5297641 Rail Pressure Sensor Apply to Cummins Tier 3 6.7 liter ISB/QSB 03-07 Dodge 5.9L

The 5297641 Rail Pressure Sensor (also called a High-Pressure Fuel Rail Sensor) is used in Cummins Tier 3 engines, including the 6.7L ISB/QSB and some 2003–2007 Dodge Ram 5.9L ISB applications.

Key Details:

• Part Number: 5297641 (may have supersessions like 5299719 or 4084185)

• Compatible Engines:

  • 2003–2007 Dodge Ram 5.9L ISB (24V)

  • 2007.5+ 6.7L ISB/QSB (Tier 3 emissions)

• Function: Measures fuel pressure in the common rail to help the ECM regulate injection timing and pressure.

Symptoms of a Failing Rail Pressure Sensor:

⚠️ Check Engine Light (CEL) with codes like:

• P0193 (Rail Pressure Sensor Circuit High)

• P0192 (Rail Pressure Sensor Circuit Low)

• P0087 (Low Fuel Rail Pressure)

• Hard starting, rough idle, or power loss

• Engine stalling or going into limp mode

Replacement Notes:

1. Location:

   • On the fuel rail (near the high-pressure pump).

   • 5.9L (2003–2007): Passenger side of the engine, near the CP3 pump.

   • 6.7L (2007+): Similar location but may vary slightly.

2. Installation:

   • Disconnect the battery before replacement.

   • Use a flare nut wrench to avoid stripping the sensor.

   • Torque to spec (~25–30 ft-lbs)—overtightening can damage the rail.

   • Replace O-rings (if included) to prevent leaks.

Cross-Reference/OEM Alternatives:

• Cummins OEM: 5297641, 4084185, 5299719 (updated)

• Aftermarket:

  • Standard Motor Products PR404

  • Dorman 904-209

  • Bosch 0261230094

Does It Fit a 2003–2007 Dodge Ram 5.9L?

✅ Yes, but verify your exact engine & emissions tier (some early 5.9L may use a different sensor).

⚠️ If you’re getting rail pressure codes, also check:

• Fuel pressure relief valve

• CP3 pump health

• Fuel filter/clogged lines