The 2003-2007 Ford Powerstroke 6.0L Diesel truck models frequently experience fuel pressure drops which can cause major damage to the fuel injector, reduce performance and in many cases lead to leaks. Sinister Diesel Blue Spring Kit with Billet Spring Housing is designed to provide you with a high quality, reliable and safe to use fuel regulator kit that won't just boost your ride performance but will also help prolong its lifespan. Once installed, the Blue Spring Kit will help you increase your fuel pressure by 10 - 15psi. Thanks to the increase fuel pressure you'll gain from this durable Ford POWERSTROKE Fuel Regulator Kit, it will help prevent the injectors from outflowing to the stock fuel pump to help air from getting into the injector. This not only helps prolong the life of your fuel injector but also improve fuel economy! It comes packed with everything you need to install it including O-rings, Bolts, Gasket and more. It's so easy to install that anyone can get it ready to go in less than 30 minutes - it's really that simple! Click on the "Add To Cart" button now to never have to worry about low fuel pressure for your fuel injectors ever again!