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Genuine Audi A3 Radiator Cap

Cooling Radiator Cap
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2 Radiator Caps found

  • Audi A3 Radiator Cap - 3B0-121-321
    Diagram for Audi A3 Radiator Cap - 3B0-121-321
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    Audi A3 Reservoir Cap Part Number: 3B0-121-321

    $24.74 MSRP: $39.59
    You Save: $14.85 (38%)
    Ships in 1-2 Business Days
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    Product Specifications
    • Other Name: Cover; Cap, Radiator Cap
    • Warranty: This genuine part is guaranteed by Audi's factory warranty.
    Fits the following Vehicles:
    • 2006-2013 Audi A3 | Base, TDI | 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS
  • Audi A3 Radiator Cap - 2Q0-121-321-A
    Diagram for Audi A3 Radiator Cap - 2Q0-121-321-A
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    Audi A3 Reservoir Cap Part Number: 2Q0-121-321-A

    $26.86 MSRP: $42.98
    You Save: $16.12 (38%)
    Ships in 1-2 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Cover; Cap, Reservoir Cap
    • Replaces: 2Q0-121-321, 3C0-121-321
    • Warranty: This genuine part is guaranteed by Audi's factory warranty.
    Fits the following Vehicles:
    • 2022-2024, 2017-2020 Audi A3 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS

Audi A3 Radiator Cap

The Audi A3 Radiator Cap secures the engine temperature by closing the Audi cooling loop and retaining approximately 16 PSI of pressure, allowing the coolant to stay liquid even in summer traffic or when accelerating the car hard. The Radiator Cap is trusted over the years and increases the boiling point, cushions the lightweight aluminum block, and, when pressure is at its peak, its second valve easily directs excess fluid to the overflow tank and back when temperatures drop, thus the system does not run dry. This self-cooling loop is more efficient since the water pump will never have to operate without a solid column of coolant, and it introduces an element of safety since it helps in avoiding the sudden burst of steam under the hood. The Radiator Cap is compatible with early Audi three-door hatches, modern Sportback, and the punchy S3 or RS variants, but they retain the two-stage design across generations to allow a single correctly rated unit to fit across a range of many of the model years in the A3 family. All Audi components are made with alloys that resist corrosion and springs that have a lifetime of many heat cycles and which keep the part in the clamp throughout its service life, and have come to be known as a symbol of highly reliable reliability on the Audi test tracks and on the highway, as well as in everyday commuting. A bright pressure label on the top allows the owners to check the fit at a glance, and the small size allows the replacement of the device in minutes but prevents the serious costs of head gasket fixes in the future. A lot of cooling issues attributed to thermostats or fans are eliminated with a new cap in place, which highlights its disproportionately large impact on vehicle well-being in general. At the helm of a slick A3 sedan riding along the city streets or at the mountain switchbacks, dedicated Audi enthusiasts can be sure that the Radiator Cap maintains a high level of performance and low temperatures.

Choose original equipment manufacturer Radiator Cap for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Radiator Cap at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi A3 and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your A3 needs now.

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