Description
The PAI 050670 is an aftermarket fuel/oil temperature sensor for Cummins L10, M11, N14, ISM, and ISX engines — a multi-use thermistor sensor that supplies the ECM with fuel rail or engine-oil temperature data. 2-pin oval connector with a 9/16-18 mounting thread. Direct replacement for Cummins 3865312, 3865323, 3613114, 3613604, 3613819, and 3081311.
Signs You Need a New Temperature Sensor
- Check engine light with fuel-temp or oil-temp sensor fault codes
- Erratic fuel-temperature or oil-temperature readings on the dash
- Engine derate or limp-mode triggered by sensor circuit faults
- Hard starting or rough idle correlated with cold/hot conditions
- Visible damage or corrosion at the sensor body or connector pins
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 050670 |
| Part Type | Fuel/Oil Temperature Sensor |
| Engine Compatibility | Cummins L10, M11, N14, ISM, ISX |
| Connector | 2-Pin Oval |
| Thread | 9/16-18 |
| Color/Finish | Black / Gold |
Cross References
This temperature sensor replaces or is equivalent to the following part numbers:
- Cummins: 3865312, 3865323, 3613114, 3613604, 3613819, 3081311
Applications
This temperature sensor fits the following engines:
- Cummins L10 (mechanical and electronic)
- Cummins M11 (Celect / Celect Plus)
- Cummins N14 (Celect / Celect Plus)
- Cummins ISM (early years)
- Cummins ISX / Signature 600 (early years, fuel/oil temp circuit)
Representative platforms running these engines include Freightliner FLD/Classic/Century/Columbia, Kenworth T600/T800/W900, Peterbilt 379/378/385/387, International 9200/9400/9900, and Western Star 4900 from the early 1990s through the mid-2000s.
Verify the specific sensor location (fuel rail vs oil gallery) and connector configuration on your engine harness before ordering — Cummins used the same 050670 sensor body in multiple circuits.
