Product Description
The CUMMINS 4932457 OEM FUEL CONTROL ACTUATOR (FCA) is the genuine electronic metering valve used on the CP3 high-pressure pump for 2003–2007 Dodge Ram 5.9L common-rail Cummins engines. This FCA precisely controls rail pressure so your truck starts clean, idles smooth, and delivers commanded power under load instead of surging, rattling, or derating.
Why Choose Genuine Cummins 4932457 FCA?
- True OEM calibration – matched to Cummins CP3 and ECM strategies for proper commanded vs. actual rail pressure.
- Stable idle & drivability – helps eliminate hunting idle, surging, and random rail pressure spikes or drops.
- Correct cold-start behavior – restores proper fuel metering during cranking and warm-up on 5.9L ISB engines.
- Durable OE construction – quality materials and sealing to handle vibration, heat, and fuel system pressure.
- Direct-fit replacement – bolts to the side of the CP3 pump with OEM connector and hardware, no tuning changes required.
Fitment
- 2003–2007 Dodge Ram 2500, 5.9L ISB common-rail Cummins (CP3 pump)
- 2003–2007 Dodge Ram 3500, 5.9L ISB common-rail Cummins (CP3 pump)
- Also used on Tier 3 Cummins ISB/QSB applications (4.5L/5.9L) – verify by ESN before ordering for industrial or off-highway equipment.
Always confirm by VIN/ESN and existing part number on your CP3 before ordering.
Cross-Reference & Interchange (ID Only)
- Bosch: 0 928 400 666 / 0928400666 (electronic fuel control actuator core)
- Mopar/Chrysler: 05183245AA, 5183245AA (OE Ram service numbers that supersede to Cummins 4932457 in many applications)
- Common aftermarket descriptions: “FCA”, “Fuel Control Actuator”, “Fuel Pressure Regulator”, “MPROP”, “Diesel Fuel Metering Unit”.
Related Genuine Cummins Parts at CPP Diesel
- CUMMINS 4988806 INJECTOR FUEL SUPPLY TUBE (#6) – RAM 5.9L (2003–2007)
- CUMMINS 4988809 #3 FUEL INJECTION LINE (INJECTOR FUEL SUPPLY TUBE) – RAM 5.9L (2003–2007)
- CUMMINS 3959031 ENGINE OIL COOLER – ISB 5.9L (2003–2007)
- CUMMINS 5289557 ENGINE OIL FILTER HOUSING (OIL FILTER HEAD) – RAM 5.9L/6.7L (2003–2018)
Installation & Tech Notes
- Located on the side of the CP3 high-pressure pump, secured by small Allen/torx fasteners.
- Depressurize the fuel system and disconnect batteries before service.
- Inspect the CP3 inlet screen and return fuel for signs of metal contamination; address root-cause issues (failing pump, dirty fuel) before installing a new FCA.
- After installation, clear any rail pressure DTCs and verify commanded vs. actual pressure with a scan tool during idle and road test.
- Always run a fresh quality fuel filter when replacing FCA and follow OEM torque specs.
Specifications for cummins 4932457
| Attribute | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Cummins Part Number | 4932457 |
| Description | Electronic Fuel Control Actuator (FCA) / CP3 Fuel Metering Valve |
| Engine Platforms | 5.9L ISB common-rail (2003–2007 Ram 2500/3500); selected Tier 3 ISB/QSB applications (verify by ESN) |
| Cross-Reference (ID Only) | Bosch 0 928 400 666 / 0928400666; Mopar 05183245AA, 5183245AA |
| GTIN | 0707943751937 |
| UPC | 0707943751937 |
| Shipping Weight | Approx. 0.6 lb (0.27 kg) |
| Typical Package Dimensions | Approx. 5 in × 5 in × 4 in (shipping carton) |
| Electrical Connector | 3-pin, CP3 FCA style (Ram 5.9L common-rail) |
| E-Codes / Emissions | Meets OE emissions calibration when used in original application |
| Country of Origin | As marked on Cummins packaging (commonly Bosch actuator manufactured in Europe) |
| Prop 65 Warning | This product may contain chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information visit www.P65Warnings.ca.gov. |
FAQ
What does the Cummins 4932457 Fuel Control Actuator actually do?
The FCA meters the amount of fuel that enters the CP3’s high-pressure pumping chambers. By opening and closing rapidly, it lets the ECM control rail pressure precisely, which affects starting, idle quality, throttle response, and overall power.
What are common signs that my FCA is failing?
Typical symptoms include hard or no start when hot, rough or hunting idle, surging under light throttle, hesitation on acceleration, excessive rattle, or rail pressure codes related to “too low” or “too high” fuel pressure. Always verify with a scan tool before condemning the FCA.
Is this a genuine Cummins FCA or an aftermarket replacement?
This listing is for a genuine Cummins 4932457 Fuel Control Actuator, not a generic or “will-fit” copy. You receive the Cummins-boxed part designed and validated for ISB common-rail applications.
Do I need any tuning or programming after installing this FCA?
No additional tuning is required when replacing an FCA with the correct Cummins 4932457 unit. Simply install it on the CP3, reconnect the harness, clear any stored DTCs, and verify commanded vs. actual rail pressure with a scan tool during a test drive.
What else should I replace or inspect when installing a new FCA?
At minimum, install a fresh fuel filter and inspect the CP3 and rail for signs of metal debris or contamination. If you are chasing drivability or hard-start issues, it’s also smart to check injector return rates and fuel supply pressure, and consider new injector fuel supply tubes such as the genuine Cummins lines linked above.
Will this FCA fit my industrial or off-highway Cummins ISB/QSB engine?
This part number is used on many Tier 3 ISB/QSB platforms, but Cummins strongly recommends verifying by ESN (Engine Serial Number). If your ESN calls out 4932457, this is the correct FCA; if a different part is listed, match that number instead.
