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Audi Cooling Expansion Tank Parts

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Coolant Expansion Tank

ES#3142773 - 8E0121403D - Coolant Expansion Tank - Includes integrated coolant level sensor - Hudson - Audi

Includes integrated coolant level sensor From the 2002 model year

Brand:
Hudson - Corporate Logo
ES#:
3142773
Mfg#:
8E0121403D
Ships in 1-2 days
$23.56 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose - Lower

ES#3142722 - 1J0122109AQ - Expansion Tank Hose - Lower - Replace at the first signs of leakage - Hudson - Audi Volkswagen

Replace at the first signs of leakage

Brand:
Hudson - Corporate Logo
ES#:
3142722
Mfg#:
1J0122109AQ
Ships in 1-2 days
$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2709072 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - URO - Audi

Plastic pressure cap for expansion tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2709072
Mfg#:
8E0121321
Ships in 2 Business Days
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Air Conditioning O-Ring - Priced Each

ES#2554927 - 4D0260749B - Air Conditioning O-Ring - Priced Each - 7.6x2.5 - Genuine Volkswagen Audi - Audi

7.6x2.5

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2554927
Mfg#:
4D0260749B
Ships in 3 Business Days
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3139100 - 1J0121407E - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - Hudson - Audi Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank

Brand:
Hudson - Corporate Logo
ES#:
3139100
Mfg#:
1J0121407E
Ships in 1-2 days
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose - Lower

ES#2802995 - 1J0122109AQ - Expansion Tank Hose - Lower - Replace at the first signs of leakage - Rein - Audi Volkswagen

Replace at the first signs of leakage 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802995
Mfg#:
1J0122109AQ
Ships in 4 Business Days
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2598116 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Calorstat - Audi

Plastic pressure cap for expansion tank

Brand:
Calorstat - Corporate Logo
ES#:
2598116
Mfg#:
8E0121321
Back Ordered
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose - Lower

ES#4810100 - 1K0121109AK - Expansion Tank Hose - Lower - Replace at the first signs of leakage - Vaico - Audi Volkswagen

Replace at the first signs of leakage We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4810100
Mfg#:
1K0121109AK
Special Order: No Guaranteed ETA
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose - Lower

ES#2814307 - 1J0122109AQ - Expansion Tank Hose - Lower - Replace at the first signs of leakage - Hamburg Tech - Audi Volkswagen

Replace at the first signs of leakage We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814307
Mfg#:
1J0122109AQ
Ships in 2 Business Days
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

ES#3970169 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Meyle - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970169
Mfg#:
5Q0121321
Ships on Oct 1, 2026
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#10455 - 443121321 - Expansion Tank Cap - Keep proper pressure on your coolant - Febi - Audi Volkswagen

Keep proper pressure on your coolant We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
10455
Mfg#:
443121321
Ships in 2 Business Days
$6.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap Seal

ES#2598146 - 1H0121687A - Expansion Tank Cap Seal - Seals the expansion tank cap to the reservoir. 28.5x3.8 - Vaico - Audi Volkswagen

Seals the expansion tank cap to the reservoir. 28.5x3.8 We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2598146
Mfg#:
1H0121687A
Ships in 2 Business Days
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2872480 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Febi - Audi

Plastic pressure cap for expansion tank We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2872480
Mfg#:
8E0121321
Ships in 2 Business Days
$11.99

This product was last offered at the strikethrough price on
05-07-2026

$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose

ES#2802313 - 8E0121107G - Expansion Tank Hose - Connects the radiator feed hose to the expansion tank - Rein - Audi

Connects the radiator feed hose to the expansion tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802313
Mfg#:
8E0121107G
Ships in 2 Business Days
$10.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Cap

ES#2802007 - 1J0121321B - Expansion Tank Cap - Keep proper pressure on your coolant - Rein - Audi Volkswagen Porsche

Keep proper pressure on your coolant 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802007
Mfg#:
1J0121321B
Ships on Oct 1, 2026
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#2814304 - 1J0121321B - Expansion Tank - Keep proper pressure in your coolant system - Hamburg Tech - Audi Volkswagen

Keep proper pressure in your coolant system We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814304
Mfg#:
1J0121321B
Ships in 2 Business Days
$4.99 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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