The STEYR 87803017 is a genuine OEM tension pulley designed for various STEYR, Case IH, and New Holland agricultural tractors. This essential component maintains proper belt tension, preventing slippage and ensuring efficient operation of engine accessories. With an outer diameter of 140 mm, an inner diameter of 17 mm, and a thickness of 38 mm, this durable pulley weighs 0.68 kg and is engineered for reliable performance and longevity in demanding farm environments.