Aitook Yamaha GT80 GT80H GT80MXB GTMX Fuel Tank Switch Valve Petcock Fits Following Yamaha Models: 1977 DT100D DT100, 1978 DT100E DT100, 1979 DT100F DT100, 1980 DT100G DT100, 1981 DT100H DT100, 1982 DT100J DT100, 1983 DT100K DT100, 1981 DT80H DT80, 1982 DT80J DT80, 1983 DT80K DT80, 1974 GT80A GT80, 1975 GT80B GT80, 1976 GT80C GT80, 1977 GT80E GR80, 1978 GT80 Fits Following Yamaha Models: 1978 GT80F GT80, 1980 GT80G GT80, 1974 YZ80A YZ80, 1975 YZ80B YZ80, 1976 YZ80C YZ80, 1977 YZ80D YZ80, 1978 YZ80E YZ80, 1979 YZ80F YZ80, 1979 MX100F MX100, 1980 MX100G MX100, 1981 MX100H MX100, 1982 MX100J MX100, 1983 MX100K MX100, 1980 MX80G MX80, 1981 MX80H MX80, 1982 MX80J MX80, 1974 TY80A TY80, 1875 TY80B TY80 Replaces Part Number: 367-24500-04-00 / 122-24500-00-00 / 451-24500-00-00 / 451-24500-01-00 Petcock thread size = M14x1 (14x1mm) Aitook petcock made from high-quality materials for maximizes performance and ensures lasting durability