On engines with higher power and higher thermal load, there is a danger of oil overheating during driving. In this case. The oil film may rupture and the engine bearings and pistons may be damaged. The function of the diesel engine oil cooler is to avoid these problems. The oil cooler is not needed when the engine is cold, so it is only switched on when the oil temperature reaches about 90°C.
The diesel engine oil cooler price at MyMRO is quite affordable. At MyMRO, you can buy various types of aftermarket oil coolers for excavators, tractors, trucks of Cummins, CAT Caterpillar, Perkins, Bobcat, Hitachi, John Deere, Komatsu, Kubota, etc.