Standard Ignition TX138 Engine Coolant Temperature Sensor - Right

Engine Coolant Temperature Sensor for Ford and Mazda

Standard Ignition TX138 is an engine coolant temperature sensor built for direct replacement in a wide range of Ford, Mazda, Mercury, and Land Rover applications. It uses a bolt-on attachment with a rectangular female connector and two male blade terminals for a straightforward OE-style connection.

Compatible With applications such as 2006-2009 Ford Fusion, 2004-2010 Mazda 3, and 2006-2015 Mazda MX-5 Miata, this sensor supports accurate coolant temperature reporting for engine management and gauge operation. The Standard Ignition TX138 is also used across select Ford Ranger, Mazda 6, and Mercury Milan fitments.

Key Features

• Standard Ignition TX138 engine coolant temperature sensor
• Bolt-on mounting for direct replacement fitment
• Rectangular female connector with 2 blade terminals
• OE-style electrical interface for supported Ford, Mazda, Mercury, and Land Rover vehicles
• Cross-references Beck/Arnley 158-0782 and Delphi TS10287 for the same application

Detailed Description

This engine coolant temperature sensor monitors coolant temperature and sends that signal to the vehicle control system. On supported vehicles such as the Ford Explorer, Mazda 3 Sport, and Mercury Mountaineer, accurate temperature input helps the engine computer manage fuel delivery, idle strategy, and cooling fan operation. Standard Ignition TX138 is a practical replacement for vehicles that use the listed connector and mounting style, including many 1995-2017 Ford and Mazda platforms.

Use this part when servicing cooling-system sensor faults on applications including 2013-2017 Ford Ranger, 2011-2013 Mazda 3, 2007-2012 Mazda CX-7, and 2006-2009 Mercury Milan. The part number TX138 is also referenced in aftermarket catalogs for related service replacements.

What It Helps Address

• Incorrect coolant temperature readings
• Illuminated engine warning lights tied to sensor faults
• Rough idle or fuel-control issues related to temperature input
• Cooling fan operation problems caused by inaccurate sensor data
• Hard starting or poor warm-up behavior on affected vehicles

Installation Notes and Tips

Confirm connector shape, terminal style, and mounting location before installation. Fitment notes show some applications located on the cylinder head, engine, or radiator hose, so verify the original sensor position on your vehicle before replacement. For body fitment, this part fits 2013-2017 Ford Ranger, 2006-2009 Ford Fusion, 2004-2010 Mazda 3, 2006-2015 Mazda MX-5 Miata, and other listed applications exactly as cataloged.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical and engine management service parts. TX138 is built to match the listed OE-style connector and terminal configuration for the supported applications.