6660DA Retainer Straight Worm Bearing Fits Case-IH Tractor Models A B +One New Aftermarket Replacement Retainer Straight Worm Bearing that Fits Case IH Industrial Construction Models: 2404, 2424, 2444, 2504 Also fits: Fits Case IH Tractor Models: A, AV, B, BN, C, H, HV, M, MD, MDV, MV, SUPER A, SUPER AV, SUPER C, SUPER H, SUPER HV, SUPER M, SUPER MTA, 100, 130, 140, 200, 230, 240, 300, 340, 350, 400 Fits FARMALL, 404, 424, 444, 450, 504 Fits Case IH Cotton Picker Models: 414, 420 Dim A (1) 2. 1875" X 12 RH Thread