Billet aluminum connecting rod for the Kohler K-Series engines. These rods have been CNC machined out of aircraft grade 7075 billet aluminum. Our rods come standard with high quality 170,000 lb. tensile strength bolts and a machine tool steel screw in dipper. Rods are machined for a rod bearing (Sold separately). In the drop down option box select from the stock length. Fits 12-16hp Kohler K-series engines.