The Cat 4621171 Oil Filter is a genuine OEM spin-on filter designed to effectively remove contaminants from engine, transmission, and hydraulic oil systems. Engineered to meet precise Caterpillar specifications, this standard efficiency filter ensures superior protection and extended component life for a wide range of Cat equipment. It features a 1-16 UN-2B thread size, an overall length of 171.45 mm, and a bypass relief valve setting of 172.37 kPa (25 psi).