One New Aftermarket Replacement Oil Cooler Core Fits Caterpillar Pipe Layer Models: 578, 583H Fits Wheel Loader: 966A, 966B Fits Crawler / Loader Models: 977H, 977K Fits Crawler / Dozer Models: D8H, D8K Please Note: Your Oil Cooler Core May Look Slightly Different. Replaces Part Numbers: 7N0113, 9M8041, 2M2319, 0R3507 All OEM part numbers and logos are to be used for identification purposes only