Facet 7.3139 Engine Coolant Temperature Sensor

Reliable Engine Coolant Temperature Sensor for Mercedes-Benz Models

The Facet 7.3139 Engine Coolant Temperature Sensor is designed to provide accurate temperature readings for your Mercedes-Benz 300D, 300SD, 350SD, 350SDL, and S350 models. This sensor helps maintain optimal engine performance by monitoring coolant temperature and relaying critical data to the engine control system.

• Compatible with Mercedes-Benz 300D, 300SD, 350SD, 350SDL, and S350
• OEM-quality replacement part number 7.3139
• Engine coolant temperature sensor for precise temperature monitoring
• Durable construction for reliable long-term operation
• Direct fit for easy installation without modifications

Product Details and Functionality

The Facet 7.3139 sensor is engineered to measure the temperature of the engine coolant accurately and transmit this information to the vehicle’s engine control unit (ECU). This data is essential for regulating fuel injection, ignition timing, and cooling fan operation. Designed specifically for Mercedes-Benz models including the 300D, 300SD, 350SD, 350SDL, and S350, this sensor ensures compatibility and reliable performance. The part number 7.3139 corresponds to a direct replacement sensor that meets the original equipment specifications.

Common Applications and Problem Resolution

• Prevents engine overheating by providing accurate coolant temperature data
• Helps avoid poor fuel economy caused by incorrect temperature readings
• Resolves issues with erratic temperature gauge behavior
• Eliminates engine stalling or rough idling related to faulty temperature sensors
• Supports proper operation of cooling fans and emission controls

Installation Notes and Tips

Installation of the Facet 7.3139 Engine Coolant Temperature Sensor is straightforward with a direct fit design for Mercedes-Benz 300D, 300SD, 350SD, 350SDL, and S350 models. Before installation, ensure the engine is cool to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old sensor carefully to avoid damaging the mounting threads. Apply a suitable thread sealant if recommended by the vehicle manufacturer. After installation, verify sensor operation by checking the temperature gauge and engine performance.

Quality Assurance and Warranty Information

Facet manufactures the 7.3139 Engine Coolant Temperature Sensor to meet strict quality standards, ensuring reliable and consistent performance. This sensor undergoes rigorous testing to confirm durability and accuracy. While specific warranty details may vary, Facet typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or your supplier for exact warranty terms.