420431801 Valve Cover Gasket for Sea-Doo Spark 90 2up 3up 900 2021-2026

Valve Cover Gasket for Sea-Doo

This valve cover gasket, referenced as 420431801, seals the valve cover to the cylinder head to prevent oil leaks on your watercraft engine.

Overview

This valve cover gasket is a direct replacement seal designed to keep oil contained where the valve cover meets the cylinder head. A failing valve cover gasket lets oil seep onto hot engine surfaces, causing streaks, drips, and a mess in the hull. Replacing the valve cover gasket restores a clean, tight seal so your engine stays lubricated and running right.

Built For Performance

• Precision-cut to match the factory sealing surface
• Oil-resistant material suited to marine engine heat
• Direct replacement for OEM part number 420431801
• Helps stop oil weeping and drips at the valve cover
• Simple bolt-on fit with no modification required

Fits These Machines

• for Sea-Doo Spark 90 2up 900 (2021-2026)
• for Sea-Doo Spark 90 3up 900 (2021-2026)

On-The-Job Use

• Routine top-end maintenance on personal watercraft
• Resealing the valve cover after a valve adjustment
• Fixing oil leaks traced to the cylinder head area
• Seasonal engine refresh before hitting the water

Specs At A Glance

Good To Know

Q: Does this gasket require sealant during installation? A: Most valve cover gaskets install clean and dry, but always follow the service manual for your specific engine. A thin bead of appropriate sealant may be needed only where the manual specifies.

Q: How do I know if my valve cover gasket needs replacing? A: Common signs include oil residue around the valve cover, visible drips, or a burning oil smell after riding. If you spot any of these, inspect and replace the gasket.

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