420950840 Water Pump Housing Gasket for Sea-Doo RXT P X 300 1630 2018

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the pump housing against the engine on 1630cc models, and it is a direct replacement for OEM reference 420950840.

Overview

This water pump housing gasket for Sea-Doo is a sealing component that fits between the water pump housing and the engine case to hold coolant where it belongs. It is made for owners and technicians working on 2018 RXT P and X 300 models with the 1630 engine. Keeping a fresh water pump housing gasket in place during service protects the cooling system and helps the engine run at proper operating temperature.

Built For Performance

• Direct replacement for OEM reference 420950840
• Formed to match the housing mounting surface
• Seals coolant passages under pressure and heat
• Withstands constant coolant contact
• Fits 1630cc Sea-Doo engine applications
• Straightforward install during pump service

Fits These Machines

• for Sea-Doo RXT P 300 1630, 2018
• for Sea-Doo RXT X 300 1630, 2018

On-The-Job Use

• Water pump housing resealing
• Cooling system maintenance
• Impeller and wear ring service
• Post-overheat repair work

Specs At A Glance

Good To Know

Q: Does this gasket need sealant during installation? A: Most water pump housing gaskets install dry on a clean, flat surface, though some mechanics add a thin bead of gasket sealer at the housing edge for extra security.

Q: How often should a water pump housing gasket be replaced? A: Replace it any time the housing is removed, and inspect it for weeping or hardening if you notice coolant loss around the pump area.

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