S&S, 36-47 solid lifter tappet, exhaust. Standard

36-47 Knucklehead; All S&S KN-series (Knucklehead style) engines

Exhaust tappet only. Solid lifter tappet to fit OEM Knuckleheads. Also stock replacement for S&S KN-series (Knucklehead style) engines. Repl. 18493-36. Note: See 531590 for a complete intake & exhaust tappet set.