S&S Cycle Oil Pump Compression Return Fitting – Replaces Harley OEM 63523-92

This is a compression-style oil pump return fitting used to connect the oil pump return line to the oil tank on Harley-Davidson Big Twin engines.

The fitting is chrome plated and made in the USA with a compression seal that provides secure return line connection. It is designed for direct replacement of the factory oil pump return fitting or use in custom oil system assemblies.

This part replaces Harley OEM 63523-92 (also compatible with 63523-62) and fits oil pump return circuits on a range of Big Twin models where compression fittings are required. Boomers Bike Shop stocks parts we trust for correct fit and real-world use.

Fitment

FL: 1966–1999 (Shovelhead, Evolution)
FX: 1971–1999 (Shovelhead, Evolution)
XL (Ironhead): 1977–1985