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Volkswagen Golf VII Sportwagen 1.8T Gen3

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F80 M3 Sweepstakes Details
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Volkswagen Golf VII Sportwagen 1.8T Gen3 Cooling Expansion Tank Parts

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Expansion Tank Cap - Black

ES#3690266 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Vaico - Audi Volkswagen Porsche

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

Brand:
Vaico - Corporate Logo
ES#:
3690266
Mfg#:
5Q0121321
In Stock
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2709040 - 3B0121321 - Expansion Tank Cap - Keep proper pressure in your coolant system - URO - Audi Volkswagen

Keep proper pressure in your coolant system 2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2709040
Mfg#:
3B0121321
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Build-Your-Own Carbon Fiber Expansion Tank Cover Kit

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 10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4067034
Mfg#:
020807ECS01
Ships in 1 day
ON SALE!
Starting at $250.58 USD
Customize
Free Shipping
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
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vent Hose

ES#2737852 - 5Q0121447G - Vent Hose - Connects water pipe to expansion tank - Genuine Volkswagen Audi - Volkswagen

Connects water pipe to expansion tank

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2737852
Mfg#:
5Q0121447G
In Stock
17% off MSRP

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

$29.99

This product was last offered at the strikethrough price on
10-05-2026

$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

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 10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818658
Mfg#:
5Q0121321
In Stock
ON SALE! SAVE 20%
$15.99

This product was last offered at the strikethrough price on
11-07-2026

$12.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VWR Billet Expansion Cap & Washer Fluid Reservoir Cap

ES#5481518 - vwr19g703KT - VWR Billet Expansion Cap & Washer Fluid Reservoir Cap - Doesn't your pride and joy deserve better than plastic parts in the engine bay? - Racingline - Volkswagen

Doesn't your pride and joy deserve better than plastic parts in the engine bay?

Brand:
Racingline - Corporate Logo
ES#:
5481518
Mfg#:
VWR19G703KT
Ships in 1-3 days
ON SALE! SAVE 15%
$223.99

This product was last offered at the strikethrough price on
11-09-2026

$189.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Kit

ES#3672037 - 5q0121321KT - Coolant Expansion Tank Kit - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank replacement kit. - Assembled By ECS - Audi Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank replacement kit. 10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3672037
Mfg#:
5Q0121321KT
Ships on Dec 2, 2026
ON SALE! SAVE 10%
$85.99

This product was last offered at the strikethrough price on
11-07-2026

$77.36 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Expansion Tank

ES#5492414 - 5Q0121407A - Expansion Tank - Direct OE-quality replacement coolant reservoir to cure cracked plastic seams, eliminate false "Low Coolant" dash warnings, and prevent catastrophic silicate bag failure. - Febi - Audi Volkswagen

Direct OE-quality replacement coolant reservoir to cure cracked plastic seams, eliminate false "Low Coolant" dash warnings, and prevent catastrophic silicate bag failure.

Brand:
Febi - Corporate Logo
ES#:
5492414
Mfg#:
5Q0121407A
Ships on Jan 11, 2027
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Expansion Tank Cap

ES#4140296 - L111B - Billet Expansion Tank Cap - Complete billet aluminum coolant cap assembly to replace your blue or black plastic cap - LEYO - Volkswagen

Complete billet aluminum coolant cap assembly to replace your blue or black plastic cap

Brand:
LEYO - Corporate Logo
ES#:
4140296
Mfg#:
L111B
Ships on Nov 25, 2026
$77.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank Hose Kit

ES#5482582 - 5q0121447gktKT - Coolant Expansion Tank Hose Kit - Eliminate brittle quick-connect leaks and completely refresh your reservoir plumbing with this direct-fit auxiliary coolant hose bundle. - Genuine Volkswagen Audi - Volkswagen

Eliminate brittle quick-connect leaks and completely refresh your reservoir plumbing with this direct-fit auxiliary coolant hose bundle.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
5482582
Mfg#:
5Q0121447GKTKT
Ships in 1 day
$62.99

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

$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

ES#3970169 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Meyle - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970169
Mfg#:
5Q0121321
Ships on Dec 2, 2026
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bracket for Coolant reservoir

ES#2741513 - 5Q0121409A - Bracket for Coolant reservoir - Expansion tank bracket welded to vehicle frame - Genuine Volkswagen Audi - Volkswagen

Expansion tank bracket welded to vehicle frame

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2741513
Mfg#:
5Q0121409A
Ships in 3 Business Days
$6.99 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

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.

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