RE49908 Tractor Radiator Cap Fits John Deere 8560 8570 8760 8770 8960 8970 9100One New Aftermarket Replacement Radiator Cap Fits John Deere 8000 and 9000 Series Tractors This aftermarket replacement radiator cap Fits John Deere large frame 8000 and 9000 Series tractors. The radiator cap pressurizes the cooling system to help raise the coolant boiling point and prevent overheating, and releases excess pressure to protect the radiator and hoses. This is a 7 PSI short reach cap designed for the cooling systems used across these