Jims Tools 5504 Jims Tappet Pos Holding Tool Expert technicians know that keeping the same parts operating in their original position and direction is a good idea. This is especially true with the tappets in Harley-Davidson engines. Whenever the tappets are removed, in the case of a camshaft change or complete tear down, our new Tappet Position Holding Tool allows the tappets and anti rotation pins to be safely and accurately stored for proper reinstallation. Tappet locations are clearly referenced on the tool, which also serves to protect the tappets from damage when removed from the engine. For all Twin Cam engines 1999 to present and 2000 to present XL and Buell (except 1125R).