Aeromotive Inc. is a true high performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components. Utilizing aerospace tolerances and procedures, three generations of track experience, and a meticulous approach to engineering, Aeromotive Fuel Systems has become the absolute pinnacle of performance fuel delivery. 28 Tooth Cog Belt Pulley. Features a 3/8 Pitch. Dimensions 5.5 x 5.5 x 2.75 in.