O-ring – 3850820

Maintain peak Volvo Penta performance with this factory-engineered O-ring. Designed for precision installation and built to handle demanding fresh and saltwater environments season after season.

Factory-built to exact Volvo Penta specifications, this component ensures reliable operation across all engine conditions. Part number 3850820 is manufactured to exact Volvo Penta factory specifications for precision installation and optimal performance. Constructed from premium marine-grade materials engineered to withstand the harsh demands of both fresh and saltwater environments.

Factory parts exist for a reason — they work. Part 3850820 undergoes rigorous Volvo Penta quality testing that aftermarket manufacturers skip. The result? Reliable performance season after season.

Compatible Volvo Penta Engines

FITS: Volvo Penta Engines – Universal Compatibility

• Fits 172 Volvo Penta engine models across gasoline and diesel lineups
• Compatible with V6, V8, 3.0L-8.1L gas engines, D-series diesels, AQ, DP, DPX, and specialty models
• OEM genuine Volvo Penta part – verified universal fitment

⚠️ Important: This is a universal Volvo Penta component with broad compatibility across the entire product line. Use our parts finder tool to confirm it fits your specific engine model, or call our parts experts at 913-342-0011 for verification before ordering.

⚠️ Fitment Notice: Always verify compatibility using your engine serial number before ordering. Call us — our parts experts are happy to confirm fit before you buy.

Don’t know where your model and serial number is? Our quick reference guide shows exactly where to find it on Volvo Penta engines.

Verification & Support

Want to verify compatibility for part 3850820? Use our parts finder tool for instant confirmation. Still have questions? No problem – use the contact buttons at the bottom of this page to reach us by text, call, or email.

40+ years of marine expertise. Discount pricing on OEM Volvo Penta parts with fast shipping options.