Ford 6.0L Powerstroke Fuel Pressure Regulator Replacement – OE Quality

ford fuel pressure regulator OE:3C3Z-9T517-AG

✅ Compatible Vehicles

• 2003-2007 Ford F-250/F-350/F-450/F-550 Super Duty equipped with the 6.0L Powerstroke Diesel Engine

• Also compatible with 6.0L diesel variants of the same-series Ford E-Series vans / cargo vans

✅ Typical Applications

1. Low OEM Fuel Pressure Issues: When the factory regulator spring is worn or weakened, it causes fuel pressure to drop below 40-45 PSI at idle or under light load, leading to hard starting, rough idle, and lack of power.

2. High-Pressure Pump & Injector Protection: After upgrade, fuel pressure is stabilized at 60-65 PSI, reducing injector wear and extending their service life.

3. Troubleshooting & Repair: Fixes leaks caused by worn regulator O-rings/seals, which result in fluctuating fuel pressure, air entering the system, and illuminated check engine lights.

4. Mild Performance Upgrades: Works with ECU/tuning upgrades to deliver consistent fuel supply and prevent pressure drop under high-load conditions.

✅Common Symptoms of a Bad/Failing Fuel Pressure Regulator (6.0L Powerstroke)

1. Hard Starting / Long Crank TimeEngine cranks but takes 5–10 seconds to start; multiple cranks required.

2. Rough Idle / Erratic IdlingUnstable idle; engine shakes, stumbles, or surges at idle.

3. Loss of Power / Poor AccelerationWeak throttle response; hesitation or jerking under load/acceleration.

4. Stalling (Idle or Driving)Engine stalls unexpectedly at idle or while cruising.

5. No-Start ConditionEngine cranks normally but will not start (complete regulator failure).

6. Decreased Fuel MileageRich fuel mixture causes poor fuel economy.

7. Black Smoke from ExhaustOver-fueling due to high pressure; rich combustion.

8. Fuel LeaksLeaks at regulator housing, cover, or return line.

9. Check Engine Light (CEL)Possible codes: P2296, P0089, P0191 (fuel pressure control circuit/range).