420950820 Valve Cover Gasket for Sea-Doo Challenger Wake 310 1503 2008

Valve Cover Gasket for Sea-Doo

This valve cover gasket is a replacement sealing component for the 1503 engine, designed to prevent oil leaks at the valve cover mating surface and cross-referenced to OEM part number 420950820.

Overview

This valve cover gasket for Sea-Doo is a direct-fit sealing solution for the 1503 four-stroke engine. The valve cover gasket keeps oil contained at the cylinder head cover mating surface, protecting the engine bay from leaks and maintaining proper oil pressure. It is intended for owners and mechanics servicing personal watercraft and jet boats that run the 1503 powerplant.

Built For Performance

• Precision-cut to match the valve cover mating surface of the 1503 engine
• Constructed from oil-resistant sealing material for long service life
• Cross-referenced to OEM part number 420950820 for easy verification
• Flexible construction conforms to minor surface irregularities for a tight seal
• Resists heat cycling common to marine four-stroke engines

Fits These Machines

• for Sea-Doo Challenger Wake 310 with 1503 engine, 2008
• for Sea-Doo Challenger Wake 430 with 1503 engine, 2008

On-The-Job Use

• Valve cover resealing during top-end service or rebuild
• Leak repair at the cylinder head cover on 1503 engines
• Routine maintenance on personal watercraft and jet boats
• Preventive replacement when the original gasket hardens or seeps

Specs At A Glance

Good To Know

Q: Does this gasket fit both the Challenger Wake 310 and 430? A: Yes, this gasket is listed for both models equipped with the 1503 engine, as the valve cover sealing surface is the same on that powerplant.

Q: Should I replace the gasket every time the valve cover is removed? A: Yes, a fresh gasket is recommended each time the valve cover is taken off, since used gaskets can harden and lose their sealing ability.

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