The John Deere RE551900 is a genuine OEM belt designed for optimal performance in various John Deere machinery. This durable belt ensures reliable power transmission for compatible 4R and 4M series Compact Utility Tractors, including models 4044R, 4049R, 4052R, 4066R, 4044M, 4049M, 4052M, and 4066M. It also fits XUV835E, XUV835M, XUV835R, XUV865E, XUV865M, and XUV865R Gator Utility Vehicles. Measuring 266.7 mm in length, 12.7 mm in width, and 12.7 mm in height, with a weight of 0.054 kg, this belt is a direct replacement for the superseded part RE503083.