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This Cometic copper head gasket is built for Chevrolet Gen‑1 small block V8 engines with an 18/23° head angle and 4.200" bore. The .043" copper construction requires less clamp load while embossed outer layers and Viton coating conform load distribution across the sealing area. It minimizes bore distortion and is supplied ready to install without sealants or re-torque when matched to compatible components.
Cometic GM SB 18/23 Deg 4.200in Bore 0.043in Copper Head Gasket (No Steam Holes)
