SIERRA GM 3.0L / 181 CID Marine Head Gasket – 18-2946

Description

SIERRA GM 3.0L / 181 CID Marine Head Gasket – 18-2946

Sierra 18-2946 is a Cylinder head gasket engineered for the specified marine application. GM 181 CID / 3.0L four-cylinder marine engines used in MerCruiser, OMC and Volvo Penta installations matching the listed OEM references.

• Cylinder-head gasket for the GM 181 CID (3.0L) marine four-cylinder engine family.
• Cross-references MerCruiser 27-52364 / 27-810841 and OMC/Volvo 3853336 / 908611 plus related legacy references.
• Designed for the combustion, oil and cooling passages of the specified marinized GM engine.
• A head-gasket replacement should include checks for head/block flatness, corrosion and cooling-system causes of failure.
• Use the engine manufacturer’s tightening sequence, fastener requirements and torque specification during assembly.

Fitment for marine engine and drive service parts can vary by model, serial number, gearcase, cooling configuration and prior component supersessions. Compare the original OEM number and physical configuration before installation, and renew related seals, locking hardware or adjacent wear items when their condition requires it.

Specifications

• Manufacturer: Sierra
• Part Number: 18-2946
• Part Type: Cylinder head gasket
• Application: GM 181 CID / 3.0L four-cylinder marine engines used in MerCruiser, OMC and Volvo Penta installations matching the listed OEM references.
• Engine Family: GM 181 CID
• Displacement: 3.0L

Interchange / OEM References

• Chris-Craft: 16.50-00204
• GLM: 36150
• Mallory: 9-63700
• Mercruiser Stern Drive: 27-52364, 27-810841, FI5000204
• OMC Stern Drive: 0914812, 3853336, 908611, 913274
• Volvo Penta: 3853336, 908611