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Audi Cooling Expansion Tank Parts

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Plastic Coolant Hose

ES#3212553 - 80A121081S - Plastic Coolant Hose - Connects the expansion tank to the radiator - Genuine Volkswagen Audi - Audi

Connects the expansion tank to the radiator 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:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3212553
Mfg#:
80A121081S
Ships in 3 Business Days
13% off MSRP

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

$106.99

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

$92.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#4163739 - 80A121405AG - Coolant Expansion Tank - See your coolant levels clearly again, comes with coolant level sensor - Genuine Volkswagen Audi - Audi

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
For vehicles with model year from 2021+ (engine code DPVA)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4163739
Mfg#:
80A121405AG
Ships in 4 Business Days
10% off MSRP

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

$200.00

This product was last offered at the strikethrough price on
05-01-2026

$180.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank - With Cap

ES#3560316 - 7L0121407FKIT - Coolant Expansion Tank - With Cap - Coolant level sensor enclosed in tank - Hamburg Tech - Audi Volkswagen

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

Brand:
Hamburg Tech - Corporate Logo
ES#:
3560316
Mfg#:
7L0121407FKIT
In Stock at Vendor
$89.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#1863843 - 8J0121407 - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - Genuine Volkswagen Audi - Audi

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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1863843
Mfg#:
8J0121407
Ships on Nov 16, 2026
10% off MSRP

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

$198.99

This product was last offered at the strikethrough price on
10-26-2026

$178.99 USD
Free Shipping
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 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#:
2637205
Mfg#:
8E0121403FKT3
Ships in 9 Business Days
$357.91

This product was last offered at the strikethrough price on
10-26-2026

$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 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
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
10-28-2026

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

Expansion Tank Vent Hose

ES#2180684 - 4G0121081AL - Expansion Tank Vent Hose - Keep your temps where they are supposed to be! - Genuine Volkswagen Audi - Audi

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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2180684
Mfg#:
4G0121081AL
Ships in 1-2 days
10% off MSRP

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

$128.99

This product was last offered at the strikethrough price on
10-26-2026

$115.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#3677963 - 8t0121405KT - Expansion Tank Replacement Kit - Composed of genuine Audi parts to fix your leaking coolant expansion tank. - Genuine Volkswagen Audi - Audi

Composed of genuine Audi parts to fix your leaking coolant 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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3677963
Mfg#:
8T0121405KT
Ships on Nov 16, 2026
$348.99

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

$331.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Replacement Kit W/ R8 Coolant Cap

ES#2598438 - 8D0121403DR8KT - 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 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#:
2598438
Mfg#:
8D0121403DR8KT
Back Ordered
$335.53

This product was last offered at the strikethrough price on
10-26-2026

$330.70 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Screw - Priced Each

ES#470958 - N90846602 - Expansion Tank Screw - Priced Each - Install new hardware with your new parts, 2 Required. 5x20 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts, 2 Required. 5x20 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:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470958
Mfg#:
N90846602
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
10-28-2026

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

Coolant Expansion Tank

ES#4883484 - 8K0121405S - Coolant Expansion Tank - Includes the heat shield and cap - Rein - Audi

Includes the heat shield and cap 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!

Brand:
Rein - Corporate Logo
ES#:
4883484
Mfg#:
8K0121405S
In Stock at Vendor
$52.99 USD
Free Shipping
on orders $49 and up

Coolant T Connector

ES#3623904 - N90692901 - Coolant T Connector - Connects to the lower radiator hose - URO - Audi Volkswagen

Connects to the lower radiator hose 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!
Connects lower radiator hose to the coolant expansion tank hose and water pump hose

Brand:
URO - Corporate Logo
ES#:
3623904
Mfg#:
N90692901
Ships in 2 Business Days
$11.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2586930 - 8E0121403KT1 - 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 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#:
2586930
Mfg#:
8E0121403KT1
In Stock
ON SALE! SAVE 10%
$47.99

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

$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose

ES#390027 - 4F0121107CC - Expansion Tank Hose - Connects the upper radiator hose and coolant flange to the expansion tank - Genuine Volkswagen Audi - Audi

Connects the upper radiator hose and coolant flange 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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
390027
Mfg#:
4F0121107CC
Ships in 1-2 days
13% off MSRP

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

$113.99

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

$98.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#4212848 - 4F0121403T - Coolant Expansion Tank - Includes the low coolant sensor - URO - Audi

Includes the low coolant 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!

Brand:
URO - Corporate Logo
ES#:
4212848
Mfg#:
4F0121403T
Ships in 2 Business Days
$95.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2499502 - 1K0121407A - Coolant Expansion Tank - See your coolant levels clearly again, comes with coolant level sensor - Vaico - 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:
Vaico - Corporate Logo
ES#:
2499502
Mfg#:
1K0121407A
Ships in 2 Business Days
$48.99

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

$47.99 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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