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4C2Z-9T517-AA Motorcraft Fuel Pressure Regulator Kit w/ Upgraded Spring - Ford 2003-2007 E-Series

SKU: 4C2Z-9T517-AA
Mftr. Part#: 4C2Z-9T517-AA
Manufacturer: Ford / Motorcraft
2003-2007 Ford 6.0L Powerstroke E-Series w/ upgraded spring by installing this kit, fuel pressure will be raised and will prolong the life of your injectors.

PRODUCT DETAILS (click to expand)

Mftr. Part#4C2Z-9T517-AA

PRODUCT SPECS (click to expand)

Attribute nameAttribute value
Product TypeFuel Spring Kit
Truck FamilyFord 6.0L 2003-2007
Truck Type/ModelFord


This is the new upgraded fuel pressure regulator kit from Ford for their E-series 6.0L with an upgraded spring. The fragile 6.0 injectors are damaged by any pressure below 45 psi. The original stock pressure regulator sets fuel pressure at 50 psi. This does not leave much room for pressure drop due to hard engine demand. If you are running a programmer on your truck, you may want to consider installing this simple modification to help supply the engine with the fuel it is requiring for more power.


  • E-series 6.0L
  • Upgraded spring
  • Increases fuel pressure in fuel rails