Walker Engine Coolant Temperature Sensor 01-10 GM 6.6L Duramax LB7/LLY/LBZ/LMM

Is your truck running rich, hard starting, or showing inconsistent temperature readings? The Walker Engine Coolant Temperature (ECT) Sensor restores the accurate coolant data your ECM depends on to manage fueling, fan operation, and overall engine performance. This sensor continuously monitors coolant temperature and sends that information to the computer, which can adjust fuel delivery and engine timing in real time. When it starts to fail, you may see poor fuel economy, a rough idle, overheating, or even a check engine light. Replacing it with this direct-fit solution restores stable temperature readings, smoother operation, and reliable performance, whether you're daily driving or towing heavy loads. Built for long-lasting durability in harsh engine environments, this sensor is manufactured from high-quality, heat-resistant materials that withstand constant thermal cycling, vibration, and exposure to coolant. Its precision thermistor element provides accurate resistance changes with temperature, ensuring a consistent signal output to the ECM over time. Engineered to meet OE specifications and fully tested for fit, form, and function, it delivers dependable reliability, easy installation, and consistent performance in demanding diesel and gas applications.