420850500 Oil Filter Cover O-Ring for Sea-Doo GTX STD HO 1503 2019

Oil Filter Cover O-Ring for Sea-Doo

The Oil Filter Cover O-Ring for Sea-Doo seals the oil filter housing cover on the Rotax 1503 engine, cross-referencing OEM part number 420850500 to keep oil contained under pressure.

Overview

This Oil Filter Cover O-Ring for Sea-Doo is a direct-seal replacement that sits between the oil filter cover and housing on the 1503 engine. The Oil Filter Cover O-Ring prevents leaks at the cover mating surface so oil pressure stays consistent during operation. It suits riders performing routine oil changes or resealing a weeping cover on their personal watercraft.

Built For Performance

• Cross-references OEM part number 420850500 for straightforward lookup
• Fits the Rotax 1503 engine oil filter cover assembly
• Seals the cover-to-housing joint against oil seepage
• Withstands the heat and pressure of a running 1503 engine
• Compact ring profile matches the cover groove for a flush fit

Fits These Machines

• for Sea-Doo GTX STD HO 1503, 2019
• for Sea-Doo GTX STD NA 1503, 2019
• for Sea-Doo GTX STD NA 1503, 2007

On-The-Job Use

• Routine oil filter changes on the Rotax 1503 engine
• Resealing a cover that weeps oil at the housing joint
• Preventive maintenance before a riding season
• Shop and DIY service on personal watercraft

Specs At A Glance

Good To Know

Q: Should this O-ring be replaced at every oil change? A: Many riders replace the O-ring whenever the oil filter cover is removed to avoid reusing a compressed seal. Fresh sealing helps prevent drips after reassembly.

Q: Does this O-ring fit both naturally aspirated and supercharged 1503 engines? A: It is listed for the 1503 oil filter cover application shown, covering the HO and naturally aspirated variants in the title. Confirm your specific model and cover before ordering.

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