311092 Years:1958 & Up Tube (Air Cleaner) Fits Ford Tractors: 4000 (4 Cylinder), 801,811,821,841,851,861,871,881, 901,941,951,961,971,981,1801,1811,1821,1841,1871, 1881, 4030, 4040, 4121, 4130, 4131, 4140 (For All Models With 172 Cubic Inch Gas Engine). Replaces: 86531351, 311092