Upgraded Fuel Pressure Regulator Spring for the Ford 6.0L Diesel. This kit comes with the washers and hardware required to upgrade your fuel pressure regulator spring. This is a stock Ford part. The upgraded spring helps to maintain the proper fuel pressure at idle, cruising and at wide-open throttle.
Fuel pressure needs to be maintained at the proper level in order to maximize performance and reliability.
There are two different versions that vary slightly: E-Series (Vans) and F-Series (Trucks).