Cast iron tappet guides with a silver powder coated finish. Used in the S&S KN-series (Knuckle) engines, will also fit stock 36-47 Knucklehead engines. Includes gaskets and mounting hardware. Repl. 18600-36 front & 18610-36 rear tappet guides. Note: See 531599 for a replacement front & rear gasket set only.
