BBB A+ Accredited Business
Description
Sierra 18-3863 Head Gasket
Sierra 18-3863 Head Gasket is a replacement part for Mercury Marine engines. Sierra aftermarket parts are manufactured to meet or exceed OEM requirements.
- For Mercury Model 135/150
- Use with 18-4317 Powerhead Gasket Set
Interchangeable with:
- GLM
- 35880
- Mallory
- 9-63855
- Mercury Marine
- 27-96281
- 27-96281T01
- 27-96542
- 27-96542-1
- 27-965422
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.