Audi A6 C6 Coolant Expansion Tank 4F0121403N - SWAG 30944510

Description

SWAG 30 94 4510 coolant expansion tank for the Audi A6 C6 (4F), 2004 on. Replaces Audi 4F0 121 403 N. New old stock, never fitted. The box shows storage age. The part is new and unused.

One in stock.

What it is. The plastic header tank that holds spare coolant and lets it expand as the engine warms up. Old tanks go brittle and crack, and they leak at the seams or around the cap. A leaking tank lets the engine run low on coolant and overheat.

Specification

  • Replaces Audi 4F0 121 403 N, 4F0 121 403 C, 4F0 121 403 G and 4F0 121 403 R
  • Same part as Febi 44510, Meyle 100 223 0006, Mahle CRT 20 000S and Nissens 996288
  • SWAG is part of the Bilstein group in Germany

What it fits

  • Audi A6 C6 (4F), 2004 on
  • Engines 2.0 TDI, 2.0 TFSI, 2.4, 2.7 TDI, 2.8 FSI, 3.0 TDI, 3.0 FSI and 3.2 FSI

The cap and level sensor are not listed as included. Swap them over from your old tank if they are still good.

Fitment

Check the number on your old tank, or send us your rego and we will confirm before you buy.

Fitting

  • Let the engine cool fully before you open the cooling system.
  • Drain some coolant, unplug the level sensor and undo the hoses.
  • Fit the new tank, refill with the correct coolant and bleed the air out.
  • Check for leaks once the engine is warm.

Best fitted by a qualified mechanic.

Audi A6 C6 Coolant Expansion Tank 4F0121403N - SWAG 30944510

Product form

SWAG 30 94 4510 coolant expansion tank for the Audi A6 C6 (4F), 2004 on. Replaces Audi 4F0 121 403... Read more

1 in stock Dispatch in 1–3 business days

$74.80 Incl. VAT

    • Guaranteed secure & safe checkout. NZ owned & operated.

      shop pay
    • Free shipping on orders of $100 or more
    • Consumer Guarantees Act protection on every order

    Description

    SWAG 30 94 4510 coolant expansion tank for the Audi A6 C6 (4F), 2004 on. Replaces Audi 4F0 121 403 N. New old stock, never fitted. The box shows storage age. The part is new and unused.

    One in stock.

    What it is. The plastic header tank that holds spare coolant and lets it expand as the engine warms up. Old tanks go brittle and crack, and they leak at the seams or around the cap. A leaking tank lets the engine run low on coolant and overheat.

    Specification

    • Replaces Audi 4F0 121 403 N, 4F0 121 403 C, 4F0 121 403 G and 4F0 121 403 R
    • Same part as Febi 44510, Meyle 100 223 0006, Mahle CRT 20 000S and Nissens 996288
    • SWAG is part of the Bilstein group in Germany

    What it fits

    • Audi A6 C6 (4F), 2004 on
    • Engines 2.0 TDI, 2.0 TFSI, 2.4, 2.7 TDI, 2.8 FSI, 3.0 TDI, 3.0 FSI and 3.2 FSI

    The cap and level sensor are not listed as included. Swap them over from your old tank if they are still good.

    Fitment

    Check the number on your old tank, or send us your rego and we will confirm before you buy.

    Fitting

    • Let the engine cool fully before you open the cooling system.
    • Drain some coolant, unplug the level sensor and undo the hoses.
    • Fit the new tank, refill with the correct coolant and bleed the air out.
    • Check for leaks once the engine is warm.

    Best fitted by a qualified mechanic.

    Returns & Delivery

    When will my order be delivered?

    We ship to New Zealand addresses only, including rural delivery. Orders are
    dispatched within 1–3 business days. Once dispatched, NZ Post usually takes 2–3
    business days to main centres and 3–5 business days to regional and rural areas.
    You'll receive tracking by email once your order is on its way.

    Can I return my product?

    Your rights under the Consumer Guarantees Act 1993 apply to every purchase. If a
    part is faulty, not as described, or not what you ordered, contact us and we'll
    put it right. We don't accept change-of-mind returns, and confirming a part fits
    your vehicle is your responsibility before ordering. See our Refund Policy for
    full detail.

    What can I do if my item (or part of it) is damaged?

    Check your order when it arrives. If anything has arrived damaged, contact us
    with a photo and we'll put it right by repair, replacement or refund. Tell us as
    soon as you reasonably can so we can lodge a claim with NZ Post.

    Recently viewed products

      Footer image

      © 2026 Thebros, Powered by Shopify

        • American Express
        • Apple Pay
        • Google Pay
        • Mastercard
        • Shop Pay
        • Union Pay
        • Visa