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Audi Cooling Expansion Tank Parts

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Coolant Expansion Tank

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

Coolant level sensor enclosed in tank 2X Entries Into Our F80 M3 Sweepstakes
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

Expansion Tank Replacement Kit - Complete Assembly

ES#2762975 - 1j0121407fkt - Expansion Tank Replacement Kit - Complete Assembly - Clean up your engine bay or replace your cracked unit with a new coolant expansion tank replacement kit. - Genuine Volkswagen Audi - Audi Volkswagen

Clean up your engine bay or replace your cracked unit with a new coolant expansion tank replacement kit.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2762975
Mfg#:
1J0121407FKT
Ships in 1 Business Day
$98.12

This product was last offered at the strikethrough price on
09-03-2026

$92.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

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

Brand:
URO - Corporate Logo
ES#:
2535175
Mfg#:
8D0121403L
In Stock
$25.99 USD
Free Shipping
on orders $49 and up
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

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
09-09-2026

$2.99 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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1863843
Mfg#:
8J0121407
Ships on Sep 28, 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
08-31-2026

$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

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

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.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3677963
Mfg#:
8T0121405KT
Ships in 10 Business Days
$348.99

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

$342.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Hose - Lower

ES#1833519 - 1K0122109CB - Expansion Tank Hose - Lower - Connects the thermostat to the expansion tank - Genuine Volkswagen Audi - Audi Volkswagen

Connects the thermostat to the expansion tank

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1833519
Mfg#:
1K0122109CB
Ships in 3 Business Days
6% off MSRP

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

$51.99

This product was last offered at the strikethrough price on
04-17-2026

$48.99 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 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

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
09-09-2026

$2.99 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#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
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
08-31-2026

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

Expansion Tank Hose - Lower

ES#315416 - 1K0122109AL - Expansion Tank Hose - Lower - Replace at the first signs of leakage - Genuine Volkswagen Audi - Audi Volkswagen

Replace at the first signs of leakage For vehicles with FSI engines only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
315416
Mfg#:
1K0122109AL
Ships in 2 Business Days
$83.99

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

$81.99 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

Aluminum Split Pipe Coolant Fitting

ES#2748757 - 006368ECS01A - Aluminum Split Pipe Coolant Fitting - Replaces the failure prone, plastic coolant split pipe from the turbo & expansion tank to the water pipe hose - ECS - Audi Volkswagen

Replaces the failure prone, plastic coolant split pipe from the turbo & expansion tank to the water pipe hose 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2748757
Mfg#:
006368ECS01A
In Stock
ON SALE! SAVE 96%
$67.99

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

$2.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
261042
Mfg#:
1J0121321B
Ships in 5 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.

$39.99

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

$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Upper Hose

ES#5433827 - 8K0121081AB - Expansion Tank Upper Hose - Overflow relief hose for the radiator - URO - Audi

Overflow relief hose for the radiator 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5433827
Mfg#:
8K0121081AB
In Stock
$23.50 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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