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Audi Cooling Expansion Tank Parts

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ES#315285 - 1K0121109AL - Coolant Hose - Connecting hose between the pair of expansion tank pipes and the pipe that connects the water pump to the coolant flange - Genuine Volkswagen Audi - Audi Volkswagen

Connecting hose between the pair of expansion tank pipes and the pipe that connects the water pump to the coolant flange affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with TSI engines only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
315285
Mfg#:
1K0121109AL
Ships in 1 day
13% off MSRP

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

$15.99

This product was last offered at the strikethrough price on
06-08-2026

$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3668526 - 4M0121403H - Coolant Expansion Tank - See your coolant levels clearly again, comes with coolant level sensor, does not include cap - Genuine Volkswagen Audi - Audi

See your coolant levels clearly again, comes with coolant level sensor, does not include cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3668526
Mfg#:
4M0121403H
Ships in 1 day
9% off MSRP

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

$148.99

This product was last offered at the strikethrough price on
06-08-2026

$135.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1875258 - 4F0121403T - Coolant Expansion Tank - Includes the low coolant sensor - Genuine Volkswagen Audi - Audi

Includes the low coolant sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1875258
Mfg#:
4F0121403T
Ships in 1 day
9% off MSRP

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

$148.99

This product was last offered at the strikethrough price on
06-08-2026

$135.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#436246 - 8E0121403A - Coolant Expansion Tank - Replace your old coolant tank and stop those pesky leaks - Genuine Volkswagen Audi - Audi

Replace your old coolant tank and stop those pesky leaks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
436246
Mfg#:
8E0121403A
In Stock
Limited Qty Sale
$74.99

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

$66.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#382322 - 4E0121403G - Coolant Expansion Tank - Includes integrated coolant level sensor - Genuine Volkswagen Audi - Audi

Includes integrated coolant level sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
382322
Mfg#:
4E0121403G
Ships in 1 day
$167.99

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

$132.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3249861 - 4H0121403M - Coolant Expansion Tank - Coolant level sensor enclosed in tank - Genuine Volkswagen Audi - Audi

Coolant level sensor enclosed in tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3249861
Mfg#:
4H0121403M
Ships in 4 Business Days
9% off MSRP

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

$140.99

This product was last offered at the strikethrough price on
06-08-2026

$128.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3249862 - 4H0121403N - Coolant Expansion Tank - Plastic reservoir for the cooling system - Genuine Volkswagen Audi - Audi

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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3249862
Mfg#:
4H0121403N
Ships in 1 day
9% off MSRP

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

$138.99

This product was last offered at the strikethrough price on
06-08-2026

$126.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4726300 - 420121403 - Coolant Expansion Tank With Cap - Coolant level sensor enclosed in tank, and includes cap! - Hamburg Tech - Audi

Coolant level sensor enclosed in tank, and includes cap! 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#:
4726300
Mfg#:
420121403
Ships in 1 Business Day
$119.95 USD
Free Shipping
on orders $49 and up
ES#470541 - N90693001 - T-Fitting - Priced Each - 8x8x8 - Replace cracked or broken fittings - Genuine Volkswagen Audi - Audi Volkswagen

8x8x8 - Replace cracked or broken fittings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470541
Mfg#:
N90693001
Ships in 1 day
Limited Qty Sale
$16.99

This product was last offered at the strikethrough price on
05-04-2026

$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4066649 - 8K0121403Q - Coolant Expansion Tank - Plastic reservoir for the coolant system - Hamburg Tech - Audi Porsche

Plastic reservoir for the coolant 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#:
4066649
Mfg#:
8K0121403Q
Ships in 1 Business Day
$39.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#470730 - N90770201 - Spring Clamp - Priced Each - Ensure a proper seal on hose connections. 17x12 - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal on hose connections. 17x12 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the expansion tank hose on both sides.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470730
Mfg#:
N90770201
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2180684
Mfg#:
4G0121081AL
Ships in 1 day
9% 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
06-08-2026

$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2103021 - 4G0121081AE - Expansion Tank Upper Hose - Left - Overflow relief hose for the radiator - Genuine Volkswagen Audi - Audi

Overflow relief hose for the radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production dates up to 12/16/2013

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2103021
Mfg#:
4G0121081AE
Ships in 1 day
9% 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
06-08-2026

$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3437291 - 7L0121407F - Coolant Expansion Tank - Coolant level sensor enclosed in tank - Rein - Audi Volkswagen Porsche

Coolant level sensor enclosed in 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#:
3437291
Mfg#:
7L0121407F
Ships on Jun 24, 2026
$117.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1232218 - 7L6122447BD - Expansion Tank Vent Hose - Allows the coolant system to vent into the expansion tank - Genuine Volkswagen Audi - Audi

Allows the coolant system to vent into the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1232218
Mfg#:
7L6122447BD
Ships in 8 Business Days
7% off MSRP

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

$123.99

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

$114.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2592620 - 1K0121407AKT5 - Expansion Tank Replacement Kit - Everything in one kit to replace your coolant expansion tank - Genuine Volkswagen Audi - Audi

Everything in one kit to replace your coolant expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2592620
Mfg#:
1K0121407AKT5
In Stock
$127.99

This product was last offered at the strikethrough price on
12-22-2025

$111.99 USD
Free Shipping
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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