This Filter Head Adapter is a must-have for any Cummins Engine owner. It fits perfectly on KTA19, KTA38, KTA50, NT855, and QSK models. The Adapter is made in China and comes in a unit quantity of 1. It is designed to improve the performance of your engine by enhancing its filtration system. The Adapter is made of high-quality materials that are durable and long-lasting. It is easy to install and will seamlessly integrate with your engine. With this Filter Head Adapter, you can be sure that your engine is protected from harmful particles and contaminants that can cause damage.