NEW STARTER DRIVE. USE 2 BOLTS AND TAB WASHERS TO ATTACH SPRING 1860639 (NOT INCLUDED) AND DRIVE LUG FROM YOUR OLD STARTER DRIVE. FITS ALLIS CHALMERS WC, WF, WD WD45, D10, D12 & D14 THRU 1960; JOHN DEERE: SUPER POWER STARTER DRIVE ASSEMBLY, SPECIAL GEAR REDUCTION ON UNIT GIVES MORE POWER FOR HARD TO START TRACTORS ON M. L SERIES, 40, 320, 420, 430; INTERNATIONAL HARVESTER SUPER A, C, SUPER C, H, M, SUPER M, W4, SUPER W4, SUPER W6, 100, 130, 140, 300, 330, 340, 350.