420950820 Valve Cover Gasket for Sea-Doo Fish Compact 170 1630 2026

Valve Cover Gasket for Sea-Doo

This valve cover gasket is a direct replacement seal for the engine valve cover on select Sea-Doo personal watercraft, cross-referencing OEM part number 420950820 to help keep oil contained and the top end sealed.

Overview

This valve cover gasket seals the joint between the valve cover and cylinder head on select Sea-Doo watercraft. It prevents oil seepage and keeps contaminants out of the top end, making it a practical replacement for worn or leaking seals. A smart pick for riders maintaining their own Sea-Doo engine.

Built For Performance

• Direct replacement for OEM part number 420950820
• Precision-cut to match the valve cover mating surface
• Oil-resistant material resists heat and breakdown
• Compressible enough to seal minor surface imperfections
• Simple bolt-on installation with basic hand tools

Fits These Machines

• for Sea-Doo Fish Compact 170 1630 (2026)

On-The-Job Use

• Replacing a leaking valve cover gasket during top end service
• Routine maintenance on 1630 engine watercraft
• Sealing the top end after valve cover removal
• Preventing oil seepage on trailered or stored units

Specs At A Glance

Good To Know

Q: Does this gasket need sealant during install? A: Most valve cover gaskets install dry, though a thin bead of gasket sealer at corners may be used per your service manual. Always follow the manufacturer torque specs.

Q: How do I know if my valve cover gasket needs replacing? A: Look for oil weeping around the valve cover, a burning oil smell, or visible gasket cracking. A leaking gasket should be replaced before it causes oil loss.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.