420950840 Water Pump Housing Gasket for Sea-Doo Challenger S 155 1503 2012

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket seals the pump housing on Sea-Doo 1503 engines, helping prevent coolant leaks at the housing joint and keeping the cooling system pressurized.

Overview

The water pump housing gasket is a sealing component that fits between the pump housing and the engine case on Sea-Doo 1503 powered watercraft. This water pump housing gasket helps maintain a tight seal so coolant flows correctly through the engine instead of escaping at the housing surface. It suits owners servicing or rebuilding the cooling system on their Sea-Doo personal watercraft.

Built For Performance

• Direct replacement for OEM part number 420950840
• Seals the joint between the water pump housing and engine case
• Constructed to withstand hot coolant and constant circulation
• Helps prevent coolant loss that can lead to overheating
• Sold individually for straightforward replacement

Fits These Machines

• for Sea-Doo Challenger S
• for Sea-Doo models equipped with the 1503 engine

On-The-Job Use

• Cooling system service and water pump rebuilds
• Leak repair at the pump housing joint
• Routine maintenance on 1503 powered Sea-Doo watercraft
• Engine reassembly after pump or housing removal

Specs At A Glance

Good To Know

Q: Does this gasket fit my Sea-Doo? A: It is listed for the 1503 engine and the Challenger S, so confirm your model and engine before ordering. Q: Should I replace it during a pump service? A: A fresh gasket at the housing joint is standard practice whenever the pump 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.