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Audi S4 Coolant Expansion Tank Kits

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Expansion Tank Replacement Kit

ES#2678370 - 8K0121405NKT - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Assembled By ECS - Audi

Install a brand new expansion tank with a new cap and hardware 10X Entries Into Our F80 M3 Sweepstakes
From production date 5/2/2011

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678370
Mfg#:
8K0121405NKT
In Stock
ON SALE!
$86.99

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

$83.63 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2637203 - 8E0121403FKT1 - 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#:
2637203
Mfg#:
8E0121403FKT1
Ships in 10 Business Days
$167.99

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

$164.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2637204 - 8E0121403FKT2 - Expansion Tank Replacement Kit - Everything you need to replace your faded, cracked, or leaky expansion tank! - Assembled By ECS - Audi

Everything you need to replace your faded, cracked, or leaky expansion tank! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2637204
Mfg#:
8E0121403FKT2
Ships on Oct 6, 2026
Auto Notify
ON SALE! SAVE 14%
$62.99

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

$54.44 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#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
Auto Notify
$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#2678373 - 8K0121405FKT - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Assembled By ECS - Audi

Install a brand new expansion tank with a new cap and hardware 10X Entries Into Our F80 M3 Sweepstakes
Up to production date 5/1/2011

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678373
Mfg#:
8K0121405FKT
Ships in 1-2 days
ON SALE! SAVE 11%
$87.99

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

$78.33 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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 From production date 5/2/2011

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

$231.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#4810244 - 8w1121405n2KT - Expansion Tank Replacement Kit - Genuine Volkswagen Audi - Audi

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4810244
Mfg#:
8W1121405N2KT
Ships in 1-2 days
$226.99

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

$219.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Replacement Kit

ES#2678372 - 8K0121405FKT2 - 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 Up to production date 5/1/2011

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2678372
Mfg#:
8K0121405FKT2
Ships in 1-2 days
$236.99

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

$231.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 2

ES#4691027 - 8W1121405NKT - Cooling System Refresh Kit - Level 2 - Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! - Genuine Volkswagen Audi - Audi

Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush!

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4691027
Mfg#:
8W1121405NKT
Ships in 1-2 days
$565.99

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

$557.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Replacement Kit

ES#4810246 - 8W1121405N3KT - Expansion Tank Replacement Kit - Freshen up your engine bay! - Assembled By ECS - Audi

Freshen up your engine bay! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4810246
Mfg#:
8W1121405N3KT
Ships in 4 Business Days
ON SALE!
$228.99

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

$219.20 USD
Free Shipping
on orders $49 and up

Cooling System Refresh Kit - Level 2

ES#4691355 - 8W1121405N1KT - Cooling System Refresh Kit - Level 2 - Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! - Assembled By ECS - Audi

Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4691355
Mfg#:
8W1121405N1KT
Ships in 10 Business Days
$434.99

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

$433.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

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