420950840 Water Pump Housing Gasket for Sea-Doo GTX LTD 300 1630 2016-2024

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the housing to the engine block on the 1630 engine, meeting OEM cross-reference 420950840.

Overview

This water pump housing gasket for Sea-Doo is a direct-fit sealing component for the 1630 engine used in GTX LTD 300 models. The gasket creates a tight seal between the water pump housing and the engine, preventing coolant leaks and maintaining proper cooling system pressure. It is intended for riders and mechanics performing water pump service or rebuilding the cooling system on their personal watercraft.

Built For Performance

• Precision-cut to match the water pump housing mounting surface
• Seals coolant passages to prevent leaks under operating pressure
• Built from gasket material rated for marine cooling system temperatures
• Direct replacement for OEM part number 420950840
• Fits 1630 engine applications in GTX LTD 300 models from 2016 to 2024

Fits These Machines

• For Sea-Doo GTX LTD 300 1630, 2016-2024

On-The-Job Use

• Water pump housing resealing during cooling system repair
• Routine maintenance when the pump housing is removed
• Engine rebuilds requiring new sealing components
• Fixing coolant seepage at the pump housing mating surface

Specs At A Glance

Good To Know

Q: Does this gasket require sealant during installation? A: Most water pump housing gaskets install dry, but always check your service manual for the specific torque sequence and any sealant recommendation. Q: How often should the water pump housing gasket be replaced? A: Replace it any time the housing is removed or if you notice coolant weeping at the mating surface.

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