Lunwag coolant reservoir for Audi A3 with translucent tank for easy level check
Lunwag reservoir cap on Audi Q3 with clear level visibility
Lunwag reservoir in Audi TT shows durable plastic and cap
Lunwag RS3 reservoir with cap ready for replacement
Lunwag coolant reservoir for VW Golf GTI with direct fit
Lunwag reservoir for VW Jetta offers easy maintenance
Replacement Lunwag reservoir showing direct OE substitute for 603-253 and 1K0121407A
Lunwag coolant reservoir for Audi A3 with translucent tank for easy level check
Lunwag reservoir cap on Audi Q3 with clear level visibility
Lunwag reservoir in Audi TT shows durable plastic and cap
Lunwag RS3 reservoir with cap ready for replacement
Lunwag coolant reservoir for VW Golf GTI with direct fit
Lunwag reservoir for VW Jetta offers easy maintenance
Replacement Lunwag reservoir showing direct OE substitute for 603-253 and 1K0121407A

Lunwag Coolant Reservoir Tank with Cap — Replacement 603-253 / 1K0121407A for Audi VW (2006-2019)

Introducing the Lunwag coolant reservoir tank with cap, a practical replacement designed for a long list of...
Vendor: Lunwag
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£45.12
£45.12
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Lunwag coolant reservoir for Audi A3 with translucent tank for easy level check

Lunwag Coolant Reservoir Tank with Cap — Replacement 603-253 / 1K0121407A for Audi VW (2006-2019)

£45.12
Lunwag coolant reservoir for Audi A3 with translucent tank for easy level check
Lunwag reservoir cap on Audi Q3 with clear level visibility
Lunwag reservoir in Audi TT shows durable plastic and cap
Lunwag RS3 reservoir with cap ready for replacement
Lunwag coolant reservoir for VW Golf GTI with direct fit
Lunwag reservoir for VW Jetta offers easy maintenance
Replacement Lunwag reservoir showing direct OE substitute for 603-253 and 1K0121407A

Lunwag Coolant Reservoir Tank with Cap — Replacement 603-253 / 1K0121407A for Audi VW (2006-2019)

£45.12
Description
Description
x

Introducing the Lunwag coolant reservoir tank with cap, a practical replacement designed for a long list of Audi and VW models from 2006 through 2019. Built from heat resistant plastic, it withstands engine heat and vibration while remaining semi translucent to help you gauge coolant levels at a glance.

Key advantages

  • High-Quality construction ensures durability under typical driving conditions and engine heat.
  • Translucent design allows quick monitoring of coolant levels without releasing the radiator cap.
  • Broad compatibility covers Audi A3, Q3, TT, RS3 and several VW models such as Beetle, Golf GTI, Jetta, Passat, CC, Eos, and Rabbit. Always verify fitment by part number or vehicle filter.
  • Essential cooling system component that helps prevent leaks and overheating, supporting reliable engine performance.
  • Easy installation with a replacement reservoir and surge cap included, simplifying the replacement process.
  • Direct replacement for OE numbers 603-253 and 1K0121407A, ensuring a precise fit and reliable operation.

What you get and how it helps

The Lunwag reservoir serves as a critical part of the cooling system, storing excess coolant and allowing it to circulate as temperatures rise. A well-sealed reservoir helps maintain pressure and coolant levels, reducing the risk of low coolant conditions on hot days or during spirited driving.

  • Monitor coolant visually and top up when needed using the translucent body.
  • Replace a worn or leaking tank with a direct OE match for consistent performance.
  • Cap and surge cap included to restore a complete cooling circuit and cap pressure management.

Installation and fitment guidance

Before purchase, consult the full vehicle list in the description to confirm compatibility. This reservoir is designed as a straightforward direct replacement on eligible Audi and VW models, making it suitable for DIY replacements or professional service.

FAQ

Q: Which vehicles are compatible with the Lunwag coolant reservoir tank with cap?

A: Compatible with Audi and VW models from 2006 to 2019; confirm fitment by part number.

Q: What practical benefits does replacing the coolant reservoir offer?

A: Helps minimize coolant leaks and loss while enabling easy level monitoring for reliable cooling.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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