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The Cometic .030in MLS exhaust header gasket for Chevrolet Mark‑IV and GM Gen‑V/VI Big Block V8 engines, specified for AFR BBC Magnum 24‑degree heads, uses multi-layer stainless steel construction with embossed, Viton-coated outer layers. The MLS design rebounds, resists corrosion, and reduces clamp load to limit bore distortion while providing durable sealing across exhaust header surfaces.
Cometic Chevy Mark-IV/GM Gen-V/VI BB V8 .030in. MLS Exh Hdr Gasket w/ AFR BBC Magnum 24 Degree Heads
