HomeBelts and Cooling > SensorsBeck Arnley 158-1690 Engine Coolant Temperature Sensor
Part #: 158-1690

Beck Arnley 158-1690 Engine Coolant Temperature Sensor

⚙️ 16 vehicles fit this part
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Select your vehicle to confirm fitment
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Fiat, 500, 500L, and 500X
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Temperature Sensor for Fiat 500 Series

The Beck Arnley 158-1690 Engine Coolant Temperature Sensor is designed specifically for Fiat 500, 500L, and 500X models. This sensor provides accurate temperature readings to help maintain optimal engine performance and prevent overheating.

  • Compatible with Fiat 500, 500L, and 500X vehicles
  • OEM-quality replacement part number 158-1690
  • Engine coolant temperature sensor ensures precise temperature monitoring
  • Durable construction for long-lasting performance
  • Direct fit for easy installation without modifications

Product Details and Specifications

The Beck Arnley 158-1690 sensor is engineered to meet or exceed original equipment specifications for engine coolant temperature sensing. It accurately measures the temperature of the engine coolant and sends this data to the vehicle’s engine control unit (ECU). This information is critical for regulating fuel injection, ignition timing, and cooling fan operation. Designed for Fiat 500, 500L, and 500X models, this sensor ensures reliable communication between the engine and its control systems, helping maintain efficient engine operation and emissions control.

Common Applications and Problem Resolution

This engine coolant temperature sensor is used to monitor coolant temperature and provide feedback to the vehicle’s ECU. It helps address several engine performance issues, including:

  • Erratic temperature gauge readings on Fiat 500, 500L, and 500X
  • Engine overheating due to inaccurate coolant temperature data
  • Poor fuel economy caused by incorrect temperature input
  • Check engine light triggered by faulty temperature sensor signals
  • Rough idling or stalling related to temperature sensor failure

Installation Notes and Tips

Installation of the Beck Arnley 158-1690 sensor is straightforward with a direct fit design for Fiat 500, 500L, and 500X models. Before installation, ensure the engine is cool to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old sensor carefully and inspect the mounting area for debris or corrosion. Apply thread sealant if recommended by the vehicle manufacturer. After installation, clear any diagnostic trouble codes and verify sensor operation through the vehicle’s onboard diagnostics.

Quality Assurance and Warranty Information

Beck Arnley parts are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 158-1690 Engine Coolant Temperature Sensor undergoes rigorous testing to comply with OEM specifications. This part is backed by Beck Arnley’s limited warranty, providing coverage against defects in material and workmanship for a specified period. Refer to the warranty documentation for detailed terms and conditions.

This part fits 16 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2019Fiat5001.4LL4N/A
2018Fiat5001.4LL4N/A
2018Fiat500L1.4LL4N/A
2018Fiat500X1.4LL4N/A
2017Fiat5001.4LL4N/A
2017Fiat500L1.4LL4N/A
2017Fiat500X1.4LL4N/A
2016Fiat5001.4LL4N/A
2016Fiat500L1.4LL4N/A
2016Fiat500X1.4LL4N/A
2015Fiat5001.4LL4N/A
2015Fiat500L1.4LL4N/A
2014Fiat5001.4LL4N/A
2014Fiat500L1.4LL4N/A
2013Fiat5001.4LL4N/A
2012Fiat5001.4LL4N/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.