This cylinder head fit is designed for use with Cummins engines, model numbers K19 K38 K50 QSK NT855 N14 K60. Made in China, it is a high-quality replacement part for your heavy equipment. The fit is perfect for those looking to replace their cylinder head without having to modify their engine. This product is ideal for those in the heavy equipment industry, specifically for those who own or operate Cummins engines. Its durable construction and precise fit make it a reliable choice for those in need of a replacement cylinder head.