Genuine OEM Audi Cooling System Cap, part number 4D0133335. This cap is designed to provide a secure and leak-proof closure for the cooling system reservoir or radiator. It plays a vital role in maintaining the correct pressure within the cooling system, which is essential for efficient engine temperature regulation. Weighing approximately 0.021 kg, it is made from durable plastic. Using a genuine OEM cap ensures proper sealing and pressure regulation, preventing coolant loss and engine overheating.

Catalogue entry: Cap closure; COUPL. PCE.