420950840 Water Pump Housing Gasket for Sea-Doo Explorer Pro 170 1630 2023-2026

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the housing to the engine block on 1630-powered models, cross-referenced to OEM part 420950840.

Overview

This water pump housing gasket for Sea-Doo is a direct-fit sealing component that sits between the pump housing and the engine case to prevent coolant leaks. It keeps the cooling circuit sealed under pressure so the 1630 engine maintains proper operating temperature. Built for riders and mechanics servicing Explorer Pro 170 water pump assemblies.

Built For Performance

• Precision-cut to match the housing mating surface
• Coolant-resistant material stands up to constant thermal cycling
• Compressible construction seals minor surface imperfections
• Cross-referenced to OEM part 420950840 for easy lookup
• Direct replacement for the original housing gasket
• Sold as a single gasket for one pump housing

On-The-Job Use

• Water pump housing reseal during cooling system service
• Impeller or wear ring replacement jobs
• Leak repair at the pump housing mating surface
• Routine maintenance on 1630-powered watercraft

Specs At A Glance

Good To Know

Q: Does this gasket need sealant during install? A: Most installs rely on a clean, dry mating surface, though a thin film of suitable gasket sealant can be used if the surface is slightly uneven. Follow your service manual for the specific procedure.

Q: Can I reuse this gasket after removing the housing? A: No, gaskets are single-use and should be replaced each time the housing is removed. Reusing a compressed gasket can lead to coolant leaks.

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