Drop in replacement for John Deere Part Number AM101957. Fits John Deere Tractors 755, 855, 955. Fits John Deere Mowers F1145, 1420, 1435, 1445, 3325, 3365. Robust steel tube, aluminum fin construction. Staggered tube pattern and fin design for maximum performance. Oil side is enhanced with internal turbulation for superior heat transfer. Helium leak tested from the factory. Buy this cooler and support American workers.