420950840 Water Pump Housing Gasket for Sea-Doo GTI P SE 155 1503 2018

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the housing on 1503-powered GTI P SE 155 models, carrying an OEM cross-reference of 420950840.

Overview

The water pump housing gasket for Sea-Doo is a sealing component made for the 1503 engine used in GTI P SE 155 craft. It seals the pump housing to the engine case, keeping the cooling circuit tight. This gasket suits riders and technicians servicing 2018 GTI P SE 155 machines.

Built For Performance

• Cut to match the OEM 420950840 gasket profile
• Built for the 1503 four-stroke engine platform
• Seals the housing joint against coolant loss
• Handles the thermal cycling of marine engines
• Straight replacement for the factory housing gasket

Fits These Machines

• for Sea-Doo GTI P SE 155 1503, 2018

On-The-Job Use

• Cooling system service on 1503-powered GTI P SE 155 craft
• Water pump removal and reinstallation
• Impeller and wear ring maintenance jobs
• Seasonal upkeep in personal watercraft workshops

Specs At A Glance

Good To Know

Q: Is this gasket reusable after the housing is removed? A: No, it is a single-use sealing item and should be replaced each time the housing comes off. A fresh gasket prevents coolant leaks at the joint.

Q: Will this fit a 2018 GTI P SE 155 with the 1503 engine? A: It is listed specifically for that model and year. Verify your housing part number matches 420950840 before ordering.

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