420950820 Valve Cover Gasket for Sea-Doo RXT 1503 2005-2006

Valve Cover Gasket for Sea-Doo

This valve cover gasket is a direct replacement seal for the 1503 engine used in the Sea-Doo RXT, cross-referencing OEM part number 420950820.

Overview

This valve cover gasket is a sealing component that fits between the valve cover and cylinder head on the Sea-Doo 1503 engine. It keeps oil contained within the top end and blocks dirt and moisture from entering the valvetrain area. This valve cover gasket suits riders performing routine top-end maintenance or chasing down oil weepage on their 2005 to 2006 Sea-Doo RXT.

Built For Performance

• Direct-fit replacement for OEM part number 420950820
• Constructed from oil-resistant gasket material for a durable seal
• Designed to match the valve cover mating surface of the 1503 engine
• Withstands the heat cycling typical of marine engine operation
• Helps prevent oil seepage and maintain proper crankcase sealing

Fits These Machines

• for Sea-Doo RXT 1503 (2005-2006)

On-The-Job Use

• Replacing a worn or leaking valve cover gasket during top-end service
• Routine engine maintenance on the 1503 powerplant
• Resealing the valve cover after inspection or adjustment
• Keeping the engine bay clean by stopping oil weepage

Specs At A Glance

Good To Know

Q: Does this gasket require sealant during install? A: Many valve cover gaskets install dry, but always follow the service manual for the 1503 engine to confirm whether sealant is specified at the corners or along the mating surface.

Q: How do I know if my valve cover gasket needs replacing? A: Common signs include oil weeping around the valve cover, a burning oil smell after running, or visible gasket degradation when the cover is removed.

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