Fan and alternator belt. Tractors: 3400, 3600, 3610, 4100, 4400, 4600, 4830, 5030, 5600, 6600, 7600 (all w/56-1/4" belt O.C.). Water pump and alternator belt. Tractors: 8000 (w/56-1/4" belt O.C.), 8600, 9000 (w/56-1/4" belt O.C.), 9600. Air conditioning belt. Tractors: 5610 (w/56-1/4" belt O.C.), 6610, 7610, 7710, TW5, TW15 (w/56-1/4" belt O.C.), TW25 (w/56-1/4" belt O.C.), TW35 (w/56-1/4" belt O.C.).