Coil 21401DAX 57926DX for IH Farmall Tractor A B C H M MD W6 Magneto H1 H4 F4 F6 Replace Part Number: 21401D, 21401DAX, 57926DX, 47439DA pplications:Fit For Stationary Engine With H1 Magneto Fit For IH Farmall With H4 Magneto Tractor:A, AV, B, BN, C, HV, I4, I6, I9, ID6, ID9, M, MD, MDV, MTA, MV, O4, O6, ODS6, OS4, OS6, Super A, Super A-1, Super AV, Super AV-1, Super C, Super H, Super HV, Super M, Super MD, Super MDV, Super MDV-TA, Super MTA, Super MV, Super MVTA, Super W4, Super W6, Super W6TA, Super W9, Super WD6, Super WD6TA, Super WD9, Super WDR9, T4, T5, T6, T9, TD14, TD14A, TD18, TD6, TD9, U2, U2A, U4, U6, U9, UD6, UD9, W4, W6, W6TA, W9, WD6, WD9, WDR9, WR9, WR9S, 100, 130, 200, 230, 300, 350, 400, 450, 600, 650 (Some models), Super MTA, W6TA (Some models), Wheatland: 400, 450 (Some models), UD14, UD18 (Some models)Fit For IH Farmall With F4 F6 Magneto Tractor:F12, F14, F20, F30, I12, O12, Regular (Some models), T20, W12, W14, W40 Fit For Mc Cormick Deering Tractor:10-20, 15-30, 22-36 (Some models)