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Audi Cooling Expansion Tank Parts

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Coolant Overflow Hose

The hose that leads from the radiator to the expansion tank Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For 2017-2019 Models Only

Brand:
Vaico - Corporate Logo
ES#:
5470296
Mfg#:
4M0121081AJ
Special Order: No Guaranteed ETA
$23.99 USD
Free Shipping
on orders $49 and up

AUDI | Radiator Hose

Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4863974
Mfg#:
5Q0122109J
Special Order: No Guaranteed ETA
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose - Upper

Connects the expansion tank to the cylinder head flange Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
Up to production date 4/9/2012

Brand:
Vaico - Corporate Logo
ES#:
4819054
Mfg#:
8R0121081
Special Order: No Guaranteed ETA
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Plastic reservoir for the coolant system 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Bremmen Parts - Corporate Logo
ES#:
5397089
Mfg#:
8K0121403Q
Special Order: No Guaranteed ETA
ON SALE! SAVE 12%
$30.99

This product was last offered at the strikethrough price on
05-02-2026

$27.19 USD
Free Shipping
on orders $49 and up

Expansion Tank Replacement Kit

ES#2586882 - 8D0121403DKT - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Assembled By ECS - Audi

Install a brand new expansion tank with a new cap and hardware 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Up to VIN 8D-W-007799, split is in the 1998 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586882
Mfg#:
8D0121403DKT
Back Ordered
$59.99

This product was last offered at the strikethrough price on
09-03-2026

$57.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 2

ES#4691355 - 8W1121405N1KT - Cooling System Refresh Kit - Level 2 - Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! - Assembled By ECS - Audi

Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Assembled By ECS - Corporate Logo
ES#:
4691355
Mfg#:
8W1121405N1KT
Back Ordered
$434.99

This product was last offered at the strikethrough price on
08-31-2026

$328.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Coolant Expansion Tank

ES#5492873 - 8W0121405L - Coolant Expansion Tank - Coolant expansion tank to cure mysterious coolant loss, resolve false dashboard warnings, and restore reliable engine cooling and aesthetics to your B9 chassis Audi. - Febi - Audi

Coolant expansion tank to cure mysterious coolant loss, resolve false dashboard warnings, and restore reliable engine cooling and aesthetics to your B9 chassis Audi. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For Vehicles with CYMC Engine Code Only

Brand:
Febi - Corporate Logo
ES#:
5492873
Mfg#:
8W0121405L
Special Order: No Guaranteed ETA
$78.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#4343694 - 1K0121407 - Coolant Expansion Tank - See your coolant levels clearly again, comes with coolant level sensor - Febi - Audi Volkswagen

See your coolant levels clearly again, comes with coolant level sensor Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4343694
Mfg#:
1K0121407
Special Order: No Guaranteed ETA
$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3970565 - 8E0121403A - Coolant Expansion Tank - Replace your cracked or faded expansion tank. - Meyle - Audi

Replace your cracked or faded expansion tank. 5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970565
Mfg#:
8E0121403A
Back Ordered
$24.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#2535174 - 8D0121403D - Coolant Expansion Tank - Includes integrated coolant level sensor - URO - Audi

Includes integrated coolant level sensor 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
Up to VIN 8D-W-007799, split is in the 1998 model year

Brand:
URO - Corporate Logo
ES#:
2535174
Mfg#:
8D0121403D
Back Ordered
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AUDI | Radiator Hose

ES#4864974 - 8K0121081AH - AUDI | Radiator Hose - Vaico - Audi

Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4864974
Mfg#:
8K0121081AH
Special Order: No Guaranteed ETA
$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Breather Hose

Expansion tank line that connects to the inner nipple next to the cap. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
For vehicles with production date through 2015

Brand:
Vaico - Corporate Logo
ES#:
4819053
Mfg#:
4G0121081AH
Special Order: No Guaranteed ETA
$127.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank Overflow Hose

Keep your coolant where it belongs! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4831057
Mfg#:
5N0121109E
Special Order: No Guaranteed ETA
$20.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Vent Hose

Keep your temps where they are supposed to be! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4819057
Mfg#:
4G0121081AL
Special Order: No Guaranteed ETA
$123.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tanks Breather Line

keep your engine temps where they are supposed to be! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4819061
Mfg#:
8W0121081ED
Special Order: No Guaranteed ETA
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AUDI | Radiator Hose

Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4864977
Mfg#:
8K0121081CA
Special Order: No Guaranteed ETA
$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Cooling Expansion Tank Parts

A common source of overheating problems is a broken or leaking coolant expansion tank. Replace it with an OEM coolant expansion tank or quality aftermarket expansion tank to prevent future woes.

Other Audi Cooling Expansion Tank Parts

Let us help you find the parts that fit your Audi

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