CAT 126-1814 / 1261814 ultra high efficiency hydraulic/transmission oil filter. The original title describes it as a genuine CAT part; verify the stock markings and required filter grade before ordering.Recorded applications and cross-references INDUSTRIAL TRACTOR HA771 MINING EXCAVATOR 5110B 5130B WHEEL FELLER BUNCHER 533 TRUCK 797F 785 793F CMD 794 AC EXCAVATOR 365B OFF HIGHWAY TRUCK 796 AC 798 AC MOTOR GRADER 24H Caterpillar 1261814,126-1814, 3I1768Donaldson P170309Fleetguard HF35453Luberfiner LFH5083Napa 7397SF Schupp SPH 12555SPH12555Reference verificationThe source lists Fleetguard HF35453, while a legacy tag reads HF3453. It also records Caterpillar 3I1768, while tags include 317-1768 and 326-1643. These have not been corrected or assumed equivalent.1R-0732, 1R-0749, 1R-0762 and 1R-1808 are retained search references, not confirmed same-efficiency substitutes. Match the exact filter, machine serial, housing and serviced circuit. “Ultra high efficiency” is the recorded grade, not a stated micron rating or guarantee that the filter serves both hydraulic and transmission circuits on every machine.