Genuine OEM Volkswagen Coolant Temperature Sender, part number 03N919501A. This sensor accurately measures the temperature of the engine coolant, providing critical data to the engine control unit for optimal engine performance and fuel efficiency. It features a brass probe and an integrated O-ring for a secure seal. Measuring approximately 83mm in length, this sender is designed for precise readings and reliable operation. Choosing a genuine OEM sensor ensures correct calibration and signal characteristics for accurate engine management.