Vertical muffler for gas tractors, fits engines C146, C153, and BC144. Inlet I.D. 1-15/16", outlet O.D. 2", length 27", diameter 5-1/2". Tractors: 424, 2424, 444, 504, 2444, 2500, 2504, 3514, 3444.Product No. -- 403825R1 | UPC -- 758351879652 | Standard Pack -- 1 | Weight -- 5.93 lbs