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Audi B7 A4 FWD 2.0T Cooling Expansion Tank Parts

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ES#471868 - N91090701 - Screw - Priced Each - Install new hardware with your new parts. 5x20 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. 5x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Used to secure the coolant expansion tank

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471868
Mfg#:
N91090701
In Stock
25% off MSRP

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

$3.99

This product was last offered at the strikethrough price on
06-03-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4004591 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Rein - Audi Volkswagen Porsche

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4004591
Mfg#:
5Q0121321
In Stock
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2535177 - 8E0121403A - Coolant Expansion Tank - Replace your cracked or faded expansion tank. - URO - Audi

Replace your cracked or faded expansion tank. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535177
Mfg#:
8E0121403A
Ships in 2 Business Days
$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2891455 - 811807577C - Expanding Nut - Priced Each - Install new hardware with your new parts. - Vaico - Audi Volkswagen

Install new hardware with your new parts. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Used in securing the coolant expansion tank

Brand:
Vaico - Corporate Logo
ES#:
2891455
Mfg#:
811807577C
In Stock
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4818658 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Bremmen Parts - Audi Volkswagen Porsche

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818658
Mfg#:
5Q0121321
Ships in 2 Business Days
ON SALE! SAVE 24%
$15.99

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

$12.23 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#436161 - 8E0121107AE - Expansion Tank Vent Hose - Connects coolant expansion tank to the upper radiator hose - Genuine Volkswagen Audi - Audi

Connects coolant expansion tank to the upper radiator hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
436161
Mfg#:
8E0121107AE
Ships in 9 Business Days
12% off MSRP

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

$49.99

This product was last offered at the strikethrough price on
02-26-2026

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#280095 - 06B145917A - Spring Clamp (21x12) - Priced Each - Spring band clamp used in various areas on your European vehicle - Genuine Volkswagen Audi - Audi

Spring band clamp used in various areas on your European vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures expansion tank vent hose on both sides

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280095
Mfg#:
06B145917A
Ships in 1-2 days
11% off MSRP

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

$17.99

This product was last offered at the strikethrough price on
02-26-2026

$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2587387 - 8E0121403KT3 - Expansion Tank Replacement Kit - Everything in one kit to replace your coolant expansion tank - Assembled By ECS - Audi

Everything in one kit to replace your coolant expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2587387
Mfg#:
8E0121403KT3
In Stock
ON SALE! SAVE 50%
$140.99

This product was last offered at the strikethrough price on
01-09-2026

$70.27 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3189293 - 603-638 - Coolant Expansion Tank - Plastic reservoir for cooling system - Dorman - Audi

Plastic reservoir for cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Dorman - Corporate Logo
ES#:
3189293
Mfg#:
603-638
Ships in 5 Business Days
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4220586 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Rein - Audi

Plastic pressure cap for expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4220586
Mfg#:
8E0121321
In Stock at Vendor
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2091199 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Genuine Volkswagen Audi - Audi

Plastic pressure cap for expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2091199
Mfg#:
8E0121321
In Stock
11% off MSRP

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

$55.99

This product was last offered at the strikethrough price on
02-26-2026

$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Behr - Corporate Logo
ES#:
2862682
Mfg#:
376737131
In Stock at Vendor
$49.98

This product was last offered at the strikethrough price on
03-06-2026

$47.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2816324 - 8E0121403 - Coolant Expansion Tank - Plastic reservoir for cooling system - Hamburg Tech - Audi

Plastic reservoir for cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2816324
Mfg#:
8E0121403
Ships in 2 Business Days
$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2709072 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - URO - Audi

Plastic pressure cap for expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2598146
Mfg#:
1H0121687A
In Stock at Vendor
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3139155 - 8E0121403 - Coolant Expansion Tank - Plastic reservoir for cooling system - Hudson - Audi

Plastic reservoir for cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hudson - Corporate Logo
ES#:
3139155
Mfg#:
8E0121403
Ships in 1-2 days
$27.00 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.

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Manufacturer names and/or part numbers are used only for identification purposes.

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