Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

Audi B8 Cooling Expansion Tank Parts

Sort By
Filter By
Return to Top

Expansion Tank Cap

ES#2802007 - 1J0121321B - Expansion Tank Cap - Keep proper pressure on your coolant - Rein - Audi Volkswagen Porsche

Keep proper pressure on your coolant 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802007
Mfg#:
1J0121321B
Ships on Nov 10, 2026
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2815697 - 3B0121321 - Expansion Tank Cap - Keep proper pressure in your coolant system - Hamburg Tech - Audi Volkswagen

Keep proper pressure in your coolant system We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2815697
Mfg#:
3B0121321
Ships in 1 Business Day
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3672033 - 3C0121321 - Expansion Tank Cap - Keep proper pressure in your coolant system - Stant - Audi Volkswagen Porsche

Keep proper pressure in your coolant system

Brand:
Stant - Corporate Logo
ES#:
3672033
Mfg#:
3C0121321
Back Ordered
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#5470726 - 80A121405AQ - Coolant Expansion Tank - See your coolant levels clearly again, comes with coolant level sensor - Rein - Audi

See your coolant levels clearly again, comes with coolant level sensor 2X Entries Into Our F80 M3 Sweepstakes
For vehicles with model year up through 2020 (engine code DJYA)

Brand:
Rein - Corporate Logo
ES#:
5470726
Mfg#:
80A121405AQ
Ships in 3 Business Days
$68.99 USD
Free Shipping
on orders $49 and up

Plastic Coolant Hose

ES#5341424 - 80A121081S - Plastic Coolant Hose - Connects the expansion tank to the radiator - Rein - Audi

Connects the expansion tank to the radiator 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5341424
Mfg#:
80A121081S
Ships in 3 Business Days
$58.99 USD
Free Shipping
on orders $49 and up

Coolant T Connector

ES#4899607 - N90692901 - Coolant T Connector - Connects to the lower radiator hose - Rein - Audi Volkswagen

Connects to the lower radiator hose 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Connects lower radiator hose to the coolant expansion tank hose and water pump hose

Brand:
Rein - Corporate Logo
ES#:
4899607
Mfg#:
N90692901
Ships in 3 Business Days
$9.99 USD
Free Shipping
on orders $49 and up

Coolant Overflow Hose

ES#5433823 - 8R0121081M - Coolant Overflow Hose - Expansion Tank To Radiator - URO - Audi

Expansion Tank To Radiator 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5433823
Mfg#:
8R0121081M
Ships in 1 Business Day
$43.99 USD
Free Shipping
on orders $49 and up

Engine Coolant Reservoir Cap

ES#5528431 - 4M0121321Q - Engine Coolant Reservoir Cap - Keep proper pressure in your coolant system - URO - Audi

Keep proper pressure in your coolant system 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5528431
Mfg#:
4M0121321Q
Ships in 1 Business Day
$26.99 USD
Free Shipping
on orders $49 and up

Expansion Tank

ES#5528528 - 80A121405AQ - Expansion Tank - URO - Audi

2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5528528
Mfg#:
80A121405AQ
Ships in 1 Business Day
$59.99 USD
Free Shipping
on orders $49 and up

VW | Expansion Tank, coolant

ES#4864980 - 8K0121403AC - VW | Expansion Tank, coolant - Vaico - Audi

We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4864980
Mfg#:
8K0121403AC
Ships in 1 Business Day
$53.99

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

$51.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Replacement Kit

ES#2678371 - 8K0121405NKT2 - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Genuine Volkswagen Audi - Audi

Install a brand new expansion tank with a new cap and hardware

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2678371
Mfg#:
8K0121405NKT2
Ships in 1-2 days
$236.99

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

$226.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Bracket

Expansion tank bracket that bolts up to the vehicle frame

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3212558
Mfg#:
80A121232AQ
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.

$55.99

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

$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Upper Hose

Connects the expansion tank to the coolant flange Up to production date 4/9/2012

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2785693
Mfg#:
8K0121081BT
Ships in 6 Business Days
12% off MSRP

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

$149.99

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

$131.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#4901309 - 8K0121403AC - Coolant Expansion Tank - Plastic reservoir for the coolant system - Meyle - Audi

Plastic reservoir for the coolant system 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4901309
Mfg#:
8K0121403AC
Ships on Nov 16, 2026
$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose - Upper

Connects the expansion tank to the cylinder head flange We Price Match - Give Us A Call or Chat!
Up to production date 4/9/2012

Brand:
Vaico - Corporate Logo
ES#:
4819054
Mfg#:
8R0121081
Special Order: No Guaranteed ETA
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Plastic reservoir for the coolant system 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5397089
Mfg#:
8K0121403Q
Special Order: No Guaranteed ETA
ON SALE! SAVE 16%
$30.99

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

$26.00 USD
Free Shipping
on orders $49 and up

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 Your Privacy Choices Cookie Policy ECS Tuning is part of Enthusiast Auto Holdings