Product Description
CUMMINS 2872858 OEM EXHAUST GAS TEMPERATURE SENSOR (EGT) – ISB 6.7L (2007.5–2025)
The genuine CUMMINS 2872858 exhaust gas temperature (EGT) sensor is a critical emissions and engine-protection component on all 2007.5–2025 6.7L ISB Cummins engines. This OEM sensor monitors exhaust temperatures to protect the turbocharger, DPF, SCR, and combustion efficiency. A failing EGT sensor can cause derates, excessive soot accumulation, inaccurate turbo control, failed regens, and Check Engine lights. Replacing it with a real Cummins-built sensor restores proper emissions operation and safeguards your 6.7L against temperature-related failures.
Designed for accuracy and durability, this sensor threads directly into the factory exhaust locations and integrates seamlessly with the ECU and aftertreatment system. Many trucks experiencing regen issues, poor mileage, or high EGT codes benefit immediately from installing a new Cummins 2872858.
Key Features
- Genuine Cummins OEM EGT sensor for dependable accuracy and long service life.
- Direct-fit replacement for ISB 6.7L applications from 2007.5 through 2025.
- Supports proper DPF regen function and temperature-based ECU calculations.
- Prevents turbocharger overheating by providing accurate exhaust temperature data.
- Plug-and-play connection for fast installation with no modifications.
Fitment Details
- Engine: Cummins ISB 6.7L
- Years: 2007.5–2025
- Applications: Dodge/Ram 2500–5500, chassis cabs, medium-duty trucks, industrial ISB platforms, and other 6.7L variants (verify via ESN).
- Notes: Multiple EGT sensors may be present (pre-turbo, post-turbo, pre-DPF, post-DPF). Confirm sensor location by ESN.
Cross-Reference & Companion Cummins Parts
Pair CUMMINS 2872858 with other emissions and sensor components for a full OEM repair:
- CUMMINS 2872946 EXHAUST TEMPERATURE SENSOR – often used in additional EGT sensor locations.
- CUMMINS 4326869 NOx SENSOR – essential for SCR performance and emissions compliance.
- CUMMINS 5264570 DPF PRESSURE SENSOR – works with EGT readings to control regen cycles.
- VIEW ALL GENUINE CUMMINS PARTS
Common Cummins cross-reference numbers include: 2872858, 2872395, 2872394 (verify by VIN/ESN).
Installation Notes
- Pre-soak old EGT sensors to avoid thread damage from heat seizure.
- Verify connector cleanliness to prevent voltage signal issues.
- Clear fault codes and perform a regen (if required) after replacement.
- Always torque to Cummins specification for best longevity.
Specifications for cummins 2872858
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 2872858 |
| Alternate Part Numbers | 2872395, 2872394 (verify by ESN) |
| Function | Exhaust Gas Temperature Sensor (EGT) |
| Engine Compatibility | ISB 6.7L (2007.5–2025) |
| Vehicle Fitment | Ram 2500–5500, chassis cabs, medium-duty and industrial ISB platforms |
| UPC | 193468696089 |
| GTIN | 193468696089 |
| Shipping Weight | Approx. 0.35 lb |
| Shipping Method | Standard ground; expedited available |
| E-Codes / Emissions | Emissions critical; required for DPF and SCR temperature management |
| Prop 65 Warning | WARNING: This product may expose you to chemicals known to the State of California to cause cancer and reproductive harm. Visit www.P65Warnings.ca.gov. |
| Country of Origin | As labeled by Cummins (varies by batch) |
Frequently Asked Questions
HOW DO I KNOW IF MY 2872858 EGT SENSOR IS FAILING?
Common symptoms include inaccurate temperature readings, failed regens, turbo derate, DPF restriction messages, CEL codes for high/low EGT, and poor throttle response.
HOW MANY EGT SENSORS DOES MY 6.7 CUMMINS HAVE?
Most ISB engines use multiple sensors (pre-turbo, post-turbo, pre-DPF, post-DPF). This 2872858 fits specific locations—verify by ESN to ensure correct placement.
IS THIS SENSOR REQUIRED FOR PROPER REGEN FUNCTION?
Yes. Incorrect EGT readings can prevent or interrupt regen cycles and may trigger derate conditions.
CAN I USE AFTERMARKET SENSORS INSTEAD OF OEM?
We strongly recommend OEM only. Aftermarket EGT sensors often cause incorrect readings and regen failures. The genuine Cummins 2872858 ensures correct ECU data.
DO I NEED TO CLEAR CODES AFTER INSTALLATION?
Yes. Clear codes and verify regen functionality after replacing any emissions sensor.
