420950840 Water Pump Housing Gasket for Sea-Doo RXT X 300 1630 2016-2023

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket seals the housing to the engine block on 1630cc Sea-Doo RXT X 300 models and matches OEM reference 420950840.

Overview

The water pump housing gasket for Sea-Doo keeps coolant contained where the pump housing meets the engine. This replacement gasket for Sea-Doo restores a tight seal on 2016 to 2023 RXT X 300 1630 machines. It suits riders and techs handling routine cooling system service.

Built For Performance

• Direct fit for the 1630cc water pump housing
• Cross-references OEM part number 420950840
• Seals coolant passages against leaks under pressure
• Constructed for marine cooling system conditions
• Sold as a single replacement gasket

Fits These Machines

• for Sea-Doo RXT X 300 1630, 2016-2023

On-The-Job Use

• Water pump housing reassembly after service
• Cooling system seal replacement
• Routine maintenance on 1630cc RXT X 300 models

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: It is an aftermarket replacement gasket that cross-references OEM number 420950840, made for Sea-Doo machines. It installs in the same location as the factory piece.

Q: Should the housing be cleaned before installing a new gasket? A: Yes, remove old gasket residue and inspect the mating surfaces so the new gasket seats evenly. A clean surface helps prevent coolant seepage.

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