420950840 Water Pump Housing Gasket for Sea-Doo Challenger SE 215 1503 2012

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket seals the joint between the pump housing and engine case on 1503-powered Sea-Doo watercraft, cross-referencing OEM part 420950840.

Overview

The water pump housing gasket for Sea-Doo is a direct-fit sealing component for the 1503 engine's cooling pump assembly. This water pump housing gasket prevents coolant leaks at the housing mating surface and keeps impeller flow steady under load. It suits riders and mechanics servicing a 2012 Challenger or SE jet boat.

Built For Performance

• Precision-cut to match the housing flange profile
• Resists coolant, heat, and pressure cycling
• Compresses evenly for a consistent seal
• Direct replacement for OEM 420950840
• Withstands repeated engine heat cycles

Fits These Machines

• for Sea-Doo Challenger 1503
• for Sea-Doo SE 1503
• for Sea-Doo 2012 model year 1503-equipped craft

On-The-Job Use

• Cooling system rebuilds
• Water pump housing resealing
• Routine impeller service
• Leak repair at the housing joint

Specs At A Glance

Good To Know

Q: Does this gasket fit my 2012 Sea-Doo? A: It is intended for 2012 Challenger and SE models with the 1503 engine. Verify your serial number before ordering.

Q: Should the housing surfaces be cleaned first? A: Yes, remove old gasket residue and inspect for flatness before installing. A clean surface helps the gasket seal properly.

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