Description
Restore proper fuel pressure and improve injector performance on your 2003–2007 Ford 6.0L Powerstroke with this OEM Ford Blue Spring Kit (Part #3C3Z-9T517-AG). This is the updated factory solution to common low-fuel-pressure issues that can lead to premature injector failure, hard starts, poor throttle response, and sluggish turbo spool.
This kit includes the upgraded blue spring, all required seals, hardware, and the cover, offering a complete bolt-on solution for aging fuel pressure regulator assemblies.
Why Upgrade to the Blue Spring Kit?
– Restores factory fuel pressure (gain of 8–10 PSI common)
– Prevents injector overrun and starvation
– Smoother idle and improved throttle response
– Reduces air in the fuel system
– Helps extend injector and fuel pump life
– Quicker turbo spool-up and quieter operation
– Most installs take 30 minutes or less with basic hand tools
Replaces: 3C3Z-9T517-AA, 3C3Z-9T517-AD, 3C3Z-9T517-AE
Fitment:
2003–2007 Ford F-250 / F-350 / F-450 / F-550 Super Duty (6.0L Diesel)
2003–2007 Ford Excursion (6.0L Diesel)
Direct fit on all Powerstroke 6.0L diesel engines with HFCM (Horizontal Fuel Conditioning Module)
What’s Included:
– OEM Blue Spring
– Fuel Pressure Regulator Cover
– Updated seals & O-rings
-All necessary internal hardware
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