Description
SIERRA MerCruiser / OMC / Volvo Heavy-Duty Universal Joint – 18-2174
Sierra 18-2174 is a heavy-duty greasable universal joint for later MerCruiser Alpha One, Alpha SS and Bravo driveline applications plus compatible OMC and Volvo Penta drives. It is associated with the later retaining-clip configuration and includes straight and 90-degree grease fittings.
- Heavy-duty greasable universal joint for later stern-drive driveline applications.
- Includes straight and 90-degree grease fittings for service access.
- Cataloged for Alpha One from serial B418819 and later, Alpha SS and Bravo.
- Also crosses to OMC 3850812/915717 and Volvo Penta 3850812 applications.
- Verify drive serial number and retaining-clip style because Sierra 18-2104 serves earlier configurations.
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 or cable components when their condition requires it.
Specifications
- Manufacturer: Sierra
- Part Number: 18-2174
- Application: MerCruiser Alpha One from serial B418819 and later, Alpha SS and Bravo applications, plus selected OMC/Volvo Penta stern drives using the listed OEM references.
- Part Type: Greasable universal joint
- MerCruiser Serial Break: B418819 and later for applicable Alpha One
- Application: Alpha SS / Bravo and selected OMC/Volvo drives
- Service Fittings: Straight and 90-degree
Interchange / OEM References
- GLM: 28030
- Mallory: 9-72405
- MerCruiser Stern Drive: 36312, 41431, 58749, 75832, 758321, 75832A1, 75832A2, 75832A3, 75832B, 75832B1, 75832B2, 75832B3, 75832T, 75832T1
- OMC: 3850812, 915717
- Volvo Penta: 3850812

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