420431801 Valve Cover Gasket for Sea-Doo GTI STD 90 900 2020-2022

Valve Cover Gasket for Sea-Doo

This valve cover gasket seals the valve cover to the cylinder head on 2020-2022 Sea-Doo GTI STD 90 900 watercraft, cross-referencing OEM part number 420431801.

Overview

This valve cover gasket for Sea-Doo is a direct-fit sealing component for the 900 ACE engine used in 2020-2022 GTI STD 90 models. The gasket creates a tight seal between the valve cover and cylinder head, keeping oil contained and preventing leaks under normal operating conditions. It is intended for riders performing routine top-end maintenance or replacing a worn, weeping gasket on their personal watercraft.

Built For Performance

• Precision-cut to match the 900 ACE valve cover mating surface
• Oil-resistant material formulated for marine engine heat cycles
• Cross-references OEM part number 420431801
• Seals against oil seepage at the valve cover to cylinder head joint
• Direct replacement fit for the specified 2020-2022 GTI STD 90 900 application

Fits These Machines

• for Sea-Doo GTI STD 90 900, 2020
• for Sea-Doo GTI STD 90 900, 2021
• for Sea-Doo GTI STD 90 900, 2022

On-The-Job Use

• Valve cover resealing during top-end service
• Routine engine maintenance on 900 ACE powered watercraft
• Replacing a weeping or hardened gasket after heat cycling

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is an aftermarket valve cover gasket made for Sea-Doo 900 ACE applications and cross-references OEM number 420431801. It is not an original brand product.

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 lifted to ensure a clean, leak-free seal. Reusing an old gasket can lead to oil seepage under heat and vibration.

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