The John Deere JXAR55394 is a genuine OEM oil cooler designed to maintain optimal operating temperatures for John Deere 8000 Series Tractors, including models 8100, 8100T, 8200, 8200T, 8300, 8300T, 8400, and 8400T. This critical component prevents engine oil from overheating, thereby protecting engine longevity and performance. It is a direct replacement for original part numbers AR87405 and AR87405R, ensuring perfect fit and function. With a weight of 0.12 kg and dimensions of 95 mm length, 51 mm width, and 51 mm height, this oil cooler meets precise specifications for reliable operation.