18555-36HK 4340 chromoly steel tappet screws. Special

When you are building a high-performance top end, these JIMS specialty tappet screws are exactly what you need for a custom lubrication setup. Machined from 4340 chromoly steel, these screws feature a precision-drilled oil hole through the center, designed specifically to facilitate top-end lubrication through the pushrods. They feature a 3/8-inch ball end and 9/32-32 threading. These are intended for use with special JIMS tappets and fit 1936 to 1952 Knucklehead and Panhead models, as well as Shovelhead and Evolution engines running the appropriate JIMS hardware. Sold as a pack of four, they are a must-have for mechanics looking to improve oil flow on vintage or custom builds.