The Fleetguard Hydraulic Filter HF6552 is equivalent to CAT 144-6691,145-6691, 3I-0609, Baldwin BT8840-MPG, Case A165029, Clark 6630977, Melroe-Bobcat 6661248, Vermeer 81902001, Donaldson P164375, P761064, Komatsu 848100086, New Holland 82003166, 87588814, 87682682, 87707947, 920019190, 8E66520422.