420950840 Water Pump Housing Gasket for Sea-Doo GTX P STD 155 1503 2018

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the pump housing to keep coolant flowing without leaks on 1503 engine equipped models, matching OEM reference 420950840.

Overview

This water pump housing gasket for Sea-Doo is a direct-fit sealing component for the cooling system on personal watercraft. It creates a tight seal between the pump housing and engine block so coolant moves efficiently through the system. Ideal for riders performing routine maintenance or replacing a worn gasket on a 2018 GTX P STD 155.

Built For Performance

• Precision-cut to match OEM 420950840 dimensions
• Constructed from coolant-resistant gasket material
• Seals the water pump housing face to prevent leaks
• Withstands heat cycling from repeated engine operation
• Direct replacement for the original housing gasket

Fits These Machines

• for Sea-Doo GTX P STD 155 1503 (2018)

On-The-Job Use

• Routine cooling system maintenance
• Water pump housing reassembly after service
• Leak repair on the pump housing mating surface

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket replacement gasket built to match OEM reference 420950840. It is designed as a direct-fit alternative for the specified application.

Q: Should I replace other gaskets at the same time? A: It is good practice to inspect related cooling system seals whenever the pump housing is apart. Replacing worn gaskets together can save repeat labor.

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