HD-OEM: 24621-40Part Number: 10-0279 Manufacturer: Sifton UOM: 1 - EA Summary:Machined and ground to factory specifications. *NOTE: Left side cases accept standard case race. Case race requires to be installed with a .0025 interference fit.Fitment: UL 1940-1948 74" and 80" EL 1940-1952 61" FL 1941-1954 74" Tech. Notes:Suggested to use with #10-0488 Sifton Engine Pinion Shaft.Measurements: Outer Diameter: 2.0015" Country of Origin: Imported