420850500 Oil Filter Cover O-Ring for Sea-Doo Speedster 310 1503 2008

Oil Filter Cover O-Ring for Sea-Doo

This oil filter cover O-ring seals the oil filter housing on select Sea-Doo personal watercraft and sport boats, cross-referencing OEM part 420850500.

Overview

This oil filter cover O-ring is a direct-fit sealing component for the oil filter housing on select Sea-Doo watercraft. It prevents oil seepage at the cover mating surface and keeps the filter assembly sealed under normal operating pressure. A sensible replacement for riders servicing their own Sea-Doo oil filter cover.

Built For Performance

• OEM cross-reference 420850500 for accurate fitment matching
• Oil-resistant rubber construction suited to engine oil exposure
• Correct profile and thickness for a positive seal at the cover groove
• Withstands the heat cycling typical of marine engine oil systems
• Compact, low-cost part that prevents leaks and oil loss

Fits These Machines

• for Sea-Doo Speedster 310 with 1503 engine, 2008

On-The-Job Use

• Routine oil and filter service on Sea-Doo 1503 engines
• Replacing a hardened, flattened, or weeping cover O-ring
• Oil filter cover reassembly after housing inspection or cleaning

Specs At A Glance

Good To Know

Q: Why does the oil filter cover O-ring matter? A: A worn or flattened O-ring allows oil to seep past the cover, causing drips and potential oil loss. Replacing it during filter service restores a clean seal.

Q: Should the O-ring be replaced every oil change? A: Many riders replace it whenever the oil filter cover is opened, since the part is inexpensive and reusing a compressed O-ring risks leaks. Inspect for cracks or flattening before reuse.

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