HomeBelts and Cooling > SensorsStandard Ignition TX138 Engine Coolant Temperature Sensor - Right
Part #: TX138

Standard Ignition TX138 Engine Coolant Temperature Sensor - Right

Right
⚙️ 115 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, 5, MX-5 Miata, 3, 3 Sport, 6, CX-7, and MX-5
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Reliable Engine Coolant Temperature Sensor for Ford, Mazda, and Land Rover

The Standard Ignition TX138 Engine Coolant Temperature Sensor is designed to provide accurate temperature readings for your vehicle's engine cooling system. Compatible with a range of Ford, Land Rover, Mazda, and Mercury models, this sensor helps maintain optimal engine performance and prevents overheating.

Key Features of the Standard Ignition TX138 Sensor

  • Direct replacement Engine Coolant Temperature Sensor for precise temperature monitoring
  • Compatible with Ford Explorer, Ranger, Fiesta, Fusion, and Mercury Milan among others
  • Works with Mazda 3, 3 Sport, 5, 6, MX-5 Miata, MX-6, and 626 models
  • Also fits Land Rover LR3 and other select models
  • Durable construction designed to withstand engine heat and pressure

Detailed Product Description

The TX138 Engine Coolant Temperature Sensor from Standard Ignition is engineered to meet or exceed OEM specifications for reliable operation. This sensor monitors the temperature of the engine coolant and sends data to the vehicle’s engine control unit (ECU). Accurate temperature readings are critical for regulating fuel injection, ignition timing, and cooling fan operation. The sensor is compatible with multiple vehicle makes and models, including Ford Explorer Sport Trac, Mazda MX-5 Miata, and Land Rover LR3, ensuring broad application coverage. Installation of this sensor helps maintain engine efficiency and prevents damage caused by overheating.

Common Issues Addressed by the TX138 Sensor

  • Engine overheating due to inaccurate coolant temperature readings
  • Poor fuel economy caused by incorrect temperature data
  • Check engine light triggered by faulty temperature sensor signals
  • Erratic engine performance or stalling related to temperature sensor failure
  • Cooling fan malfunction resulting from sensor errors

Installation Notes and Tips

  • Ensure the engine is cool before removing the old sensor to avoid burns
  • Disconnect the battery to prevent electrical shorts during installation
  • Use proper tools to avoid damaging the sensor or mounting threads
  • Apply thread sealant if recommended by the vehicle manufacturer
  • Verify sensor connector is securely attached after installation

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The TX138 Engine Coolant Temperature Sensor is backed by a limited warranty against defects in materials and workmanship, providing confidence in its reliability for your Ford, Mazda, Land Rover, or Mercury vehicle.

BrandStandard Ignition
Part NumberTX138
Attachment MethodBolt On
Connector GenderFemale
Connector ShapeRectangular
Terminal GenderMale
Terminal TypeBlade

This part fits 115 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2017FordRanger2.5LL4N/A
2016FordRanger2.5LL4N/A
2015FordRanger2.5LL4N/A
2015Mazda5N/A
2015MazdaMX-5 MiataN/A
2014FordRanger2.5LL4N/A
2014Mazda5N/A
2014MazdaMX-5 MiataN/A
2013FordRanger2.5LL4N/A
2013Mazda3N/ALocated On Cylinder Head
2013Mazda3 SportN/ALocated On Engine
2013Mazda5N/A
2013Mazda62.5LL4N/A
2013MazdaMX-5 MiataN/A
2012Mazda3N/ALocated On Cylinder Head
2012Mazda3 SportN/ALocated On Engine
2012Mazda52.5LL4N/A
2012Mazda62.5LL4N/A
2012MazdaCX-7N/A
2012MazdaMX-5 MiataN/A
2011Mazda3N/ALocated On Cylinder Head
2011Mazda3 SportN/A
2011Mazda62.5LL4RightLocated On Cylinder Head
2011MazdaCX-72.3LL4N/A
2011MazdaCX-72.5LL4N/A
2011MazdaMX-5N/A
2011MazdaMX-5 MiataN/A
2010Mazda3N/A
2010Mazda3 SportN/A
2010Mazda5N/A
2010Mazda62.5LL4N/A
2010MazdaCX-7N/A
2010MazdaMX-5N/A
2010MazdaMX-5 MiataN/A
2009FordFusion2.3LL4N/A
2009Mazda3N/A
2009Mazda3 SportN/A
2009Mazda5N/A
2009Mazda62.5LL4N/A
2009MazdaCX-7N/A
2009MazdaMX-5N/A
2009MazdaMX-5 MiataN/A
2009MercuryMilan2.3LL4N/A
2008FordFiesta2.0LL4N/A
2008FordFusion2.3LL4N/A
2008Mazda3N/A
2008Mazda5N/A
2008Mazda62.3LL4N/A
2008MazdaCX-7N/A
2008MazdaMX-5N/A
2008MazdaMX-5 MiataN/A
2008MercuryMariner2.3LL4N/A
2008MercuryMilan2.3LL4N/A
2007FordFusion2.3LL4N/A
2007Land RoverLR34.0LV6N/A
2007Mazda3N/A
2007Mazda5N/A
2007Mazda62.3LL4N/A
2007MazdaCX-7N/A
2007MazdaMX-5N/A
2007MazdaMX-5 MiataN/A
2007MercuryMilan2.3LL4N/A
2006FordFusion2.3LL4N/A
2006Land RoverLR34.0LV6N/A
2006Mazda3N/A
2006Mazda5N/A
2006Mazda62.3LL4N/A
2006MazdaMX-5N/A
2006MazdaMX-5 MiataN/A
2006MercuryMilan2.3LL4N/A
2005Land RoverLR34.0LV6N/A
2005Mazda3N/A
2005Mazda62.3LL4N/A
2004Mazda3N/A
2004Mazda62.3LL4N/A
2003FordExplorerN/A
2003FordExplorer SportN/A
2003FordExplorer Sport TracN/A
2003FordRanger2.3LL4N/A
2003Mazda62.3LL4N/A
2002FordExplorerN/A
2002FordExplorer SportN/A
2002FordExplorer Sport TracN/A
2002FordRanger2.3LL4N/A
2002Mazda626N/A
2002MercuryCougar2.0LL4N/A
2001FordExplorerN/A
2001FordExplorer SportN/A
2001FordExplorer Sport TracN/A
2001Mazda626N/A
2001MercuryCougar2.0LL4N/A
2001MercuryMountaineer4.0LV6N/A
2000FordExplorerN/A
2000Mazda626N/A
2000MercuryCougar2.0LL4N/A
2000MercuryMountaineer4.0LV6N/A
1999FordContour2.0LL4N/A
1999FordExplorerN/A
1999Mazda626N/A
1999MercuryCougar2.0LL4N/A
1999MercuryMountaineer4.0LV6N/A
1999MercuryMystique2.0LL4N/A
1998FordExplorerN/A
1998Mazda626N/A
1998MercuryMountaineer4.0LV6N/A
1998MercuryMystique2.0LL4N/A
1997FordExplorerN/ALocated On Radiator Hose
1997FordProbeN/A
1997Mazda626Automatic2.0LL4N/A
1997MazdaMX-6Automatic2.0LL4N/A
1997MercuryMystique2.0LL4N/A
1996FordProbeN/A
1996Mazda626Automatic2.0LL4N/A
1996MazdaMX-6Automatic2.0LL4N/A
1995Mazda626Automatic2.0LL4N/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:

1233117-12962CTS0054378625S1209171-2683739447405793016CTSA134L35G18840TS5750TS5750SBTX138TWT5151WTC1036

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