This crankshaft pulley fit is designed for use with Cummins K19, K38, K50 engines, and is made in China. It is a high-quality replacement part that ensures optimal performance and reliability for your heavy equipment. The unit quantity is one, and it is sold as a single item. Whether you're in need of a replacement part for your Cummins engine or simply want to upgrade your heavy equipment, this crankshaft pulley fit is an excellent choice.