Cummins QSB 6.7L, B6.7, ISB Temp Sensor 2013-2018: OEM 5461634

Precise Temperature Sensing for Cummins QSB 6.7L, B6.7 & ISB Engines (2013–2018)

What is it?
The Cummins QSB 6.7L, B6.7, ISB Temp Sensor (2013–2018), identified by OEM part number 5461634, is a thermal feedback component designed for use on Cummins QSB 6.7-liter, B6.7, and ISB diesel engines produced between 2013 and 2018. Located in the engine or exhaust system, this sensor monitors temperature and relays that data to the engine control unit (ECU). The ECU then uses this information to adjust combustion timing, emissions aftertreatment behavior, and other engine controls.

Why choose this Temp Sensor?
This temperature sensor is manufactured to meet Cummins’ original specifications for these engine families, ensuring accurate and dependable readings. When a temp sensor starts to fail or sends inaccurate heat data, the ECU may make less-than-ideal adjustments to fuel delivery, regeneration timing, or emissions control strategies. That can lead to warning indicators, inconsistent engine responses, or inefficient aftertreatment operation. Using the correct OEM-specified sensor helps maintain accurate thermal feedback and smoother system coordination.

Key Benefits
✅ Designed for Cummins QSB 6.7L, B6.7 & ISB engines (2013–2018)
✅ Provides reliable temperature feedback to the ECU
✅ Supports optimized combustion and emissions control strategies
✅ Direct replacement fit — no modifications required
✅ Built for heavy-duty operating temperatures and duty cycles

Applications
This temp sensor fits a broad range of medium- and heavy-duty vehicles and equipment powered by Cummins QSB 6.7L, B6.7, or ISB engines from 2013 through 2018. Typical uses include commercial trucks, construction machinery, agricultural equipment, generators, and industrial platforms where engine and aftertreatment systems depend on accurate temperature monitoring.

Installation Notes
Before servicing, make sure the engine and exhaust system have fully cooled. Locate the existing temperature sensor, disconnect its electrical connector, and remove it from its mounting location. Inspect the wiring harness and sensor port for signs of soot buildup, corrosion, or damage before installing the replacement. Thread in the new sensor and torque to the manufacturer’s specification, then reconnect the electrical harness. After installation, clear any stored fault codes and verify correct temperature behavior with diagnostic tools.

Final Thoughts
If your Cummins-equipped machine is showing temperature-related fault codes, erratic combustion behavior, or inconsistent emissions feedback, replacing a failing temp sensor with the correct OEM-specified part can help restore accurate monitoring and smoother overall performance. The Cummins QSB 6.7L, B6.7, ISB Temp Sensor (OEM 5461634) plays a key role in dependable engine and emissions system coordination across varied duty cycles.