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Audi RS7 4.0T

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Audi RS7 4.0T Cooling Expansion Tank Parts

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Coolant Expansion Tank

ES#5492988 - 4G0121403AC - Coolant Expansion Tank - Replacement coolant reservoir to cure mysterious coolant leaks, resolve false dashboard warning lights, and restore cooling system integrity to your modern Audi. - Febi - Audi

Replacement coolant reservoir to cure mysterious coolant leaks, resolve false dashboard warning lights, and restore cooling system integrity to your modern Audi.

Brand:
Febi - Corporate Logo
ES#:
5492988
Mfg#:
4G0121403AC
Ships on Dec 28, 2026
$40.99 USD
Free Shipping
on orders $49 and up

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
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970169
Mfg#:
5Q0121321
Ships on Oct 15, 2026
$12.99 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 2 Business Days
$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 Kit

ES#5373592 - EPK0191 - Coolant Expansion Tank Kit - Kit includes expansion tank and a cap - Rein - Audi

Kit includes expansion tank and a cap 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5373592
Mfg#:
EPK0191
Ships in 4 Business Days
$67.99 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.

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Manufacturer names and/or part numbers are used only for identification purposes.

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