51, 1.60, 1.66, 1.85
• Compatible with engines as listed in Volvo Penta SX-M gearcase parts diagrams
• View our parts finder to find Volvo Penta SX-M parts diagrams to guarantee a match for your engine or contact us to verify your unit

✅ Features & Benefits

• Fits Volvo Penta SX-M 22/23 sterndrive uppers
• Compatible withgear ratios: 1.43, 1.51, 1.60, 1.66, 1.85
• OEM Part # 3857007
• Remanufactured in the USA by certified marine technicians
• Uses only OEM parts
• 1-Year Limited Warranty included
• Built to support SX Volvo Penta reliability and performance
• Compatible with popular Volvo-Penta SX-M outdrives

Pricing

Total Price: $3,595
Less $300 Potential Refundable Core Deposit
👉 Final Price: $3,295

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 $300 back.
• Refund amount may 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

Need Help?

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

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