Introducing the BD 1030423E Valve Body With Governor Pressure Solenoid & Transducer — the perfect addition to your 5.9L Cummins 2003-2007 to keep your vehicle shifting seamlessly. The modified valve body has been upgraded with a governor pressure solenoid and transducer, which are designed to ensure mainline pressure is kept running at optimal levels. To prevent any internal leakage at the same time, hand-lapped valve body surfaces have been installed for advanced precision. Enjoy first and second gear lock-up ability for a smoother driving experience overall. Put your trust in this top-of-the-line product from BD and invest in a reliable, long-lasting performance tool today!