723438 Replacement Seal for 723437

Engineered for the internal assemblies of Sidevalve and Flathead Big Twin engines, this lower end part from Colony is a critical component for vintage Harley-Davidson maintenance. Colony is well-regarded for their dedication to the restoration market, producing hardware and engine internals that mirror the dimensions and material properties of original equipment. This part facilitates the proper functioning of the engine's bottom end, where precision and strength are paramount. Whether performing a routine repair or a full engine restoration, this component provides the reliability needed for these historic sidevalve models. It represents a dependable solution for keeping classic V-twin engines running efficiently.