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.

Donaldson Company, Inc. was founded in 1915 by Frank Donaldson in Minneapolis, Minnesota, USA. Initially, the company developed an air cleaner for farm tractors, addressing a critical need for engine protection in dusty agricultural environments. Today, Donaldson remains headquartered in Minneapolis and has grown into a global leader in filtration systems, serving a wide array of industries beyond agriculture. Donaldson is renowned for its comprehensive range of filtration products, including air, liquid, and hydraulic filters. Its advanced filtration technologies are designed to protect engines, equipment, and processes from contaminants, enhancing performance and extending machinery lifespan. The brand's product lines include PowerCore® air filters, TopSpin™ pre-cleaners, and various fuel and lubricant filters, all engineered for demanding operational conditions in heavy-duty machinery. At Partao, you can find a broad selection of genuine Donaldson spare parts across top categories such as Bolts & Fasteners, Hydraulic Filters, Oil Filters, Air Filters, and Beacon Lights. These components are essential for maintaining the efficiency and longevity of agricultural and off-highway equipment. Over 77,088 genuine Donaldson spare parts are available at Partao. Equipment operators globally rely on Donaldson for robust and effective filtration solutions. The brand's extensive network ensures that high-quality replacement parts are accessible, supporting the continuous operation of machinery in diverse applications, from agricultural fields to construction sites. Choosing Donaldson parts helps maintain optimal engine health and operational reliability.