🚀 Elevate Your Ride with Sinister Diesel! Transform your ride with a 15% increase in fuel pressure! Everything you need, from O-Rings to hard parts, is in the box. Manufactured in the USA for superior reliability and performance. Designed specifically for 2003-2007 Ford Powerstroke 6.0L models. Get back on the road faster with a hassle-free install. Fast Install 15% Performance Boost Made in USA The Sinister Diesel Blue Spring Kit is a high-performance fuel regulator upgrade designed specifically for 2003-2007 Ford Powerstroke 6.0L Diesel models. This kit enhances fuel pressure by up to 15%, ensuring your engine operates at its full potential. It includes all necessary components for a quick and reliable installation, making it a must-have for any serious diesel enthusiast.