The Donaldson P551381 is a genuine OEM spin-on full-flow oil filter designed for superior engine lubrication in heavy-duty agricultural, construction, and industrial machinery. Featuring a 93 mm outer diameter and 175 mm length, this filter includes a 1-16 UN thread, a 1.7 bar bypass valve, and an anti-drainback valve. Its 20 micron efficiency ensures optimal filtration, protecting critical engine components. It is a direct replacement for numerous OEM part numbers, including Caterpillar 1R0739 and John Deere RE504836, fitting a wide range of models from brands like John Deere, Caterpillar, Komatsu, and Volvo.