420950820 Valve Cover Gasket for Sea-Doo Speedster 155 1503 2007-2011

Valve Cover Gasket for Sea-Doo Speedster 155 1503

This valve cover gasket (OEM cross-reference 420950820) seals the valve cover to the cylinder head on the 1503 engine used in the Sea-Doo Speedster 155, keeping oil contained and preventing leaks.

Overview

This valve cover gasket is a direct replacement seal for the 1503 engine found in the Sea-Doo Speedster 155. It creates a tight barrier between the valve cover and cylinder head to stop oil seepage and keep the top end clean. Built for owners servicing or rebuilding their Sea-Doo Speedster 155 1503, this gasket restores a reliable seal.

Built For Performance

• OEM cross-reference 420950820 for a precise fit
• Constructed from oil-resistant gasket material for long service life
• Pre-formed to match the valve cover and cylinder head mating surface
• Withstands the heat cycles of the 1503 engine
• Replaces a worn, hardened, or leaking factory gasket
• Sold as a single gasket for straightforward installation

Fits These Machines

• for Sea-Doo Speedster 155 with 1503 engine, 2007-2011

On-The-Job Use

• Routine top-end maintenance and reseal jobs
• Fixing oil leaks around the valve cover
• Engine rebuilds and gasket replacement
• Restoring a proper seal after valve cover removal

Specs At A Glance

Good To Know

Q: Does this gasket fit my 1503 engine? A: It is made to match the 1503 valve cover and cross-references OEM 420950820. Confirm your engine and model before ordering.

Q: Should I replace the gasket every time I remove the valve cover? A: Replacing the gasket whenever the valve cover is removed helps prevent oil leaks. A fresh seal is especially important on a reused, hardened gasket.

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