The Donaldson P550777 is a high-quality spin-on lube oil filter engineered for robust engine protection. This genuine Donaldson filter features a 25 micron efficiency rating and an anti-drainback valve, ensuring clean oil circulation and preventing dry starts. It is designed with an outer diameter of 93 mm, a length of 175 mm, and a 1-16 UN thread size. The gasket has an outer diameter of 72 mm and an inner diameter of 62 mm. Equipped with a bypass valve set at 1.7 bar (25 psi) and utilizing cellulose media, this filter provides reliable performance and is a direct replacement for numerous OEM part numbers, including Caterpillar 1R0739 and John Deere RE504836, suitable for various agricultural, construction, and industrial machinery.