This high-quality piston cooling nozzle is a perfect fit for Cummins engines ISX and QSX X15. It is designed to ensure optimum performance and durability, making it a reliable choice for truck owners and mechanics alike. The unit is manufactured in China and comes with a manufacturer part number of 3687058 3412860 3680496. The nozzle is made of strong and durable materials, ensuring it can withstand the rigors of heavy-duty use. It is easy to install and use, making it a hassle-free addition to your truck. This item is perfect for those looking for a replacement or upgrade piston cooling nozzle for their Cummins engine.