AB2820R 6V Headlight Tail Light Bulb Fits John Deere A B H R 50 520 530 60 620 6One New Aftermarket Replacement 6 Volt Light Bulb Fits Allis Chalmers Tractor Models B, C, CA, D10, D12, D14, D15 (up to sn 9001), IB, WC, WD, WD45. Fits Case Tractor Models DC, LA, SC, [ VA, VAC, VAH (up to sn 5400000) ], 600, 900. Cockshutt Tractor Models 20, 30, 40, 50, 540, 550, 560, 570, Co Op with Continental F124: E2, Co Op with Buda Over Head Valve Engine: E3, E4, E5. IH Tractor Models A, A1, AV, AV 1, B, BN, C, Fits Cub, H, HV, I4, I6, I9,