Genuine OEM Volkswagen Thermostat Tube Holding Spring, part number 03H121142. This small, C-shaped plastic component is designed to securely hold and retain the thermostat tube connection, ensuring a leak-free seal within the engine cooling system. It is installed around the thermostat tube joint. Weighing only 0.0025 kg, this spring plays a critical role in maintaining coolant system integrity. Choosing a genuine OEM holding spring guarantees the correct dimensions, material composition, and spring tension for a reliable and durable connection, preventing coolant loss and potential engine damage.

Catalogue entry: SPRING ×2.