1. Made of high-quality materials that are resistant to high temperature and high pressure environments to ensure long service life and reliable sealing performance. 2. By providing a reliable seal, this gasket helps prevent exhaust gas leakage and protects the engine compartment and surrounding environment from exhaust gases. 3. Simple installation, strong and durable, long service life, can replace damaged or old elbow gaskets. 4. Applicable to Mercruiser Stern Drive and other models. Reference adapted models include Mercruiser Stern Drive 27-863726, 27-860232, 27-818832, 27-871051, 27-87105, and Mallory 9-61414, GLM 32080, Osco 8503-GO, etc. Please check the car model before purchasing to avoid incompatibility. 5. OE::27-863726/18-2849-1 /27-818832 6. Material: graphite composite board