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Audi A4 Engine Cooling Parts

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Thermostat Assembly

ES#2582081 - 06B121111K - Thermostat Assembly - Includes housing, gasket & sensor - Vemo Q+ - Audi

Includes housing, gasket & sensor

Brand:
Vemo Q+ - Corporate Logo
ES#:
2582081
Mfg#:
06B121111K
Special Order: No Guaranteed ETA
$89.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Additional Water Pump

Connects to the turbo return hose and heater core supply hose We Price Match - Give Us A Call or Chat!
From the 2013 model year

Brand:
Vaico - Corporate Logo
ES#:
4039350
Mfg#:
059121012B
Special Order: No Guaranteed ETA
$198.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator

Ensure proper cooling for your engine with a new radiator. We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4819045
Mfg#:
8W0121251AK
Special Order: No Guaranteed ETA
$445.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Belt

Recommended to be replaced with the water pump 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5480519
Mfg#:
06H121605E
Special Order: No Guaranteed ETA
ON SALE! SAVE 10%
$24.99

This product was last offered at the strikethrough price on
10-08-2026

$22.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Plastic reservoir for the coolant system 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5397089
Mfg#:
8K0121403Q
Special Order: No Guaranteed ETA
ON SALE!
$27.19 USD
Free Shipping
on orders $49 and up

Radiator Installation Kit

ES#2586571 - 8E0121251A2KT - Radiator Installation Kit - Includes everything you need to install a new radiator - Assembled By ECS - Audi

Includes everything you need to install a new radiator 10X Entries Into Our F80 M3 Sweepstakes
Manual transmission vehicles

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586571
Mfg#:
8E0121251A2KT
Back Ordered
$249.80

This product was last offered at the strikethrough price on
08-04-2026

$238.14 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Oil Cooler Replacement Kit - Stage 2

ES#2973037 - 068117021BKT2 - Oil Cooler Replacement Kit - Stage 2 - Includes the necessary components to replace your oil cooler and perform an engine oil service - Assembled By ECS - Audi

Includes the necessary components to replace your oil cooler and perform an engine oil service 10X Entries Into Our F80 M3 Sweepstakes
Up to VIN 8D-X-199999, split is in the 1999 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2973037
Mfg#:
068117021BKT2
Back Ordered
ON SALE!
$179.99

This product was last offered at the strikethrough price on
06-16-2026

$178.04 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 3

ES#2608143 - 050121113CKT4 - Cooling System Refresh Kit - Level 3 - 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
Engine codes AEB & ATW from VIN 8D-X-500001, split is in the 1999 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2608143
Mfg#:
050121113CKT4
Back Ordered
ON SALE!
$193.99

This product was last offered at the strikethrough price on
10-29-2026

$193.51 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Replacement Kit

ES#2586882 - 8D0121403DKT - 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 VIN 8D-W-007799, split is in the 1998 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586882
Mfg#:
8D0121403DKT
Back Ordered
$59.99

This product was last offered at the strikethrough price on
09-03-2026

$57.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Radiator Installation Kit

ES#3659151 - 4b3121276aktKT - Radiator Installation Kit - Install new hardware with your new radiator - Assembled By ECS - Audi

Install new hardware with your new radiator 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3659151
Mfg#:
4B3121276AKTKT
Back Ordered
$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Replacement Kit - Stage 1

ES#2718902 - 068117021Bkt - Oil Cooler Replacement Kit - Stage 1 - Everything you need to replace your leaking oil cooler - Assembled By ECS - Audi

Everything you need to replace your leaking oil cooler 10X Entries Into Our F80 M3 Sweepstakes
Up to VIN 8D-X-199999, split is in the 1999 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2718902
Mfg#:
068117021BKT
Back Ordered
ON SALE! SAVE 24%
$90.52

This product was last offered at the strikethrough price on
06-16-2026

$68.36 USD
Free Shipping
This product is lifetime replacement eligible Lifetime 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

Radiator Fan Control Module (600W)

ES#5492686 - 8K0959501H - Radiator Fan Control Module (600W) - Direct OE-quality replacement solid-state fan control unit to cure runaway cooling fans, fix stop-and-go overheating, and restore precise thermal management to your Audi's cooling system. - Febi - Audi

Direct OE-quality replacement solid-state fan control unit to cure runaway cooling fans, fix stop-and-go overheating, and restore precise thermal management to your Audi's cooling system.

Brand:
Febi - Corporate Logo
ES#:
5492686
Mfg#:
8K0959501H
Special Order: No Guaranteed ETA
$210.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#5492873 - 8W0121405L - Coolant Expansion Tank - Coolant expansion tank to cure mysterious coolant loss, resolve false dashboard warnings, and restore reliable engine cooling and aesthetics to your B9 chassis Audi. - Febi - Audi

Coolant expansion tank to cure mysterious coolant loss, resolve false dashboard warnings, and restore reliable engine cooling and aesthetics to your B9 chassis Audi. For Vehicles with CYMC Engine Code Only

Brand:
Febi - Corporate Logo
ES#:
5492873
Mfg#:
8W0121405L
Special Order: No Guaranteed ETA
$78.99 USD
Free Shipping
on orders $49 and up

Water Pump Kit

ES#5491817 - 06L121012L - Water Pump Kit - Includes water pump, belt, union, and hardware - Febi - Audi Volkswagen

Includes water pump, belt, union, and hardware

Brand:
Febi - Corporate Logo
ES#:
5491817
Mfg#:
06L121012L
Special Order: No Guaranteed ETA
$439.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat (87°C)

ES#5492507 - 050121113C4 - Thermostat (87C) - Direct OE-quality replacement thermostat to cure overheating issues, resolve poor cabin heater performance, and ensure your engine reaches and maintains its ideal operating temperature. - Febi - Audi Volkswagen

Direct OE-quality replacement thermostat to cure overheating issues, resolve poor cabin heater performance, and ensure your engine reaches and maintains its ideal operating temperature.

Brand:
Febi - Corporate Logo
ES#:
5492507
Mfg#:
050121113C4
Special Order: No Guaranteed ETA
$8.99 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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