420950840 Water Pump Housing Gasket for Sea-Doo Islandia SE 215 1503 2009

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket for Sea-Doo seals the pump housing to the engine case on 1503 equipped models, built to OEM reference 420950840 to help prevent coolant loss at the joint.

Overview

This water pump housing gasket for Sea-Doo provides a tight seal at the pump housing mating surface, an area prone to weeping once the original gasket ages. The gasket for Sea-Doo 1503 engines is cut to match the housing footprint and compresses evenly during torquing. It is intended for owners and technicians servicing the Islandia SE 215 cooling circuit.

Built For Performance

• OEM cross-reference 420950840 for easy parts verification
• Die-cut profile aligns with the 1503 water pump housing flange
• Sealing material compresses to fill minor machining marks
• Withstands repeated heat cycles and coolant contact
• Consistent thickness for even clamp load around the bolt pattern

Fits These Machines

• for Sea-Doo Islandia SE 215 1503, 2009

On-The-Job Use

• Cooling system reseal during water pump service
• Reassembly following housing or impeller inspection
• Repair of coolant seepage at the housing joint
• Scheduled maintenance on 1503 powered watercraft

Specs At A Glance

Good To Know

Q: Does this gasket require any trimming before installation? A: No, it is cut to match the pump housing face and should install as-is. Trimming can compromise the seal and lead to leaks.

Q: How tight should the housing bolts be torqued? A: Use the torque figure listed in the service manual for your 1503 engine, tightening in a crossing pattern. Overtightening can distort the housing and crush the gasket.

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