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Audi B5 A4 Quattro 1.8T

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Audi B5 A4 Quattro 1.8T Engine Cooling Parts

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Auxiliary Fan Clutch

ES#2187583 - 078121350A - Auxiliary Fan Clutch - Common cause of overheating issues - URO - Audi Volkswagen

Common cause of overheating issues 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2187583
Mfg#:
078121350A
Ships in 2 Business Days
$73.99 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
10-08-2026

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

Coolant Pipe - Return

ES#4846042 - 06B121065AC - Coolant Pipe - Return - Main return pipe that connects to the water pump and the heater core - Vaico - Audi

Main return pipe that connects to the water pump and the heater core We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4846042
Mfg#:
06B121065AC
Ships in 2 Business Days
$94.99

This product was last offered at the strikethrough price on
04-15-2026

$93.99 USD
Free Shipping
on orders $49 and up

Auxiliary Fan Control Unit

ES#250957 - 8D0959501D - Auxiliary Fan Control Unit - Controls the actuation of the radiator fan - Stribel - Audi

Controls the actuation of the radiator fan

Brand:
Stribel - Corporate Logo
ES#:
250957
Mfg#:
8D0959501D
Back Ordered
$275.99 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

Heater Core

ES#433318 - 8D1819030B - Heater Core - Stop coolant loss and cure a fogged windshield - Genuine Volkswagen Audi - Audi Volkswagen

Stop coolant loss and cure a fogged windshield

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
433318
Mfg#:
8D1819030B
Ships in 1-2 days
12% off MSRP

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

$311.99

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

$274.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

A/C Condenser Fan

ES#3189442 - 621-187 - A/C Condenser Fan - 200W - 280MM fan located in front of the AC condenser - Dorman - Audi

200W - 280MM fan located in front of the AC condenser

Brand:
Dorman - Corporate Logo
ES#:
3189442
Mfg#:
621-187
Ships in 4 Business Days
$265.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Blade

ES#3218972 - 078121301E - Auxiliary Fan Blade - For the belt driven auxiliary fan - URO - Audi Volkswagen

For the belt driven auxiliary fan 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3218972
Mfg#:
078121301E
Ships in 2 Business Days
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Cooler

ES#2826376 - 028117021L - Engine Oil Cooler - Common source of leaks, mounted between your oil filter and engine block - Nissens - Audi Volkswagen

Common source of leaks, mounted between your oil filter and engine block We Price Match - Give Us A Call or Chat!
From VIN 8D-X-300001, split is in the 1999 model year

Brand:
Nissens - Corporate Logo
ES#:
2826376
Mfg#:
028117021L
Ships in 2 Business Days
$65.99

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

$63.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt - Power Steering/Water Pump

ES#546 - 11X528 - Accessory Belt - Power Steering/Water Pump - Replace your cracked or worn belt - Continental - Audi Volkswagen

Replace your cracked or worn belt We Price Match - Give Us A Call or Chat!
Engine codes AEB & ATW

Brand:
Continental - Corporate Logo
ES#:
546
Mfg#:
11X528
Ships in 3 Business Days
$10.99 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 Flange Replacement Kit

ES#2804114 - 058121132CKT - Cooling Flange Replacement Kit - Cure the common coolant leak coming from the back of your engine compartment - Assembled By ECS - Audi

Cure the common coolant leak coming from the back of your engine compartment 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with AWM engine code only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804114
Mfg#:
058121132CKT
Ships in 6 Business Days
ON SALE! SAVE 10%
$54.99

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

$49.55 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2966326 - 8D0121403LxKT - Expansion Tank Replacement Kit - Install a brand new expansion tank with a new cap and hardware - Assembled By ECS - Audi Volkswagen

Install a brand new expansion tank with a new cap and hardware 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966326
Mfg#:
8D0121403LXKT
In Stock
ON SALE!
$49.99

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

$47.88 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Water Pump

ES#3183399 - 078121601B - Auxiliary Water Pump - Used as an after run pump on the V6 engine - Rein - Audi Volkswagen

Used as an after run pump on the V6 engine 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3183399
Mfg#:
078121601B
Ships in 4 Business Days
$118.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Hose - Return

ES#2627319 - 06B121058 - Oil Cooler Hose - Return - Connects the oil cooler to the hard water tube - Rein - Audi Volkswagen

Connects the oil cooler to the hard water tube 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2627319
Mfg#:
06B121058
In Stock at Vendor
$33.99 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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