Call Us330-331-2003 ChatLive Chat Text Us!
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle

Audi B5 Cooling Expansion Tank Parts

Sort By
Filter By
Return to Top
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 3 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
06-03-2026

$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!
Fits vehicles from VIN# 8D-W-007 800, Split is in model year 1998

Brand:
URO - Corporate Logo
ES#:
2535175
Mfg#:
8D0121403L
Ships in 2 Business Days
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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#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 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#:
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
06-03-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary 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 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
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 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#:
4004591
Mfg#:
5Q0121321
In Stock
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1692 - 1J0121321B - Expansion Tank Cap - Keep proper pressure in your coolant system - Febi - Audi Volkswagen Porsche

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
1692
Mfg#:
1J0121321B
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2966326 - 8D0121403LxKT - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Assembled By ECS - Audi Volkswagen

Install a brand new expansion tank with a new cap and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966326
Mfg#:
8D0121403LXKT
Ships in 3 Business Days
ON SALE!
$49.99

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

$47.88 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2594857 - 8D0121403L - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - Febi - 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!
From VIN 8D-W-007800, split is in the 1998 model year

Brand:
Febi - Corporate Logo
ES#:
2594857
Mfg#:
8D0121403L
In Stock at Vendor
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#261828 - 8D0121403L - Coolant Expansion Tank - Includes integrated coolant level sensor - Meyle - Audi Volkswagen

Includes integrated coolant level sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
From VIN 8D-W-007800, split is in the 1998 model year

Brand:
Meyle - Corporate Logo
ES#:
261828
Mfg#:
8D0121403L
Ships on Oct 14, 2026
$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2580975 - 8D0121403LKT - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Genuine Volkswagen Audi - Audi Volkswagen

Install a brand new expansion tank with a new cap and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From VIN 8D-W-007800, split is in the 1998 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2580975
Mfg#:
8D0121403LKT
Ships in 3 Business Days
$174.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2891455 - 811807577C - Expanding Nut - Priced Each - Install new hardware with your new parts. - Vaico - Audi Volkswagen

Install new hardware with your new parts. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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 3 Business Days
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#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#2535170 - 1J0121321B - Expansion Tank Cap - Keep proper pressure in your coolant system - URO - Audi Volkswagen

Keep proper pressure in your coolant system 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#:
2535170
Mfg#:
1J0121321B
In Stock
$5.99

This product was last offered at the strikethrough price on
03-02-2026

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818658
Mfg#:
5Q0121321
Ships in 2 Business Days
ON SALE! SAVE 24%
$15.99

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

$12.23 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

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings