Product Description
MOPAR 5143781AB FUEL RAIL PRESSURE SENSOR PIGTAIL FOR 03-12 DODGE RAM WITH 5.9L/6.7L CUMMINS ENGINE
Restore proper fuel system communication and eliminate unreliable sensor connection issues with the genuine Mopar 5143781AB Fuel Rail Pressure Sensor Pigtail for 2003-2012 Dodge Ram trucks equipped with the legendary 5.9L or 6.7L Cummins diesel engine. This OEM replacement connector is designed to repair damaged, brittle, melted, or corroded wiring commonly found around the fuel rail pressure sensor on high-mileage diesel applications.
The Mopar 5143781AB fuel rail pressure sensor pigtail provides a secure factory-style electrical connection between the engine harness and the fuel rail pressure sensor, helping maintain accurate fuel pressure readings critical for proper injection timing, engine performance, fuel economy, and drivability. Faulty sensor wiring can cause hard starts, rough idle, reduced power, check engine lights, or fuel pressure-related diagnostic trouble codes.
Manufactured to strict Mopar OEM standards, this direct-fit 3-way connector repair pigtail is built using heat-resistant materials and OEM-style terminals for long-term reliability in demanding diesel engine environments. Unlike universal wiring repairs, this genuine Mopar connector maintains factory fitment and proper signal integrity.
This updated pigtail replaces previous part number 5143781AA and is engineered specifically for Cummins-powered Ram trucks requiring OEM-quality fuel system wiring repairs.
FAQ
What does the fuel rail pressure sensor pigtail do?
This connector links the fuel rail pressure sensor to the engine wiring harness so the ECM can accurately monitor and control fuel pressure.
What are common signs of a bad fuel rail pressure sensor connector?
Symptoms can include hard starting, rough idle, reduced engine performance, intermittent fuel pressure codes, limp mode, or check engine lights.
Is this a genuine Mopar OEM part?
Yes. The 5143781AB is a genuine OEM Mopar fuel rail pressure sensor repair connector designed for factory fitment and durability.
Will this fit both 5.9L and 6.7L Cummins engines?
Yes. This pigtail is compatible with select 2003-2012 Dodge Ram applications equipped with either the 5.9L or 6.7L Cummins diesel engine.
Does this replace the older 5143781AA connector?
Yes. Mopar 5143781AB is the updated replacement for previous part number 5143781AA.
Vehicle Fitment
- 2003 Dodge Ram 2500 5.9L Cummins Diesel
- 2004 Dodge Ram 2500 5.9L Cummins Diesel
- 2005 Dodge Ram 2500 5.9L Cummins Diesel
- 2006 Dodge Ram 2500 5.9L Cummins Diesel
- 2007 Dodge Ram 2500 5.9L Cummins Diesel
- 2007.5 Dodge Ram 2500 6.7L Cummins Diesel
- 2008 Dodge Ram 2500 6.7L Cummins Diesel
- 2009 Dodge Ram 2500 6.7L Cummins Diesel
- 2010 Dodge Ram 2500 6.7L Cummins Diesel
- 2011 Ram 2500 6.7L Cummins Diesel
- 2012 Ram 2500 6.7L Cummins Diesel
- 2003 Dodge Ram 3500 5.9L Cummins Diesel
- 2004 Dodge Ram 3500 5.9L Cummins Diesel
- 2005 Dodge Ram 3500 5.9L Cummins Diesel
- 2006 Dodge Ram 3500 5.9L Cummins Diesel
- 2007 Dodge Ram 3500 5.9L Cummins Diesel
- 2007.5 Dodge Ram 3500 6.7L Cummins Diesel
- 2008 Dodge Ram 3500 6.7L Cummins Diesel
- 2009 Dodge Ram 3500 6.7L Cummins Diesel
- 2010 Dodge Ram 3500 6.7L Cummins Diesel
- 2011 Ram 3500 6.7L Cummins Diesel
- 2012 Ram 3500 6.7L Cummins Diesel
- 2008 Ram 4500 6.7L Cummins Diesel
- 2009 Ram 4500 6.7L Cummins Diesel
- 2010 Ram 4500 6.7L Cummins Diesel
- 2011 Ram 4500 6.7L Cummins Diesel
- 2012 Ram 4500 6.7L Cummins Diesel
- 2008 Ram 5500 6.7L Cummins Diesel
- 2009 Ram 5500 6.7L Cummins Diesel
- 2010 Ram 5500 6.7L Cummins Diesel
- 2011 Ram 5500 6.7L Cummins Diesel
- 2012 Ram 5500 6.7L Cummins Diesel
Fits Select Trims Including:
ST, SLT, SXT, Big Horn, Lone Star, Laramie, Sport, Tradesman, Power Wagon, Chassis Cab Models
Specifications for Mopar 5143781AB
| Category | Details |
|---|---|
| Part Number | 5143781AB |
| Brand | Mopar (OEM) |
| Product Type | Fuel Rail Pressure Sensor Pigtail |
| Engine Compatibility | 5.9L Cummins Diesel / 6.7L Cummins Diesel |
| Vehicle Fitment | 2003-2012 Dodge Ram & Ram 2500/3500/4500/5500 |
| Function | Connects the fuel rail pressure sensor to the engine wiring harness for accurate fuel pressure monitoring |
| Connector Style | OEM 3-Way Sensor Connector |
| Installation Type | Direct OEM Wiring Repair Replacement |
| Construction | Heat-Resistant OEM Wiring and Connector Materials |
| Sensor Compatibility | Compatible with OEM Cummins Fuel Rail Pressure Sensors |
| Replaces Part Numbers | 5143781AA |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Weight | Approx. 0.5 lbs |
| Shipping Dimensions | Approx. 9" x 2" x 11" |
| Shipping | Standard ground shipping available |
| Operating Benefits | Restores reliable sensor communication, eliminates intermittent fuel pressure faults, improves drivability, supports proper injection system performance |
| Prop 65 | WARNING: Cancer and reproductive harm – www.P65Warnings.ca.gov |
| Condition | New |
