Audi B9 A5 Quattro 2.0T Coupe Cooling Expansion Tank Parts

Keep proper pressure in your coolant system

Brand:

ES#:

3672033

Mfg#:

3C0121321

$5.99 USD

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on orders $49 and up

Lifetime Replacement

Install a brand new expansion tank with a new cap and hardware Fits from production date 1/14/2019

Brand:

ES#:

3969909

Mfg#:

8W0121405GKT1

$252.99 USD

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on orders $49 and up

Lifetime Replacement

Install a brand new expansion tank with a new cap and hardware Fits up to production date 11/13/2017

Brand:

ES#:

3969907

Mfg#:

8W0121405EKT

$252.99 USD

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on orders $49 and up

Lifetime Replacement

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank For Vehicles with DPAA Engine Code Only

Brand:

ES#:

4307416

Mfg#:

8W0121405K

8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$76.99

This product was last offered at the strikethrough price on
07-31-2026

$70.99 USD

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on orders $49 and up

Lifetime Replacement

Coolant expansion tank to cure mysterious coolant loss, resolve false dashboard warnings, and restore reliable engine cooling and aesthetics to your B9 chassis Audi. 2X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with CYMC Engine Code Only

Brand:

ES#:

5492873

Mfg#:

8W0121405L