Description
SIERRA Mercury / Mariner Lower Unit Seal Kit – 18-2653
Sierra 18-2653 is a Lower unit seal kit engineered for the specified marine application. Selected older Mercury/Mariner 75-225 HP gearcases, including 4-cylinder 75/80, 6-cylinder 90/115/140 and earlier V6 150/175/200/225 applications; confirm serial number and OEM 26-55682A1.
- Complete lower-unit/gear-housing seal kit for selected Mercury and Mariner outboards.
- Crosses to Mercury Marine 26-55682A1.
- Sierra application charts cover multiple 75-225 HP gearcase families and serial ranges.
- Intended for gearcase resealing when the lower unit is disassembled for bearing, shaft or water-in-oil service.
- Use the engine serial number and gearcase configuration to distinguish this kit from later 18-2655 applications.
For marine drive and engine service parts, fitment can vary by model, serial number, gear ratio, casting and prior service history. Compare the original OEM number and physical configuration before installation, and replace related seals, bearings, locking hardware, hoses or cable components when their condition requires it.
Specifications
- Manufacturer: Sierra
- Part Number: 18-2653
- Part Type: Lower unit seal kit
- Application: Selected older Mercury/Mariner 75-225 HP gearcases, including 4-cylinder 75/80, 6-cylinder 90/115/140 and earlier V6 150/175/200/225 applications; confirm serial number and OEM 26-55682A1.
- OEM Kit: 26-55682A1
Interchange / OEM References
- GLM: 87520
- Mallory: 9-74203
- Mercury Marine: 26-55682A1

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