Cometic, gasket set cylinder head. .040" MLS 66-84 Shovelhed (NU)

Fits both front & rear of 3-7/16" (74"/1200cc) & 3-1/2" (80"/1340cc) standard bore applications. MLS (Multi Layer Steel) consists of a top and bottom layer of stainless springsteel which is covered by high temperature rubber on both sides. The inner ring is also stainless steel. These 3 layer gaskets are rivited together outside the gasket surface for ease of installation. OEM replacement reference 16770-66A. 66-84 Shovelhed (NU)