420950840 Water Pump Housing Gasket for Sea-Doo Wake 255 1503 2009

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket seals the pump housing on 1503 engine applications, replacing OEM reference 420950840 to help keep coolant flowing where it belongs.

Overview

This water pump housing gasket is a direct-fit sealing component for the 1503 engine in the Sea-Doo Wake 255. The gasket sits between the pump housing and its mounting surface to prevent coolant leaks under pressure and temperature swings. Riders and mechanics servicing a Sea-Doo Wake 255 will find this gasket a practical replacement for worn or compressed seals.

Built For Performance

• Cross-references OEM part number 420950840 for straightforward replacement
• Precision-cut shape matches the pump housing mating surface for a tight seal
• Construction resists coolant exposure and repeated heat cycles
• Compresses evenly to help prevent weeping at the housing joint
• Sold as a single gasket for one housing installation

Fits These Machines

• for Sea-Doo Wake 255 with 1503 engine, 2009

On-The-Job Use

• Cooling system service on the 1503 engine
• Water pump housing removal and reinstallation
• Leak repair at the pump housing joint
• Routine maintenance before the riding season

Specs At A Glance

Good To Know

Q: Should the housing surface be cleaned before installing this gasket? A: Yes, remove old gasket material and any corrosion from both mating surfaces so the new gasket seats evenly and seals properly.

Q: Do I need to drain the cooling system first? A: Draining the coolant before removing the pump housing prevents spillage and keeps air from entering the system during the swap.

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