Hella 009107421 Engine Coolant Temperature Sensor

Reliable Engine Coolant Temperature Sensor for Volkswagen Models

The Hella 009107421 Engine Coolant Temperature Sensor is designed to provide accurate temperature readings for Volkswagen vehicles including the Cabrio, Golf, Jetta, and Passat. This sensor ensures optimal engine performance by monitoring coolant temperature and helping regulate engine management systems.

• Colour: Black with yellow colour coding for easy identification
• Mounting Type: Plugged installation for secure fitment
• Number of Connectors: 4-pin connector for reliable electrical connection
• Rated Voltage: 12V, compatible with standard vehicle electrical systems
• Sensor Type: NTC (Negative Temperature Coefficient) sensor for precise temperature measurement
• Includes retaining ring and seal for proper sealing and durability

About the Hella Brand Line

The Hella brand line is known for producing high-quality automotive sensors and electrical components. This Engine Coolant Temperature Sensor from Hella is engineered to meet OEM specifications, ensuring compatibility and performance for Volkswagen vehicles. The inclusion of a retaining ring and seal highlights Hella's attention to detail in providing durable and reliable parts.

Product Details and Functionality

The Hella 009107421 sensor monitors the temperature of the engine coolant by using an NTC sensor element that changes resistance with temperature variations. The black sensor body with yellow colour coding matches the original part, facilitating straightforward replacement. Its 4-pin connector ensures stable communication with the vehicle’s engine control unit (ECU). The plugged mounting type allows for a secure and straightforward installation, while the included seal and retaining ring help prevent leaks and maintain system integrity.

Common Issues Addressed by This Sensor

• Inaccurate engine temperature readings causing poor fuel efficiency
• Engine overheating due to faulty coolant temperature monitoring
• Check engine light triggered by sensor failure
• Erratic engine performance related to temperature sensor faults
• Cooling system malfunctions linked to sensor leaks or poor sealing

Installation Notes and Tips

Ensure the engine is cool before attempting installation to avoid injury. Disconnect the battery to prevent electrical shorts. Remove the old sensor carefully, noting the orientation and connector type. Install the Hella 009107421 sensor with the included retaining ring and seal to ensure a proper fit and leak-free operation. Reconnect the 4-pin connector securely and verify sensor operation through diagnostic tools if available.

Quality Assurance and Warranty

Hella parts are manufactured to meet strict quality standards and OEM specifications. The 009107421 Engine Coolant Temperature Sensor undergoes rigorous testing to ensure durability and accurate performance. While specific warranty details may vary, Hella typically offers coverage against manufacturing defects, providing confidence in the sensor’s reliability for Volkswagen Cabrio, Golf, Jetta, and Passat models.