420950820 Valve Cover Gasket for Sea-Doo RXP P X 300 1630 2018

Valve Cover Gasket for Sea-Doo

The Valve Cover Gasket, reference 420950820, seals the valve cover to the cylinder head for Sea-Doo RXP P X 300 1630 models, keeping oil where it belongs.

Overview

This Valve Cover Gasket for Sea-Doo is the sealing layer that sits between the valve cover and the cylinder head on the 1630 engine. It holds back oil splash and keeps contaminants out of the top end so the valve train stays lubricated. Built for riders servicing their own 2018 Sea-Doo RXP P X 300 1630, this gasket for Sea-Doo delivers a direct-fit seal without guesswork.

Built For Performance

• Direct-fit replacement for OEM gasket 420950820
• Constructed from oil-resistant sealing material
• Holds a tight seal across the valve cover mating surface
• Stands up to the heat cycles of a marine four-stroke engine
• Replaces a hardened, leaking, or flattened factory gasket

Fits These Machines

• for Sea-Doo RXP P X 300 1630, 2018

On-The-Job Use

• Valve cover resealing after a top end rebuild
• Fixing oil weeping around the cover on a used ski
• Routine maintenance before the riding season
• Post-storage service on a ski that sat over winter

Specs At A Glance

Good To Know

Q: Do I need sealant with this gasket? A: Sealing characteristics vary, so follow the service manual procedure for your specific engine. Dry installation is typical when the mating surfaces are clean and flat.

Q: How often should a valve cover gasket be replaced? A: Replace it whenever the cover is removed or when oil weeping appears at the mating surface. Reusing a compressed gasket often leads 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.