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Audi Cooling Expansion Tank Parts

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ES#4164539 - 420121403 - Coolant Expansion Tank - Coolant level sensor enclosed in tank - URO - Audi

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:
URO - Corporate Logo
ES#:
4164539
Mfg#:
420121403
Back Ordered
$185.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3623897 - 8K0121405M - Expansion Tank - - URO - Audi

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#:
3623897
Mfg#:
8K0121405M
In Stock
$38.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4067034 - 020807ECS01 -  Build-Your-Own Carbon Fiber Expansion Tank Cover Kit - Select your own expansion tank cover color and cap to enhance your engine bay - ECS - Audi Volkswagen

Select your own expansion tank cover color and cap to enhance your engine bay affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4067034
Mfg#:
020807ECS01
Ships in 2 Business Days
ON SALE!
Starting at $258.08 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4039536 - 4G0121403AC - Coolant Expansion Tank - Coolant level sensor enclosed in tank - Behr - Audi

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

Brand:
Behr - Corporate Logo
ES#:
4039536
Mfg#:
4G0121403AC
Ships in 1 Business Day
$69.99

This product was last offered at the strikethrough price on
04-06-2026

$66.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2536961 - 8K0121081T - Expansion Tank Hose - Connects the expansion tank to the throttle body union - Genuine Volkswagen Audi - Audi

Connects the expansion tank to the throttle body union affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2536961
Mfg#:
8K0121081T
Ships in 2 Business Days
8% off MSRP

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

$115.00

This product was last offered at the strikethrough price on
06-07-2026

$105.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#450280 - 8K0121109Q - Expansion Tank Lower Hose - Connects the lower radiator hose to the expansion tank - Genuine Volkswagen Audi - Audi

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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450280
Mfg#:
8K0121109Q
Ships in 2 Business Days
8% off MSRP

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

$115.00

This product was last offered at the strikethrough price on
06-07-2026

$105.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
390027
Mfg#:
4F0121107CC
Ships in 2 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.

$113.99

This product was last offered at the strikethrough price on
06-07-2026

$103.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4790 - N90775001 - T25 Torx Screw - Priced Each - Install new hardware with your new parts. 4.8x16 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. 4.8x16 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#:
4790
Mfg#:
N90775001
In Stock
ON SALE! SAVE 82%
$7.99

This product was last offered at the strikethrough price on
05-14-2026

$1.40 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2556706 - 8K0121086AA - 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#:
2556706
Mfg#:
8K0121086AA
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.

$138.99

This product was last offered at the strikethrough price on
06-07-2026

$126.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2637203 - 8E0121403FKT1 - 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2637203
Mfg#:
8E0121403FKT1
Ships in 1 day
$167.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#352880 - 420121403 - 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#:
352880
Mfg#:
420121403
Ships in 1 day
8% off MSRP

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

$511.99

This product was last offered at the strikethrough price on
06-07-2026

$468.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5340291 - 4M0121321Q - Coolant Expansion Tank Cap  - Keep proper pressure in your coolant system - Hamburg Tech - Audi

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hamburg Tech - Corporate Logo
ES#:
5340291
Mfg#:
4M0121321Q
In Stock
$35.99 USD
Free Shipping
on orders $49 and up
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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
ES#261042 - 1J0121321B - Expansion Tank Cap - Keep proper pressure in your coolant system - Genuine Volkswagen Audi - Audi Volkswagen

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
261042
Mfg#:
1J0121321B
Ships in 2 Business Days
30% off MSRP

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

$39.59

This product was last offered at the strikethrough price on
06-07-2026

$27.91 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2535175 - 8D0121403L - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - URO - Audi Volkswagen

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
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535175
Mfg#:
8D0121403L
Ships in 1 Business Day
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2571368 - 4F0121403AA - 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#:
2571368
Mfg#:
4F0121403AA
Ships in 2 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.

$158.99

This product was last offered at the strikethrough price on
06-07-2026

$144.99 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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