This bypass valve plunger is a high-quality fit for Cummins engines K19, K38, K50, N14, and NT855. It is a reliable and efficient unit that is essential for the proper functioning of your engine. The plunger is made by a reputable manufacturer and is designed to meet the highest standards of quality and performance. This unit is a must-have for anyone who wants to ensure the optimal functioning of their Cummins engine. It is easy to install and use, and it is a cost-effective solution that will provide reliable and efficient performance for years to come. Don't miss out on this opportunity to upgrade your engine and purchase this top-quality bypass valve plunger today!