420950840 Water Pump Housing Gasket for Sea-Doo LTD 21-230 1630 2024-2025

Water Pump Housing Gasket for Sea-Doo

This water pump housing gasket seals the housing to the engine block on select Sea-Doo 1630-powered models, replacing OEM part number 420950840.

Overview

This water pump housing gasket for Sea-Doo is a direct-fit sealing component for the 1630 engine family. The gasket for Sea-Doo keeps coolant where it belongs at the pump housing mating surface, helping prevent leaks and maintaining consistent cooling during rides. It is intended for riders and mechanics servicing the 2024-2025 LTD 21-230 1630.

Built For Performance

• Precision-cut to match the water pump housing and block mating surfaces on the 1630 engine
• Cross-references OEM part number 420950840 for straightforward replacement
• Seals the pump housing joint against coolant seepage under pressure
• Fits the LTD 21-230 1630 platform from model years 2024 through 2025
• Lightweight and simple to install during pump or cooling system service

Fits These Machines

• for Sea-Doo LTD 21-230 1630 (2024-2025)

On-The-Job Use

• Water pump housing reseals during impeller or pump service
• Cooling system repairs after a leak is traced to the housing joint
• Routine maintenance on the 1630 engine during the riding season
• Rebuilds where the pump housing is removed and the gasket must be replaced

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No. It is an aftermarket water pump housing gasket made for Sea-Doo applications and cross-referenced to OEM number 420950840; it is not an original brand product.

Q: Should the gasket be replaced every time the housing is removed? A: Yes. A gasket that has been compressed and exposed to coolant should be replaced whenever the housing is taken off to help ensure a clean seal.

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