Temperature Switch 4078749

positive OEM
Cummins
Part# 4078749
note
Engine coolant temperature sensor controlling thermal management circuits.
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Description

The Cummins Temperature Switch (4078749) is an engine coolant temperature sensor that monitors thermal conditions and signals the engine control system to regulate cooling functions. It operates by opening or closing an electrical circuit based on temperature thresholds to maintain safe engine operation and prevent overheating.

Key Specifications

  • Application: Tier 3 5.9L ISB/QSB engines, QSB5.9 CM850, QSB6.7 M CM2250, QSC8.3 CM850, QSM11 CM570
  • Function: Monitors coolant temperature, signals engine control unit
  • Compatibility: Cummins ISB, QSB, QSC, QSM engine series
  • Construction: Metal sensing element, electrical switch mechanism
  • Features: Temperature-activated electrical circuit, vibration resistant, heat tolerant
  • Quality: OEM Cummins part

Shipping Info

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More Information

Current Part# 4078749
Type OEM
Part# variations 4078749 CUM,
4078749CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty