Genuine OEM Volkswagen Sealing Flange with Temperature Sender, part number 03L121131K. This essential component forms a sealed connection within the engine's cooling system, preventing coolant leaks and ensuring proper fluid circulation. It also incorporates a temperature sender, which accurately monitors coolant temperature for the engine management system. Constructed from robust, heat-resistant plastic, it measures approximately 0.18m in length. Opting for a genuine OEM flange guarantees precise fitment, reliable sealing, and accurate sensor readings, crucial for engine health and performance.