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Audi S4 Engine Cooling Refresh Kits

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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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to production date 5/1/2011

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648524
Mfg#:
N90316802KTKT
Ships in 2 Business Days
$476.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From production date 5/2/2011

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648526
Mfg#:
N90316802KTKT1
Ships in 2 Business Days
$476.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678364
Mfg#:
06E121111ADKT
In Stock
ON SALE! SAVE 20%
$129.99

This product was last offered at the strikethrough price on
01-03-2026

$104.45 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648520
Mfg#:
G013A8J1GKT22KT
In Stock
$240.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From production date 5/2/2011

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678366
Mfg#:
06E121111ADKT3
In Stock
ON SALE!
$222.99

This product was last offered at the strikethrough price on
01-03-2026

$208.69 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Up to production date 5/1/2011

Brand:
Assembled By ECS - Corporate Logo
ES#:
2678365
Mfg#:
06E121111ADKT2
In Stock
ON SALE!
$222.99

This product was last offered at the strikethrough price on
01-03-2026

$208.69 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2608209
Mfg#:
078121113FKT
In Stock
ON SALE! SAVE 19%
$109.99

This product was last offered at the strikethrough price on
01-03-2026

$89.44 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Includes thermostat with housing.

Brand:
Assembled By ECS - Corporate Logo
ES#:
3677363
Mfg#:
079121111JKT6
In Stock at Vendor
$683.99

This product was last offered at the strikethrough price on
02-16-2026

$673.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4691027
Mfg#:
8W1121405NKT
Ships in 2 Business Days
$577.99

This product was last offered at the strikethrough price on
01-07-2026

$564.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4691355
Mfg#:
8W1121405N1KT
Ships in 10 Business Days
$434.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2796215
Mfg#:
078121121KKT1
Ships on Sep 30, 2026
ON SALE!
$204.99

This product was last offered at the strikethrough price on
01-03-2026

$187.68 USD
Free Shipping
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.

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