420950840 Water Pump Housing Gasket for Sea-Doo GTI STD 1503 2006 2019

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the pump housing to prevent coolant leaks, and it is made to replace OEM part number 420950840.

Overview

This water pump housing gasket for Sea-Doo is a sealing component that sits between the pump housing and the engine case to keep coolant contained. The gasket for Sea-Doo is a direct replacement for worn or leaking seals on the 1503 engine. It suits riders performing routine maintenance or rebuilding a cooling system.

Built For Performance

• Direct replacement for OEM part number 420950840
• Precision-cut to match the housing mating surface
• Coolant-resistant material for long-term sealing
• Designed for the 1503 engine platform
• Withstands the heat cycles of marine cooling systems

Fits These Machines

• for Sea-Doo GTI STD 1503 (2006)
• for Sea-Doo GTI STD 1503 (2019)

On-The-Job Use

• Water pump housing resealing during rebuilds
• Coolant leak repair on the 1503 engine
• Routine cooling system maintenance
• Impeller and pump service jobs

Specs At A Glance

Good To Know

Q: Does this gasket require sealant during installation? A: A dry fit is usually enough, but many installers apply a thin film of gasket sealant for extra security. Always clean both mating surfaces before assembly.

Q: How do I know if my water pump housing gasket needs replacing? A: Signs include coolant weeping around the housing, overheating, or visible damage to the old gasket. Replace it any time the housing is removed.

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