Sierra 18-3857 Head Gasket
Sierra high-quality engine parts are designed to meet OEM specifications. For use on Chrysler/Force/US Marine and Mercury Sport Jet engines.
Interchangeable with:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Warranty Information
Sierra 18-3871 Head Gasket For Mercury 175, VR4, Mag II Interchangeable with: GLM 35890 Mallory 9-63856 Mercury Marine 27-18786-1 27-18786T 27-187863
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Head Gasket for Mercury/Mariner Engines For Model 150 Replaces: OEM - 27-96542-1 Mallory - 9-63855 GLM - 35880 Pro Marine - 542-1 Redline - RL3863
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