Lower Gearcase Seal with O-ring 26-161301 25-161311 For Mercury Marine 25HP 30HP

Lower Gearcase Seal with O-ring for Mercury Marine

This Lower Gearcase Seal with O-ring is a replacement sealing component for Mercury Marine outboard lower gearcases. The Lower Gearcase Seal with O-ring keeps gearcase oil contained and helps prevent water from entering the assembly. It is intended for 25HP and 30HP Mercury Marine outboards and references OEM part numbers 26-161301 and 25-161311.

Overview

This Lower Gearcase Seal with O-ring is designed to replace a worn seal and mating O-ring in the lower gearcase of compatible Mercury Marine outboards. This Lower Gearcase Seal with O-ring provides dependable sealing at the gearcase cover and is suited for routine service and repair. This replacement supports 25HP and 30HP Mercury Marine outboard models.

Built For Performance

• Includes the gearcase seal and matching O-ring for a complete seal point
• References OEM cross-reference numbers 26-161301 and 25-161311
• Construction suited for oil and marine water exposure
• Designed to fit Mercury Marine 25HP and 30HP lower gearcases
• Helps maintain gearcase pressure and lubricant retention

Fits These Machines

• for Mercury Marine 25HP outboard
• for Mercury Marine 30HP outboard

On-The-Job Use

• Replacing the lower gearcase seal during outboard maintenance
• Stopping leaks at the gearcase cover or seal bore
• Servicing Mercury Marine 25HP and 30HP outboard lower units
• Preventive reseal when changing gearcase oil

Specs At A Glance

Good To Know

Q: What does this Lower Gearcase Seal with O-ring do? A: It seals the gearcase bore to keep oil in and water out. Replace it when servicing or rebuilding the lower unit.

Q: How is fitment confirmed for this Lower Gearcase Seal with O-ring? A: Use the OEM part numbers 26-161301 and 25-161311 to cross-reference the original part. The outboard horsepower and serial number must be checked 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.