Details

• Brand:

  

• SKU:

  2Q0-121-321-A

• Positions: Front
• Other Names:

  Reservoir Cap, Radiator Cap, Cover

• Description:

  Genuine Audi OEM Cap is a genuine engine cooling reservoir cap designed to maintain proper pressure within your Audi's coolant system. This Audi OEM cap ensures the cooling system operates at the correct pressure threshold, preventing coolant loss, overheating, and potential engine damage caused by pressure fluctuations. The cap seals the coolant reservoir with a precision-calibrated pressure relief valve that opens and closes at exact tolerances specified by Audi engineers — something generic aftermarket caps frequently fail to replicate accurately. Choosing a genuine Audi reservoir cap over an aftermarket alternative matters because cooling system pressure tolerances are tightly engineered. An imprecise cap can cause premature coolant boiling, reservoir overflow, or insufficient pressure that leads to accelerated wear on hoses, the water pump, and the radiator itself. OEM cap 2Q0121321A is manufactured to exact Audi specifications using materials proven to withstand the thermal cycling demands of your specific vehicle, ensuring a reliable seal season after season. Whether you need a replacement radiator cap, reservoir cover, or cooling system cap, this genuine Audi part is the correct and trusted solution. Audi Henderson is an authorized Audi dealer, and every genuine OEM part sold comes backed by the manufacturer's warranty for your complete confidence and peace of mind.

• Notes: Included with reservoir.
• Applications: 2.5L. 2.0L, S3. 2.0L GAS. 1.4L Hybrid. 2.0L, A3 & A3 Quattro.
• Replaces:

  2q0121321, 3c0121321

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