Complete set for one engine. Solid lifter tappets to fit OEM Knuckleheads. Also stock replacement for S&S KN-series (Knucklehead style) engines. Repl. 18491-36 (intake) and 18493-36 (exhaust) tappet assemblies. Note: Special Order Product only. To order please contact your FMC sales representative.
Fits: > 36-47 Knucklehead; All S&S KN-series (Knucklehead style) engines
