420950820 Valve Cover Gasket for Sea-Doo Speedster 255 1503 2009-2011

Valve Cover Gasket for Sea-Doo

This valve cover gasket replaces OEM part 420950820 to seal the valve cover to the cylinder head and prevent oil leaks on 1503 engine applications.

Overview

This valve cover gasket is a direct-fit sealing component for the 1503 engine valve cover, keeping oil contained where the cover meets the cylinder head. It renews the seal on aging or hardened gaskets, helping prevent drips and oil loss. Ideal for owners performing routine top-end maintenance on their Sea-Doo watercraft.

Built For Performance

• Precision-cut to match the 1503 valve cover mating surface
• Oil-resistant material holds up to constant engine heat cycles
• Direct replacement for OEM part number 420950820
• Seals the valve cover to prevent oil seepage and loss
• Simple bolt-on fit with no modification required

Fits These Machines

• for Sea-Doo Speedster 255 with 1503 engine, 2009-2011

On-The-Job Use

• Routine valve cover resealing during top-end service
• Replacing a hardened or leaking factory gasket
• Maintenance after valve clearance inspection or adjustment
• Restoring a reliable oil seal on high-hour 1503 engines

Specs At A Glance

Good To Know

Q: Does this gasket fit other 1503 engines? A: It is listed for the 1503 valve cover application shown. Always confirm your engine code and part number before ordering.

Q: Should I replace both gaskets at once? A: Replacing the gasket whenever the valve cover is removed is good practice, since reusing a compressed gasket can lead to leaks.

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