420811851 Oil Pump Cover Plate for Sea-Doo Fish 21-300 1630 2026

Oil Pump Cover Plate for Sea-Doo

This oil pump cover plate for Sea-Doo is a replacement engine component that seals and protects the oil pump assembly on Fish 21-300 1630 models; it cross-references OEM part number 420811851.

Overview

This oil pump cover plate for Sea-Doo is a direct-fit replacement that seals the oil pump housing and keeps lubrication flowing correctly through the engine. It is built to match the original mounting points and sealing surface for a clean install. It suits riders maintaining or rebuilding a 2026 Fish 21-300 1630 who want a dependable oil pump cover plate without paying original-brand pricing.

Built For Performance

• Precision-machined mounting surface for a proper seal
• Durable construction suited to marine engine conditions
• Direct replacement for OEM part number 420811851
• Correct bolt pattern for straightforward installation
• Resists corrosion in wet engine environments

Fits These Machines

• for Sea-Doo Fish 21-300 1630, 2026

On-The-Job Use

• Oil pump service and resealing
• Engine rebuild and repair projects
• Routine maintenance on personal watercraft

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket oil pump cover plate designed to fit Sea-Doo applications and cross-references OEM number 420811851. A: Confirm your model and serial number before ordering to be sure of fit.

Q: Does it come with mounting hardware? A: Review the listing details for what is included, and reuse or replace fasteners as your service manual recommends.

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