18556-40K 15-73 tappet adjusting screw kit

This JIMS tappet adjusting screw kit is a versatile solution for a wide range of vintage Harley-Davidson engines. It fits 1915 to 1973 45, 74, and 80 cubic inch Flathead models, as well as 1952 to 1956 K and KH models. These 9/32-32 threaded screws serve as a stock replacement for OEM 18556-40 and will work with any other tappets using that thread size. Sold as a pack of four, these screws are manufactured with the precision and durability required for older engines that rely on manual valve adjustments. Whether you are maintaining a classic Flathead or a K-model, JIMS hardware provides the reliability you need for the long haul and ensures your engine stays in tune.