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Audi S4 Cooling System Service & Maintenance Parts

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Anti-Freeze Tester

ES#4337913 - CTAA195 - Anti-Freeze Tester - Tests all ethylene glycol solutions with radiator hot or cold - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Tests all ethylene glycol solutions with radiator hot or cold

Brand:
CTA Tools - Corporate Logo
ES#:
4337913
Mfg#:
CTAA195
Ships in 9 Business Days
Auto Notify
$9.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Includes integrated coolant level sensor 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5470754
Mfg#:
8W1121405N
Ships in 4 Business Days
$100.99 USD
Free Shipping
on orders $49 and up

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 3 Business Days
$226.99 USD
Free Shipping
on orders $49 and up
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!

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4691027
Mfg#:
8W1121405NKT
Ships in 3 Business Days
$565.99 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 5 Business Days
ON SALE!
$228.99

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

$222.08 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 on Sep 10, 2026
$434.99 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
Includes thermostat with housing.

Brand:
Assembled By ECS - Corporate Logo
ES#:
3677363
Mfg#:
079121111JKT6
Ships on Oct 6, 2026
Auto Notify
$674.99 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

Brand:
Assembled By ECS - Corporate Logo
ES#:
2796215
Mfg#:
078121121KKT1
Ships on Dec 18, 2026
ON SALE!
$221.99

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

$221.36 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Water Pump - 4 Bolt

New water pump. Does not include pulley We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4780888
Mfg#:
06M121013D
Special Order: No Guaranteed ETA
$244.99 USD
Free Shipping
on orders $49 and up

Supercharger Intercooler - Priced Each

Internal charge air cooler in the supercharger compressor 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5505050
Mfg#:
06E145621S
Ships on Dec 24, 2026
Auto Notify
$299.99 USD
This product is lifetime replacement eligible Lifetime Replacement

More About Cooling System Service & Maintenance Parts

From individual cooling system parts to full cooling system refresh kits and cooling system upgrades, we have it all right here so you can keep your engine temperature in check or improve cooling system performance to meet the demands you place on your car.

Let us help you find the parts that fit your Audi

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

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