The STEYR 87803016 is a genuine OEM idler pulley designed for various STEYR KOMPAKT series tractors, as well as compatible Case IH and New Holland models. This essential component ensures proper tension and alignment of engine belts, contributing to reliable power transmission and extended belt life. With an outer diameter of 70 mm, an inner diameter of 17 mm, and a width of 25 mm, this durable pulley maintains optimal engine accessory function.