O Ring, Oil Pump Mercury 30-225 SportJet 90-120 J/E 311338 25-62705, 311338

Oil Pump O-Ring for Mercury

This oil pump O-ring, cross-referenced as 311338 and 25-62705, seals the oil pump on Mercury outboards and SportJet models from 30 to 225 horsepower. It fits Mercury 30-225 and SportJet 90-120 engines, ensuring a leak-free oil pump assembly.

Overview

This oil pump o-ring for Mercury is a direct replacement for worn or damaged seals, keeping oil pressure stable and preventing leaks. Designed for Mercury outboards and SportJet engines in the 30-225 horsepower range, it restores proper sealing in the oil pump. The O-ring matches OEM cross-reference numbers 311338 and 25-62705 for dependable fit.

Built For Performance

• Precision-molded to meet OEM dimensions for a secure seal
• Resists oil degradation and maintains flexibility under pressure
• Handles high operating temperatures typical of marine engines
• Ensures consistent oil flow to critical engine components
• Easy to install with standard hand tools

On-The-Job Use

• Replaces failed O-rings during oil pump servicing
• Used in routine maintenance of Mercury outboards and SportJet engines
• Prevents oil leaks that can lead to engine damage
• Commonly installed by boat mechanics during tune-ups

Specs At A Glance

Good To Know

Q: Will this O-ring fit my Mercury outboard? A: It is designed for Mercury engines in the 30-225 horsepower range, including SportJet models. Check your engine's serial number and compare with the cross-reference numbers listed.

Q: How do I know if my oil pump O-ring needs replacement? A: Look for oil leaks around the pump area or low oil pressure readings. Replacing the O-ring with this part resolves those common symptoms.

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