The Perkins 2637A003 is a genuine OEM belt tensioner pulley designed for various Perkins 1100 series engines, including 1104C, 1104D, 1106C, and 1106D models. This critical component maintains proper tension on the engine's drive belts, preventing slippage and ensuring efficient operation of accessories. Manufactured to Perkins' exacting standards, it provides reliable performance and durability. With dimensions of 95 mm length, 95 mm width, and 51 mm height, and a weight of 0.28 kg, it is a direct replacement for original equipment, compatible with numerous AGCO, Massey Ferguson, Fendt, Valtra, and Challenger machines utilizing these Perkins engines.