DRIVE WHEEL HUB (9-BOLT WHEEL - 86MM AXLE) (4040 TRACTOR SERIAL NO. -XXXXXX) (16.9-38, 18.4-38 AND 20.8-34 TIRES) (4042 TRACTOR SERIAL NO. -XXXXXX) (16.9-38, 18.4-38 AND 20.8-34 TIRES) (4044 TRACTOR SERIAL NO. -XXXXXX) (16.9-38, 18.4-38 AND [06C18] 80 WHEELS, FRONT AXLES, SHEET METAL 4040, 4240 and 4440 Tractors (North American Edition) PC1898 in TRACTOR 4240