Quality Ensurance for More Power: This go-kart torque converter is made of high-quality iron and aluminum material which is lightweighted, sturdy and durable while allows higher speeds out of small engine, and smoother acceleration. This clutch will help you get more power out of your small engine by reducing engine load. Complete Parts for Easy Assembly: This torque converter fits a 3/4″ shaft and comes with a 10 tooth sprocket for a #40/41/420 chain and a 12 tooth sprocket for a #35 chain. It will work with engine sizes hp2 to 8hp. 30 series Asymmetrical design. Important parts have been assemblied Universally Fit: This go-cart torque converter kit replaces OEM part numbers: Comet 218353A, 219552A, 219456A, 217610A, 203814A, TAV2 30-75, Yelf Dog Drive Unit Q43201W Package Includes: 1 x 3/4″ Driver Pulley; 1 x 5/8″ Driver Pulley; 1 x Plastic Assy Cover;1 x Aluminum Mounting Plate;1 x Drive Belt; 1 x 10 Tooth Sprocket for #40/41/420 Chain; 1 x 12 Tooth Sprocket for #35