The Cometic MLS head gasket for the Nissan RB-26 six-cylinder uses an 88mm bore with .051in thickness and multi-layer steel construction. Embossed outer layers incorporate AMP coating while the center shim is uncoated stainless steel, allowing thickness variation for application needs. This construction reduces required clamp load, helps limit bore distortion, and improves load distribution across the sealing surface.
Cometic Nissan RB-26 6 Cyl 88mm Bore .051in MLS Head Gasket