Double-clutch assembly, 11" x 8-1/2", same as supplied by OEM with 8-1/2", PTO disc. Does not include engine clutch disc. Tractors: 2000, 3000, 4100 (1965-9/1969 & 6/1971-1975), 2100, 2110 (1/1969 to 9/1969), 2300 (1/1969 & up), 2310 (6/1971 & up), 3055 (1/1965 to 9/1970), 3100, 3110, 3120, 3190, 3300, 3310, 3330 (1/1965 to 9/1971), 3400 (1/1965 to 9/1971), 2600, 3600, 2610, 3610, 4110 (1/1965 to 9/1975), 230A, 233, 333 Highway, 335 Utility, 340A, 231, 234, 334, 530A, 531 (1981-4/1983). Can replace D8NN7502BA, E0NN7502AA.