Descrizione
Genuine OEM coolant expansion tank cap with part number 3B0121321 for selected Volkswagen and Audi applications named in the title, including Golf, Passat, A3, A4 and A6. This used original cap is identified by the exact OEM reference and is intended for the coolant expansion tank or reservoir assembly. Its role is to close the expansion tank and maintain the cooling system’s designed pressure during normal operation. This listing is for the cap itself only. Because this is a used OEM component, cosmetic wear such as light marks, discoloration or signs of prior installation may be present. Please match the part number exactly against your existing component before purchase; detailed fitment, revisions and pressure rating should be confirmed by the buyer. Suitable where an original Volkswagen Audi reservoir cap with OEM number 3B0121321 is required as a replacement.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
