Description
SIERRA MerCruiser 3.7L Timing Cover / Water Pump Gasket Set – 18-4380
Sierra 18-4380 is a timing cover and water-pump gasket set for MerCruiser 224 CID / 3.7L four-cylinder engines including 165, 170, 180, 190, 470, 485 and 488 model families.
- Gasket set services the timing/front-cover and related water-pump sealing joints on the MerCruiser 3.7L engine family.
- Cross-references MerCruiser 27-68714A6 / 27-68714A7, GLM 30300 and Mallory 9-61010.
- Inspect the front cover, water-pump surfaces and corrosion around coolant passages before installing new gaskets.
- Designed as a direct marine-service replacement where the listed Sierra/OEM reference is specified.
- Compare the original part number, dimensions and assembly configuration before installation.
Fitment for marine engine and drive service parts can vary by model, serial number, drive/gearcase, cooling configuration and prior OEM supersessions. Compare the original OEM number and physical configuration before installation, and follow the applicable manufacturer service procedure and torque specifications.
Specifications
- Manufacturer: Sierra
- Part Number: 18-4380
- Part Type: Timing cover and water-pump gasket set
- Application: MerCruiser 224 CID / 3.7L four-cylinder engines including 165, 170, 180, 190, 470, 485 and 488 model families.
- Engine Family: 224 CID / 3.7L
- Models: 165 / 170 / 180 / 190 / 470 / 485 / 488
Interchange / OEM References
- MerCruiser: 27-68714A6, 27-68714A7
- GLM: 30300
- Mallory: 9-61010

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