SIERRA OMC 3.0L 140 HP Overhaul Gasket Set, 1973-1988 – 18-4374

Description

SIERRA OMC 3.0L 140 HP Overhaul Gasket Set, 1973-1988 – 18-4374

Sierra 18-4374 is a engine overhaul gasket set for OMC 140 HP / GM 3.0L marine engines in cataloged 1973-1988 applications.

• Overhaul gasket set intended for major engine resealing during rebuild service.
• Cross-references GLM 39820 and Mallory 9-61100.
• Confirm engine year, casting family and accessory configuration before teardown; overhaul sets can differ in included seals and ancillary 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: 18-4374
• Part Type: Engine overhaul gasket set
• Application: OMC 140 HP / GM 3.0L marine engines in cataloged 1973-1988 applications.
• Engine: OMC 140 HP / 3.0L
• Application Years: 1973-1988

Interchange / OEM References

• GLM: 39820
• Mallory: 9-61100