Lower Unit Oil Seal & O-ring 320862 305123 306394 311598 OMC Cobra 4-CYL V6 & V8

Lower Unit Oil Seal & O-ring for OMC Cobra

This lower unit oil seal and O-ring set for OMC Cobra fits 4-cylinder, V6, and V8 models, with OEM cross-reference numbers 320862, 305123, 306394, and 311598.

Overview

This lower unit oil seal and O-ring set for OMC Cobra is a complete replacement kit for preventing oil leaks and water intrusion in the lower unit. It includes the essential seals and O-rings needed for a thorough gearcase service, matching original equipment specifications. Ideal for maintaining the integrity of OMC Cobra stern drive and outboard lower units.

Built For Performance

• OEM cross-reference numbers 320862, 305123, 306394, 311598 for compatibility
• Oil seal constructed from durable rubber compound for long-lasting performance
• O-ring provides a reliable seal against water and oil
• Designed for OMC Cobra 4-cylinder, V6, and V8 lower units

Fits These Machines

• for OMC Cobra 4-cylinder
• for OMC Cobra V6
• for OMC Cobra V8

On-The-Job Use

• Replacing worn lower unit oil seals during gearcase service
• Preventing oil leaks from the driveshaft and shift shaft
• Maintaining proper lubrication in the lower unit
• Used in marine repair shops and DIY maintenance

Specs At A Glance

Good To Know

Q: Are these seals original OMC parts? A: No, these are aftermarket replacement seals designed to match OMC specifications.

Q: What is the difference between a seal and an O-ring? A: The oil seal is a lip seal that fits around a rotating shaft, while the O-ring is a static seal used in grooves to prevent leakage.

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