Fuel Pressure Spring Kit: Enhance Your Ford Powerstroke's Performance Upgrade your Ford Powerstroke's fuel system with our high-quality Fuel Pressure Spring Kit. Crafted for precision and durability, this kit boosts engine efficiency and driving smoothness. Fitment: This kit is specifically designed for Ford Powerstroke 6.0L Diesel models from 2003 to 2007. It is compatible exclusively with F-series and Excursion vehicles. Reference OE numbers include 3C3Z9T517AG, 904239, R81001, 1843065C98, 3C3Z9T517AA, 3C3Z9T517AE, and 3C3Z9T517AD. Ensure these numbers match your existing parts for compatibility. Optimum Performance: Engineered to enhance the fuel pressure regulator system in the 6.0 Power Stroke, this spring kit ensures improved engine performance, greater fuel efficiency, and a smoother driving experience. Fuel Pressure Spring Kit: This comprehensive kit includes a regulator spring and billet aluminum housing designed to replace the stock regulator on the fuel pressure regulator assembly. It increases fuel pressure, reduces injector stiction, and enhances overall engine performance. Function of Spring: The spring in this kit is meticulously designed to provide consistent fuel pressure to the injectors, enhancing fuel economy, boosting power output, and improving engine responsiveness. Purpose of Housing: Constructed from billet aluminum, the housing is designed to withstand high-pressure fuel flow. It resists rust and wear, ensuring long-lasting performance and durability under demanding conditions. Choose our Fuel Pressure Spring Kit to elevate your Ford Powerstroke's performance and fuel efficiency. Order now to experience superior driving dynamics and engine reliability.