Brake Disc
CTPA-AR66749 Replacement Part to Fit:  John Deere For Models: 4000, 4020, 4040, 4050, 4230, 4240, 4250, 4430, 4440, 4450 Used W/ Riveted Brake Linings. Replaces: AR72373  Price:  $107.62  Buyers Club Price:  $96.86