MCS-992016 - 3-5/8" big bore. Includes 0.045" PTFE coated head gaskets; RCM (Rubber Coated Metal) cylinder base gaskets; RCM rocker cover gaskets; and includes all o-rings; gaskets and seals to complete a 3-5/8" Shovelhead top end rebuild.

Fitment:
66-84 Shovelheaed with 3-5/8" big bore cylinders (NU)