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Audi B7 Cooling Expansion Tank Parts

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Coolant Expansion Tank

ES#262893 - 8E0121403 - Coolant Expansion Tank - Plastic reservoir for cooling system - Meyle - Audi

Plastic reservoir for cooling system 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
262893
Mfg#:
8E0121403
In Stock
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap Seal

ES#302264 - 1H0121687A - Expansion Tank Cap Seal - Seals the expansion tank cap to the reservoir. 28.5x3.8 - Genuine Volkswagen Audi - Audi Volkswagen

Seals the expansion tank cap to the reservoir. 28.5x3.8

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
302264
Mfg#:
1H0121687A
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2709040 - 3B0121321 - Expansion Tank Cap - Keep proper pressure in your coolant system - URO - Audi Volkswagen

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

Brand:
URO - Corporate Logo
ES#:
2709040
Mfg#:
3B0121321
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expanding Nut - Priced Each

ES#422162 - 811807577C - Expanding Nut - Priced Each - Install new hardware with your new parts. - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. Used in securing the coolant expansion tank

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
422162
Mfg#:
811807577C
In Stock
$2.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2637204 - 8E0121403FKT2 - Expansion Tank Replacement Kit - Everything you need to replace your faded, cracked, or leaky expansion tank! - Assembled By ECS - Audi

Everything you need to replace your faded, cracked, or leaky expansion tank! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2637204
Mfg#:
8E0121403FKT2
Ships on Oct 6, 2026
Auto Notify
ON SALE! SAVE 14%
$62.99

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

$54.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#1910119 - 8E0121403F - Coolant Expansion Tank - Coolant level sensor enclosed in tank - Vaico - Audi

Coolant level sensor enclosed in tank We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
1910119
Mfg#:
8E0121403F
In Stock
ON SALE! SAVE 42%
$75.99

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

$44.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit W/ R8 Coolant Cap

ES#2637205 - 8E0121403FKT3 - Expansion Tank Replacement Kit W/ R8 Coolant Cap - Install a brand new expansion tank with a new R8 polished aluminum cap and hardware - Assembled By ECS - Audi

Install a brand new expansion tank with a new R8 polished aluminum cap and hardware 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2637205
Mfg#:
8E0121403FKT3
Ships on Oct 6, 2026
Auto Notify
$357.91

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

$353.08 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Screw - Priced Each

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 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
09-06-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

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 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4004591
Mfg#:
5Q0121321
In Stock
ON SALE!
$16.99

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

$16.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2582072 - 8E0121403 - Coolant Expansion Tank - Plastic reservoir for cooling system - Vaico - Audi

Plastic reservoir for cooling system We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2582072
Mfg#:
8E0121403
Ships in 1 Business Day
$60.99

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

$58.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2535177 - 8E0121403A - Coolant Expansion Tank - Replace your cracked or faded expansion tank. - URO - Audi

Replace your cracked or faded expansion tank. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535177
Mfg#:
8E0121403A
Ships in 1 Business Day
$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

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 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818658
Mfg#:
5Q0121321
In Stock
ON SALE! SAVE 50%
$15.99

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

$8.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expanding Nut - Priced Each

ES#2891455 - 811807577C - Expanding Nut - Priced Each - Install new hardware with your new parts. - Vaico - Audi Volkswagen

Install new hardware with your new parts. 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
ON SALE! SAVE 33%
$7.99

This product was last offered at the strikethrough price on
08-26-2026

$5.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#4220586 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Rein - Audi

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

Brand:
Rein - Corporate Logo
ES#:
4220586
Mfg#:
8E0121321
In Stock at Vendor
ON SALE!
$18.99

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

$18.04 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

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 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2587387
Mfg#:
8E0121403KT3
In Stock
ON SALE!
$72.99

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

$68.52 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Vent Hose

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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
436161
Mfg#:
8E0121107AE
Ships in 1-2 days
$66.99 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.

Let us help you find the parts that fit your Audi

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