Walker Products 211-1040 Engine Coolant Temperature Sensor ECT Sensor

The Walker Products 211-1040 is a direct-fit replacement Engine Coolant Temperature Sensor (ECT Sensor) engineered to restore accurate coolant monitoring to your vehicle's engine management system. The sensor measures coolant temperature through changing electrical resistance and continuously transmits that data to the onboard Engine Control Module (ECM), which uses the signal to optimize fuel delivery, ignition timing, cold start enrichment, and cooling fan operation.

Built to match OE specifications for resistance values, thermal response curves, and signal output, this sensor integrates seamlessly with factory wiring and electronics without any modifications. Its durable, heat-resistant construction is designed to withstand prolonged exposure to pressurized coolant, engine vibration, and extreme thermal cycling.

Common Symptoms of a Failing ECT Sensor:

• No start or hard start condition
• Engine flooding or rich-running fuel mixture
• Illuminated check engine light (steady)
• Poor fuel economy

Key Features:

• Direct-fit OE replacement — no cutting, splicing, or modifications required
• Engineered to meet or exceed OEM specifications for fit, form, and function
• Matched resistance values and thermal response for accurate ECM signal
• Durable, heat- and corrosion-resistant housing built for high-vibration environments
• Manufactured by Walker Products, an ISO 9001/IATF 16949 certified company
• Sensor-only replacement part

Walker Products has been a trusted supplier to the global automotive aftermarket since 1946. As one of the largest privately owned manufacturers of engine management sensors and fuel system components, Walker Products engineers and tests every part to deliver reliable OE-level fit and performance. Recommended sensor service interval is every 25,000–35,000 miles.