420950840 Water Pump Housing Gasket for Sea-Doo GTR STD HO 1503 2019

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the housing to prevent coolant leaks on 1503 engine-equipped models, and it cross-references OEM part number 420950840.

Overview

This water pump housing gasket for Sea-Doo is a direct-fit sealing component for the 1503 engine platform. It creates a tight seal between the pump housing and engine block, preventing coolant from escaping under pressure. Ideal for riders and mechanics performing routine maintenance or a full rebuild on their personal watercraft.

Built For Performance

• Precision-cut to match the 420950840 OEM gasket profile
• Constructed from coolant-resistant gasket material
• Designed to withstand constant pressure and temperature cycling
• Provides a reliable seal at the water pump housing mating surface
• Direct replacement for the factory gasket on 1503 engines

Fits These Machines

• for Sea-Doo GTR STD HO 1503, 2019

On-The-Job Use

• Water pump housing resealing during routine maintenance
• Cooling system repair after a leak is detected at the housing
• Engine rebuilds where the pump housing is removed
• Preventive replacement when the existing gasket shows wear

Specs At A Glance

Good To Know

Q: Do I need to replace this gasket every time the housing is removed? A: Yes, gaskets are single-use sealing components and should be replaced any time the water pump housing is separated from the engine. Reusing an old gasket can lead to coolant leaks under pressure.

Q: Does this gasket require any sealant during installation? A: Installation practice varies, but many technicians install this gasket dry on a clean mating surface. Always follow the service manual for your specific model to ensure proper sealing.

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