Cometic GM BBC 1.850 inch X 1.900 inch Port .30 inch MLS Exhaust Gasket 1986-yamaha-yz250-esi3878648 How It Works -The Throttle

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Cometic GM BBC 1.850 inch X 1.900 inch Port .30 inch MLS Exhaust Gasket 1986-yamaha-yz250-esi3878648 How It Works -The ThrottleCOMETIC MLS (Multi Layer Steel) Exhaust Gaskets are designed for extreme cylinder pressures. MLS Exhaust Manifold Gaskets maintain a torque set and resist corrosion. They will not burn through or push out. MLS Exhaust Manifold Gaskets withstand different combinations of cylinder head and exhaust manifold materials. No sealants are required. This exhaust gasket features 1. 850" x 1. 900" Port. This Part Fits: Year Make Model Submodel 1965 1975