519459 Motor sprocket 45", 30t

For those working on vintage iron, this 30-tooth motor sprocket from MCS is a specialized part for the 45" Sidevalve engines. It fits 1929 to 1973 45" SV models, including the iconic WLA and Servi-Car. Maintaining these classic machines requires parts that respect the original engineering, and this sprocket is built to provide the correct fitment and long-term service. Whether you are restoring a military-spec bike or keeping a civilian flathead on the road, this 30-tooth sprocket ensures your primary drive remains reliable. It is an essential piece for any mechanic dedicated to keeping these historic Harleys running, referenced by part number 519459.