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Audi S4 Engine Cooling Parts

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Radiator Installation Kit

ES#3677745 - 4b3121276aktKT1 - Radiator Installation Kit - Don't reuse old worn radiator mounts - Assembled By ECS - Audi

Don't reuse old worn radiator mounts 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3677745
Mfg#:
4B3121276AKTKT1
Back Ordered
$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Installation Kit

ES#2593798 - 4B3121200KT1 - Radiator Installation Kit - Don't reuse old worn radiator mounts - Assembled By ECS - Audi

Don't reuse old worn radiator mounts 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2593798
Mfg#:
4B3121200KT1
Back Ordered
$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime 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

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

$329.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Auxiliary Fan Switch (87-93°C) - 3 Pin

ES#3625382 - 251959481K - Auxiliary Fan Switch (87-93C) - 3 Pin - Located on the lower side of the radiator, comes with paper gasket - FAE - Audi Volkswagen

Located on the lower side of the radiator, comes with paper gasket

Brand:
FAE - Corporate Logo
ES#:
3625382
Mfg#:
251959481K
Back Ordered
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Coolant Pipe With Gaskets

ES#3622462 - 079121071aaKT - Cylinder Head Coolant Pipe With Gaskets - This hard pipe is the coolant supply pipe for the cylinder heads - Includes gaskets - Genuine Volkswagen Audi - Audi

This hard pipe is the coolant supply pipe for the cylinder heads - Includes gaskets From VIN 8E-4-189001, split is in the 2004 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3622462
Mfg#:
079121071AAKT
Back Ordered
$935.99

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

$901.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Electric Fan Assembly - 280mm

ES#2153950 - 4A0959455B - Electric Fan Assembly - 280mm - Replace your dead fan motor - MTC - Audi

Replace your dead fan motor

Brand:
MTC - Corporate Logo
ES#:
2153950
Mfg#:
4A0959455B
Back Ordered
$103.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upper Radiator Mount - Priced Each

ES#2587497 - 4B3121276A - Upper Radiator Mount - Priced Each - Stabilizes the radiator within the core support - OE Aftermarket - Audi

Stabilizes the radiator within the core support

Brand:
OE Aftermarket - Corporate Logo
ES#:
2587497
Mfg#:
4B3121276A
Back Ordered
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lower Radiator Mount - Priced Each

ES#2587495 - 4B3121275 - Lower Radiator Mount - Priced Each - Stabilizes the radiator within the core support - OE Aftermarket - Audi

Stabilizes the radiator within the core support

Brand:
OE Aftermarket - Corporate Logo
ES#:
2587495
Mfg#:
4B3121275
Back Ordered
$13.99

This product was last offered at the strikethrough price on
05-07-2026

$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug

ES#250205 - 8D0121100 - Radiator Drain Plug - Used for quick removal of coolant - Original Equipment Supplier - Audi Volkswagen

Used for quick removal of coolant

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
250205
Mfg#:
8D0121100
Back Ordered
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

OE+ Upgraded Aluminum Coolant Return Pipe

ES#5515606 - 06E121065Nu - OE+ Upgraded Aluminum Coolant Return Pipe - Permanently solve a notorious Audi V6 cooling system weak point by replacing the failure-prone factory plastic heater pipe with this upgraded aluminum version. - Rein - Audi

Permanently solve a notorious Audi V6 cooling system weak point by replacing the failure-prone factory plastic heater pipe with this upgraded aluminum version. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5515606
Mfg#:
06E121065NU
Back Ordered
$40.99 USD
Free Shipping
on orders $49 and up

Auxiliary Water Pump

ES#5528515 - 06H121601M - Auxiliary Water Pump - URO - Audi Volkswagen

2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5528515
Mfg#:
06H121601M
Back Ordered
$64.99 USD
Free Shipping
on orders $49 and up

VAG | Radiator Hose

ES#4859635 - 06E121546 - VAG | Radiator Hose - Vaico - Audi

We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4859635
Mfg#:
06E121546
Special Order: No Guaranteed ETA
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VAG | Radiator Hose

ES#4859634 - 06E121545 - VAG | Radiator Hose - Vaico - Audi

We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4859634
Mfg#:
06E121545
Special Order: No Guaranteed ETA
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Fan Clutch

ES#2899093 - 4A0121350B - Radiator Fan Clutch - Stay cool at traffic lights. - Vemo - Audi

Stay cool at traffic lights.

Brand:
Vemo - Corporate Logo
ES#:
2899093
Mfg#:
4A0121350B
Special Order: No Guaranteed ETA
$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Fan Switch Gasket

ES#4852722 - N0438083 - Radiator Fan Switch Gasket - Vemo Q+ - Audi Volkswagen

Brand:
Vemo Q+ - Corporate Logo
ES#:
4852722
Mfg#:
N0438083
Special Order: No Guaranteed ETA
$2.55 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87C

Prevent overheating and premature engine wear 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940301
Mfg#:
078121113F
Special Order: No Guaranteed ETA
ON SALE! SAVE 29%
$16.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Cooling Parts

Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.

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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