420811851 Oil Pump Cover Plate for Sea-Doo Fish 18-230 1630 2025-2026

Oil Pump Cover Plate for Sea-Doo

This oil pump cover plate replaces OEM part 420811851 on 2025-2026 Sea-Doo Fish 18-230 1630 models, sealing and protecting the oil pump assembly so lubrication stays where it belongs.

Overview

This oil pump cover plate is a direct-fit replacement for OEM 420811851 on Sea-Doo Fish 18-230 1630 watercraft from 2025-2026. The plate seals the oil pump housing, keeping lubricant contained and shielding internal components from water and debris intrusion. It suits riders performing routine maintenance or replacing a worn, cracked, or leaking cover.

Built For Performance

• Direct replacement for OEM part number 420811851
• Seals the oil pump housing to prevent lubricant leaks
• Protects internal pump components from water and debris
• Durable construction suited to marine engine bay conditions
• Bolt-on fitment for straightforward installation

Fits These Machines

• for Sea-Doo Fish 18-230 1630, 2025-2026

On-The-Job Use

• Routine oil pump maintenance and rebuilds
• Replacing a leaking or damaged factory cover plate
• Engine reassembly after oil pump service
• Marine engine bay repairs 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 built to replace OEM part 420811851. It is not manufactured or endorsed by Sea-Doo.

Q: How do I confirm it fits my watercraft? A: Compare the part number 420811851 and your model and year against the fitment list before ordering. Match the OEM number on your existing cover whenever possible.

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