This genuine Welger 1729251902 sprocket is designed for optimal performance in Welger balers. Featuring 19 teeth, a 25mm bore diameter, and an outer diameter of 120mm, this durable component ensures reliable power transmission. It is a direct replacement part for a wide range of Welger AP and D series balers, including models AP45, AP50, AP51, AP52, AP53, AP61, AP63, AP71, AP73, AP83, AP400, AP430, AP500, AP530, AP600, AP630, AP730, AP830, D4000, D5000, D6000, and D8000.