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Audi S4 Engine Cooling Refresh Kits

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Cooling System Refresh Kit - Level 2

ES#3648524 - n90316802ktKT - 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! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Up to production date 5/1/2011

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648524
Mfg#:
N90316802KTKT
Ships in 3 Business Days
$477.99

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

$457.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

ES#3648526 - n90316802ktKT1 - 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! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
From production date 5/2/2011

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648526
Mfg#:
N90316802KTKT1
Ships in 3 Business Days
$477.99

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

$457.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#3648520 - g013a8j1gkt22KT - Cooling System Refresh Kit - Level 1 - Replace your thermostat and temp sensor with one kit! - Genuine Volkswagen Audi - Audi

Replace your thermostat and temp sensor with one kit! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648520
Mfg#:
G013A8J1GKT22KT
In Stock
$241.99

This product was last offered at the strikethrough price on
09-02-2026

$233.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

ES#2678366 - 06E121111ADKT3 - 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 Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
From production date 5/2/2011

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678366
Mfg#:
06E121111ADKT3
In Stock
ON SALE! SAVE 11%
$218.99

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

$195.92 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

ES#2678365 - 06E121111ADKT2 - 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 Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Up to production date 5/1/2011

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678365
Mfg#:
06E121111ADKT2
In Stock
ON SALE! SAVE 11%
$218.99

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

$195.92 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#2678364 - 06E121111ADKT - Cooling System Refresh Kit - Level 1 - Replace your thermostat and temp sensor with one kit! - Assembled By ECS - Audi
ECS Tuning recommends this product.

Replace your thermostat and temp sensor with one kit! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678364
Mfg#:
06E121111ADKT
In Stock
ON SALE! SAVE 13%
$118.99

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

$103.22 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#2608209 - 078121113FKT - Cooling System Refresh Kit - Level 1 - Replace your thermostat and temp sensors with one kit! - Assembled By ECS - Audi

Replace your thermostat and temp sensors with one kit! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Assembled By ECS - Corporate Logo
ES#:
2608209
Mfg#:
078121113FKT
Ships in 3 Business Days
ON SALE!
$101.99

This product was last offered at the strikethrough price on
10-20-2026

$100.42 USD
Free Shipping
This product is lifetime replacement eligible Partial 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! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4691027
Mfg#:
8W1121405NKT
Ships in 3 Business Days
$565.99

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

$545.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit

ES#3677363 - 079121111jKT6 - Cooling System Refresh Kit - Service your critical cooling system components with this complete kit, with Genuine Coolant. - Assembled By ECS - Audi

Service your critical cooling system components with this complete kit, with Genuine Coolant. 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Includes thermostat with housing.

Brand:
Assembled By ECS - Corporate Logo
ES#:
3677363
Mfg#:
079121111JKT6
Ships in 10 Business Days
$674.99

This product was last offered at the strikethrough price on
09-02-2026

$668.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

ES#2796215 - 078121121KKT1 - Cooling System Refresh Kit - Level 2 - Replace critical cooling system components and perform a proper coolant system flush! - Assembled By ECS - Audi

Replace critical cooling system components and perform a proper coolant system flush! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Assembled By ECS - Corporate Logo
ES#:
2796215
Mfg#:
078121121KKT1
Ships on Feb 23, 2027
ON SALE!
$221.99

This product was last offered at the strikethrough price on
08-24-2026

$218.08 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

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 Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Assembled By ECS - Corporate Logo
ES#:
4691355
Mfg#:
8W1121405N1KT
Back Ordered
$434.99

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

$328.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

More About Engine Cooling Refresh Kits

Stay ahead of cooling issues by servicing your cooling system with our curated cooling system service kits that include everything you need to bring your cooling system back up to snuff.

Let us help you find the parts that fit your Audi

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