Gearcase Seal Kit for Mercury Mariner Force 8-25HP Lower Unit 26-85090A2 18-2624

Gearcase Seal Kit for Mercury Mariner Force

This gearcase seal kit is a replacement lower unit seal set for Mercury, Mariner, and Force outboard motors from 8 to 25 horsepower, cross-referenced with OEM numbers 26-85090A2 and 18-2624.

Overview

The gearcase seal kit for Mercury Mariner Force outboards provides all necessary seals for the lower unit gearcase on 8-25HP models. This seal kit includes O-rings, gaskets, and oil seals to prevent water ingress and maintain lubricant integrity. It is a direct OEM replacement, using cross-reference numbers 26-85090A2 and 18-2624 for compatibility.

Built For Performance

• Includes all seals required for a complete lower unit overhaul.
• Made from high-quality rubber and gasket materials for durability.
• Resistant to oil, fuel, and saltwater corrosion.
• Precision-fit to seal the driveshaft, propshaft, and shift shaft.
• Meets or exceeds OEM specifications for sealing performance.
• Cost-effective alternative to buying individual seals.

Fits These Machines

• for Mercury outboards 8-25HP
• for Mariner outboards 8-25HP
• for Force outboards 8-25HP

On-The-Job Use

• Replacing worn or leaking seals in the lower unit gearcase.
• Overhauling the outboard motor during a complete rebuild.
• Preventing water contamination and gear oil loss while on the water.
• Annual maintenance to extend the life of the lower unit.
• Use by marine mechanics and boat owners performing DIY service.

Specs At A Glance

Good To Know

Q: Does this seal kit fit a 15HP Mercury? A: Yes, it is designed for Mercury outboards 8-25HP, including the 15HP model.

Q: Are all seals included for a full lower unit reseal? A: Yes, the kit contains all O-rings, oil seals, and gaskets needed for the gearcase.

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