Cometic's MLS head gasket for 1989–1998 BMW M5, 320i and 520i with an 81mm bore and .040" compressed thickness is built for demanding sealing. The multi-layer steel construction combines embossed AMP-coated outer layers with an uncoated stainless center shim to tolerate varied surface finishes and loads. This design requires less clamp load, reduces bore distortion and helps distribute sealing load across the gasket area.
Cometic 89-98 BMW M5/320i/520i 81mm Bore .040 inch MLS Head Gasket