8721-1-Z Oil pump nut, early style

This early-style oil pump nut from Colony is an essential piece of hardware for anyone working on vintage Sidevalve engines. Featuring a zinc finish and a long shoulder design, this nut is threaded at 1/4-24 to match original specifications perfectly. It is a direct replacement for OEM part number 24830-41. This specific nut is designed to fit 1941 to 1948 Sidevalve Big Twins as well as 1941 to 1954 45-inch Sidevalve models. When you are dealing with classic oiling systems, using the correct fasteners is crucial for both functionality and authenticity. Colony’s commitment to reproducing hard-to-find vintage hardware ensures that your classic Harley stays on the road with parts that look and perform just like the originals.