HomeBelts and Cooling > SensorsBeck Arnley 158-0789 Engine Coolant Temperature Sensor
Part #: 158-0789

Beck Arnley 158-0789 Engine Coolant Temperature Sensor

⚙️ 25 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Subaru, Legacy, Forester, Impreza, and SVX
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Reliable Engine Coolant Temperature Sensor for Subaru Vehicles

The Beck Arnley 158-0789 Engine Coolant Temperature Sensor is designed specifically for Subaru Forester, Impreza, and Legacy models. This sensor provides accurate temperature readings to help maintain optimal engine performance and prevent overheating.

  • Compatible with Subaru Forester, Impreza, and Legacy models
  • OEM-quality replacement part number 158-0789
  • Ensures precise engine coolant temperature monitoring
  • Durable construction for long-lasting performance
  • Direct fit for easy installation without modifications

Product Details and Compatibility

The Beck Arnley 158-0789 sensor is engineered to meet or exceed original equipment specifications for engine coolant temperature sensors. It is compatible with multiple Subaru models, including the Forester, Impreza, and Legacy, ensuring proper fit and function. This sensor plays a critical role in the vehicle’s cooling system by providing real-time temperature data to the engine control unit (ECU), which adjusts fuel injection and ignition timing accordingly.

Purpose and Common Issues Addressed

  • Prevents engine overheating by monitoring coolant temperature accurately
  • Helps maintain efficient fuel consumption and engine performance
  • Resolves erratic temperature gauge readings
  • Eliminates engine stalling or rough idling caused by faulty temperature data
  • Prevents check engine light triggers related to coolant temperature sensor faults

Installation Notes and Tips

  • Ensure the engine is cool before beginning installation to avoid burns
  • Disconnect the battery to prevent electrical shorts during replacement
  • Locate the existing sensor on the engine block or cylinder head as per vehicle manual
  • Use appropriate tools to remove the old sensor and install the Beck Arnley 158-0789 sensor securely
  • Check for coolant leaks after installation and clear any diagnostic trouble codes

Quality Assurance and Warranty

Beck Arnley parts are manufactured to meet strict quality standards, providing reliable performance and durability. The 158-0789 Engine Coolant Temperature Sensor undergoes rigorous testing to ensure compatibility and function with Subaru Forester, Impreza, and Legacy models. This part is backed by Beck Arnley’s limited warranty, covering defects in materials and workmanship under normal use.

This part fits 25 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1999SubaruLegacy2.2LH4N/A
1999SubaruLegacy2.5LH4N/A
1998SubaruForester2.5LH4N/A
1998SubaruImpreza2.5LH4N/A
1998SubaruImpreza2.2LH4N/A
1998SubaruLegacy2.5LH4N/A
1998SubaruLegacy2.2LH4N/A
1997SubaruImpreza2.2LH4N/A
1997SubaruImpreza1.8LH4N/A
1997SubaruLegacy2.5LH4N/A
1997SubaruLegacy2.2LH4N/A
1996SubaruImpreza1.8LH4N/A
1996SubaruImpreza2.2LH4N/A
1996SubaruLegacy2.5LH4N/A
1996SubaruLegacy2.2LH4N/A
1995SubaruImpreza1.8LH4N/A
1995SubaruImpreza2.2LH4N/A
1995SubaruLegacy2.2LH4N/A
1994SubaruImpreza1.8LH4N/A
1994SubaruLegacy2.2LH4N/A
1993SubaruImpreza1.8LH4N/A
1993SubaruLegacy2.2LH4N/A
1992SubaruLegacy2.2LH4N/A
1991SubaruLegacy2.2LH4N/A
1990SubaruLegacy2.2LH4N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.