Huckstorf Diesel is proud to offer genuine Bosch remanufactured VP44 injection pumps. Bosch is the original manufacture. They have the best equipment and parts to rebuild these pumps to like new specifications. All necessary parts get replaced with new. The electronic parts are critical to the performance of these pumps. When it comes time to replace the pump on your 5.9L Cummins engine, only use the best, genuine Bosch!