Tappet Block Kit,Chrome Plated Panhead Shovelhead All Yrs W/ Screws Rpl 18602-80A 18603-80A Chrome plated cast iron tappet blocks fit all Panhead and Shovelhead with either solid or hydraulic lifters. Features improved drain back holes. Comes with chrome plated allen head mounting bolts to fit early or late size threads in engine case. Use tappet block alignment tool 60735 for professional installation. (Imported)