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Audi B6 S4 V8 Engine Cooling Parts

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Expansion Tank Cap - Black

ES#4004591 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Rein - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4004591
Mfg#:
5Q0121321
In Stock
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Radiator

ES#3492551 - 8E0121212K - Auxiliary Radiator - Nissens - Audi

We Price Match - Give Us A Call or Chat!
Left

Brand:
Nissens - Corporate Logo
ES#:
3492551
Mfg#:
8E0121212K
Ships in 1 Business Day
$338.80 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Screw - Priced Each

ES#471868 - N91090701 - Screw - Priced Each - Install new hardware with your new parts. 5x20 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. 5x20 Used to secure the coolant expansion tank

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471868
Mfg#:
N91090701
In Stock
25% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$3.99

This product was last offered at the strikethrough price on
09-14-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flush Kit

ES#3420793 - g013a8jm1kt6KT - Coolant Flush Kit - Includes Schwaben coolant refill/air purge tool and 6 liters of G13 coolant. - Assembled By ECS - Audi

Includes Schwaben coolant refill/air purge tool and 6 liters of G13 coolant. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3420793
Mfg#:
G013A8JM1KT6KT
Ships in 10 Business Days
ON SALE!
$180.99

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

$167.41 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Radiator Hose - Upper

ES#3236055 - 8E0121070B - Radiator Hose - Upper - Includes quick disconnect piece - Feed Hose - Vaico - Audi

Includes quick disconnect piece - Feed Hose We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3236055
Mfg#:
8E0121070B
Ships in 1 Business Day
$341.99

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

$331.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler O-Ring - Priced Each

ES#284311 - 079103121AD - Oil Cooler O-Ring - Priced Each - Seals the connection between the oil cooler and the engine - Genuine Volkswagen Audi - Audi

Seals the connection between the oil cooler and the engine From VIN-8E-4-200001, split is in the 2004 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284311
Mfg#:
079103121AD
Ships in 1 day
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$19.99

This product was last offered at the strikethrough price on
09-14-2026

$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#2828407 - 079121014D - Water Pump - Does not include the full assembly - URO - Audi

Does not include the full assembly 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2828407
Mfg#:
079121014D
Ships in 1 Business Day
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#258900 - 8E1820031 - Heater Core - Stop coolant loss and cure a fogged windshield - Genuine Volkswagen Audi - Audi

Stop coolant loss and cure a fogged windshield

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
258900
Mfg#:
8E1820031
Ships in 4 Business Days
$287.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cooling Hose Retaining Clip - Priced Each

ES#307207 - 1J0121142 - Cooling Hose Retaining Clip - Priced Each - Secures the radiator hose to the flange. 32mm - Genuine Volkswagen Audi - Audi Volkswagen

Secures the radiator hose to the flange. 32mm

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307207
Mfg#:
1J0121142
In Stock
21% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$6.47

This product was last offered at the strikethrough price on
09-14-2026

$5.08 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Integrated Thermostat Housing Assembly

Includes thermostat and housing.

Brand:
Dorman - Corporate Logo
ES#:
4500721
Mfg#:
902-5162
Back Ordered
$292.99

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

$283.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Electric Cooling Fan - Left (400mm)

ES#3189441 - 621-186 - Electric Cooling Fan - Left (400mm) - Keep your cooling system operating properly - Dorman - Audi

Keep your cooling system operating properly

Brand:
Dorman - Corporate Logo
ES#:
3189441
Mfg#:
621-186
Ships in 4 Business Days
$278.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#2535131 - N90316802 - Sealing O-Ring - Priced Each - Seal for most clip-in cooling sensors/senders. M19.6x3.6mm - URO - Audi Volkswagen

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535131
Mfg#:
N90316802
In Stock
$1.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor With O-Ring & Clip - 4 Pin

ES#2802189 - 059919501AKT - Coolant Temperature Sensor With O-Ring & Clip - 4 Pin - Updated Green sensor with square/round connector. Please check existing sensor color - Rein - Audi Volkswagen

Updated Green sensor with square/round connector. Please check existing sensor color 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802189
Mfg#:
059919501AKT
In Stock
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling Hose Retaining Clip - Priced Each

ES#2538001 - 1J0121142 - Cooling Hose Retaining Clip - Priced Each - Secures the radiator hose flange in place. 32mm - Febi - Audi Volkswagen

Secures the radiator hose flange in place. 32mm We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2538001
Mfg#:
1J0121142
In Stock
$2.07 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Spring Band Clamp - Priced Each

ES#261790 - N90687201 - Spring Band Clamp - Priced Each - Ensure a leak free installation. 40x12 - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a leak free installation. 40x12 40x12 spring clamp used in many places on your European vehicles cooling system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
261790
Mfg#:
N90687201
In Stock
$6.99 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.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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