420431801 Valve Cover Gasket for Sea-Doo GTI P SE 90 900 2018

Valve Cover Gasket for Sea-Doo

This valve cover gasket replaces the OEM sealing ring on the valve cover of the Rotax 900 ACE engine, cross-referencing part number 420431801 to keep oil sealed at the top end.

Overview

This valve cover gasket for Sea-Doo keeps the valve cover sealed to the cylinder head on 900 series engines. The gasket for Sea-Doo personal watercraft helps prevent oil seepage and keeps the top end of the engine clean and tight. It is a direct-fit replacement for riders maintaining their own machines.

Built For Performance

• Direct replacement for OEM part number 420431801
• Seals the valve cover to the cylinder head to stop oil seepage
• Fits 900 ACE three-cylinder engine architecture
• Flexible gasket material holds its shape during installation
• Withstands the heat cycling of marine engine operation

Fits These Machines

• for Sea-Doo GTI 90
• for Sea-Doo GTI SE 90
• for Sea-Doo GTI P 90
• for Sea-Doo GTI 900
• for Sea-Doo GTI SE 900
• for Sea-Doo GTI P 900

On-The-Job Use

• Valve cover resealing during top-end engine service
• Routine maintenance on 900 ACE engines
• Leak repair after oil weeps from the valve cover seam
• Rebuild projects where the valve cover is removed

Specs At A Glance

Good To Know

Q: Does this gasket need sealant during installation? A: Most valve cover gaskets install dry, but checking your service manual for the 900 ACE engine confirms whether any sealant is specified at corners.

Q: How often should a valve cover gasket be replaced? A: Replace it any time the valve cover is removed or when oil seepage appears at the cover seam, since gaskets compress and harden over time.

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