John Deere Radiator Cap Replaces AA5757RFits: 50, 60, 70, 80, 420, 430, 435, 440, 520, 530, 620, 630, 720, 730; (820, 830, 840 2-Cyl), 1010 If you have a John Deere 50, 60, or 70 please confirm that you need a pressurized radiator cap before ordering (The bottom of your old cap will have a spring like the cap in the picture.)