Radiator Hose - Lower Fits John Deere 2510 2520 R38313One New Aftermarket Replacement Lower Radiator Hose Fits John Deere Row Crop Tractors This aftermarket replacement lower (bottom) radiator hose connects the radiator to the engine block as part of the cooling system on Fits John Deere 2510 and 2520 row crop tractors. Keeping the cooling system in top condition is essential for diesel tractors operating under heavy loads, and this hose is a direct drop in replacement for the original equipment part.