Standard Ignition TX139 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for OE-Style Cooling Control

The Standard Ignition TX139 engine coolant temperature sensor provides a direct-fit replacement for vehicles that rely on accurate coolant temperature input for engine management and gauge operation. Built with a brass body, rectangular plug-in connector, and bolt-on attachment method, it supports dependable electrical contact in the cooling system.

Compatible with select Ford, Jaguar, Land Rover, Lincoln, Mazda, and Mercury applications, including Ford Escape, Ford Fusion, Jaguar XF, and Jaguar F-Type models, the TX139 is a practical choice when diagnosing temperature-related drivability or cooling concerns. This part cross-references Beck/Arnley 158-1443 and Delphi TS10338 for the same application.

Key Features

• Engine coolant temperature sensor for cooling system and engine control input
• Brass sensor body for durable service in coolant environments
• Bolt-on attachment method for secure mounting
• Female rectangular plug-in connector for straightforward electrical connection
• 2 blade terminals with male terminal ends
• Standard Ignition TX139 replacement part number

Detailed Description

The Standard Ignition TX139 is an engine coolant temperature sensor used to report coolant temperature to the vehicle’s control system. Accurate temperature feedback is important for fuel delivery, idle quality, cooling fan strategy, and temperature gauge operation. This sensor is listed for a wide range of applications, including 2012-2015 Ford Focus located on the coolant crossover tube, 2003-2005 Ford Taurus located on the coolant crossover tube, 2019-2024 Jaguar XF located on the radiator hose, and 2021-2022 Jaguar F-Pace located on the radiator hose. It also serves select Jaguar XJ, XJR, XFR, XK, XKR, XKR-S, Land Rover Range Rover Evoque, Lincoln MKZ, Mazda 6, Mazda MPV, Mercury Milan, Mercury Mariner, Mercury Sable, and Ford Escape and Fusion applications. The TX139 part number is also referenced in interchange listings for related OE-style replacements.

What It Helps Address

• Incorrect coolant temperature readings
• Illuminated temperature-related warning lights
• Poor cold-start or warm-up fuel control
• Cooling fan operation concerns tied to temperature input
• Gauge or sensor signal irregularities

Installation Notes and Tips

Verify connector shape, terminal style, and mounting location before installation. This sensor uses a female rectangular plug-in connector and bolt-on attachment method, so the harness and mounting point should match the original configuration. Confirm the application-specific location, such as radiator hose or coolant crossover tube, on the vehicle before replacement. For fitment, the TX139 is listed for 2001-2024 model years across the supported Ford, Jaguar, Land Rover, Lincoln, Mazda, and Mercury applications.

Quality Assurance

Standard Ignition supplies this coolant temperature sensor as an OE-style replacement part built to match the listed application requirements for connector type, terminal layout, and mounting style.