.051″ thick 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. MLS head gaskets eliminate the use of dowel pin o-rings. Standard 3-1/2″ bore. OEM replacement reference 16770-84D, 16770-84F.
