420950840 Water Pump Housing Gasket for Sea-Doo RXP P XRS 300 1630 2018

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the pump housing on the 1630 engine, and it cross-references OEM part number 420950840.

Overview

This water pump housing gasket for Sea-Doo is a direct replacement seal for the 1630 engine used in the RXP, RXP-X, and RXP-XRS platforms. It seals the pump housing joint to keep coolant flowing where it should and prevent leaks under pressure. It suits owners and technicians servicing the 2018 300-horsepower models.

Built For Performance

• Direct-fit replacement for OEM part 420950840
• Seals the water pump housing joint under coolant pressure
• Built to withstand constant heat and coolant contact
• Matches stock fitment for the 1630 engine platform
• Installs at the pump housing mounting surface
• Sold individually for one housing installation

Fits These Machines

• for Sea-Doo RXP 300 1630 (2018)
• for Sea-Doo RXP-X 300 1630 (2018)
• for Sea-Doo RXP-XRS 300 1630 (2018)

On-The-Job Use

• Water pump housing reassembly after a rebuild
• Routine cooling system maintenance
• Coolant leak repair at the pump housing joint
• Seasonal service on the 1630 engine

Specs At A Glance

Good To Know

Q: Does this gasket fit my 2018 Sea-Doo RXP-X 300 1630? A: It is listed for the 2018 RXP, RXP-X, and RXP-XRS 300 with the 1630 engine, so verify your exact model and serial details before ordering. Q: How many gaskets come in one order? A: Each order includes one water pump housing gasket, matching the quantity needed for a single housing install.

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