Cummins 5297640 — Genuine Fuel Rail Pressure Sensor

MPN: 5297640  |  Also Known As: FRP sensor, rail pressure transducer  |  Common Cross-Refs (ID): Cummins 5261237, 4937283, 4930429; Mopar 68002436AA/AB/AC/AD; Bosch 0 281 006 327

Restore accurate rail pressure feedback on your common-rail Cummins. The genuine Cummins 5297640 fuel rail pressure sensor is the OE unit for 2007.5–2012 Ram 2500/3500/4500/5500 6.7L and select ISB/QSB 6.7 engines. Designed to OEM signal accuracy and sealing specs for reliable drivability and clean diagnostics.

Features & Benefits

• OE signal accuracy for precise injection control and smoother operation.
• Direct-fit to the rear of the high-pressure fuel rail; plug-and-play 3-pin connector.
• Fixes common symptoms such as hard starts, low power, excessive smoke, and P0193/P0191 faults (after wiring/line checks).
• Built to Cummins specs for durability in heat, vibration, and fuel exposure.

Verified Fitment (Automotive)

Industrial/Off-Highway: Cummins catalogs 5297640 as a Pressure Sensor used primarily on EPA13 6.7L ISB/QSB engines—verify by ESN for equipment engines.

Specifications

• Type: Fuel rail pressure sensor (transducer)
• OE Part Number: 5297640
• Connector: 3-pin, duty to ECM (5V supply/ground/signal)
• Thread: M18 x 1.5 (knife-edge/metal seal to rail)
• Location: End/rear of high-pressure fuel rail
• Quantity Required: 1 per engine

Often Paired With

• Fuel rail pressure relief valve: Cummins 4938005 / Mopar 68005441AA (Bosch 1110010013)
• Fuel Control Actuator (FCA/MPROP): Mopar 68005241AA (on CP3)
• Rail pressure sensor pigtail: Fleece FPE-HAR-RP-PT (repair connector)

What’s In The Box

• (1) Genuine Cummins Fuel Rail Pressure Sensor (5297640)

Installation Tips

• Depressurize fuel system; keep the port clean to prevent contamination.
• Inspect harness and repair pigtail if brittle or oil-soaked.
• Torque to spec; clear codes and verify commanded vs. actual rail pressure.
• If codes persist, smoke-test for leaks and verify FCA and relief valve operation.

FAQ

WILL THIS FIT MY 2007.5–2012 6.7L CUMMINS RAM?

Yes—5297640 is the OE rail pressure sensor for 2007.5–2012 Ram 2500/3500 and many 4500/5500 cab-&-chassis applications.

WHAT ABOUT 2013–2018 TRUCKS?

Most 2013–2018 applications use 4306993 / 68210175AA. Some cab-&-chassis overlap exists—confirm by VIN/ESN.

WHERE IS THE SENSOR LOCATED?

At the end/rear of the fuel rail on the passenger side.

WHAT TROUBLE CODES CAN A BAD SENSOR TRIGGER?

Commonly P0193 and sometimes P0191, along with drivability issues (hard start, low power).

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 5297640 with factory calibration.