This idler shaft is a high-quality replacement part for Cummins engines, specifically designed to fit KTA19, KTA38, KTA50, and NT855 models. It is manufactured in China and comes in a unit quantity of one. As a crucial component of the engine's timing system, this idler shaft ensures smooth and reliable operation. It is made of durable materials to withstand the rigors of heavy-duty use and is designed to meet or exceed OEM specifications. This part is a must-have for anyone looking to maintain the performance and reliability of their Cummins engine.