The John Deere AR57264 is a genuine OEM fuel pump designed to provide consistent and efficient fuel delivery for a wide range of John Deere agricultural, construction, and industrial equipment. This mechanical fuel pump is a critical component for engine performance, ensuring proper fuel pressure and flow. It replaces several superseded John Deere part numbers, including AR50781, AR55731, AR66719, AR70007, RE27649, RE37483, RE68344, RE68345, and SE501004, as well as their remanufactured 'R' versions. Measuring 139.7 mm in length, 88.9 mm in width, and 88.9 mm in height, and weighing approximately 0.45 kg, this pump is engineered for precise fitment and durability in demanding operating conditions across numerous John Deere tractor, combine, cotton picker, and industrial models.