This idler gear fit is designed for Cummins engines with the model numbers K19, K38, and K50. It is a high-quality replacement part for your truck's engine, ensuring smooth and efficient operation. The unit type is a belt and pulley, and it is manufactured in China. The part number for this item is 3628823, and it also has the manufacturer part numbers 206774, 3004592, and 3004681. It is compatible with these part numbers and is sold in a unit quantity of one. This item is perfect for those looking for a replacement part for their Cummins engine, and it is sure to fit perfectly with the listed model numbers.