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Audi A4 Engine Cooling Parts

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Cooling System Refresh Kit - Level 1

ES#2581800 - 8d0959481bkt-2 - Cooling System Refresh Kit - Level 1 - Replace your thermostat and temp sensors with one kit! - Assembled By ECS - Audi

Replace your thermostat and temp sensors with one kit! 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#:
2581800
Mfg#:
8D0959481BKT-2
In Stock
ON SALE!
$99.99

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

$92.15 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#2581805 - 8d0959481bkt-3 - Cooling System Refresh Kit - Level 1 - Replace your thermostat and temp sensors with one kit! - Assembled By ECS - Audi

Replace your thermostat and temp sensors with one kit! 10X Entries Into Our F80 M3 Sweepstakes
Engine code AWM from VIN 8D-X-500001, split is in the 1999 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2581805
Mfg#:
8D0959481BKT-3
In Stock
ON SALE!
$99.99

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

$92.11 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Hard Coolant Pipe

ES#280424 - 06D121065L - Hard Coolant Pipe - Located between main coolant flange hard pipe and thermostat housing - Genuine Volkswagen Audi - Audi

Located between main coolant flange hard pipe and thermostat housing

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280424
Mfg#:
06D121065L
Ships in 6 Business Days
10% off MSRP

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

$101.99

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

$91.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#3448101 - 8D1819030B - Heater Core - Stop coolant loss and cure a fogged windshield - Behr - Audi Volkswagen

Stop coolant loss and cure a fogged windshield

Brand:
Behr - Corporate Logo
ES#:
3448101
Mfg#:
8D1819030B
Special Order: No Guaranteed ETA
$91.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Return

ES#4899633 - 06E121065N - Coolant Pipe - Return - Main return pipe that connects to the heater core hoses and the engine - Rein - Audi

Main return pipe that connects to the heater core hoses and the engine 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4899633
Mfg#:
06E121065N
In Stock at Vendor
$45.99 USD
Free Shipping
on orders $49 and up

Oil Cooler

ES#4335424 - 06E117021G - Oil Cooler - Common source of undiscoverable coolant leaks - OE Aftermarket - Audi

Common source of undiscoverable coolant leaks

Brand:
OE Aftermarket - Corporate Logo
ES#:
4335424
Mfg#:
06E117021G
Ships on Oct 1, 2026
$90.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Throttle Body Coolant Hose - Right

ES#4818504 - 078121188A - Throttle Body Coolant Hose - Right - Connects the coolant pipe to the throttle body - Bremmen Parts - Audi Volkswagen

Connects the coolant pipe to the throttle body 10X Entries Into Our F80 M3 Sweepstakes

Engine code ATQ

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818504
Mfg#:
078121188A
In Stock
ON SALE! SAVE 28%
$17.99

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

$12.99 USD
Free Shipping
on orders $49 and up

Cooling System Refresh Kit - Level 1

ES#2608151 - 06D121111GKT3 - Cooling System Refresh Kit - Level 1 - Replace your thermostat and temp sensors with one kit! - Assembled By ECS - Audi

Replace your thermostat and temp sensors with one kit! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2608151
Mfg#:
06D121111GKT3
In Stock
ON SALE! SAVE 19%
$111.99

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

$90.68 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Radiator Hose - Upper

ES#2627318 - 8D0121101AF - Radiator Hose - Upper - Runs from radiator to reservoir and water pipe - Rein - Audi Volkswagen

Runs from radiator to reservoir and water pipe 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Fits from VIN 8D-T-236 145 - Split is in the 1996 model year

Brand:
Rein - Corporate Logo
ES#:
2627318
Mfg#:
8D0121101AF
Ships in 4 Business Days
$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fan Relay "219"

ES#360041 - 443951253AA - Fan Relay "219" - A failed 219 relay can leave your fan running and cause a dead battery - Genuine Volkswagen Audi - Audi

A failed 219 relay can leave your fan running and cause a dead battery Used for fan control

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
360041
Mfg#:
443951253AA
Special Order: No Guaranteed ETA
2% off MSRP

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

$91.65

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

$89.94 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2804447 - 06B121121L - Thermostat Housing - Located on the left side of the engine block - Bremmen Parts - Audi Volkswagen

Located on the left side of the engine block 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
2804447
Mfg#:
06B121121L
In Stock
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Torx Screw - Priced Each

ES#470772 - N90785002 - Torx Screw - Priced Each - Install new hardware with your new parts. M5x14.5 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M5x14.5 Secures the fans to the shroud

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470772
Mfg#:
N90785002
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

Hose Clamp - Priced Each

ES#263953 - N10258101 - Hose Clamp - Priced Each - Install new clamps to stay leak free. 23-35x9x.5 - Genuine Volkswagen Audi - Audi Volkswagen

Install new clamps to stay leak free. 23-35x9x.5 Engine codes AEB & ATW. Secures the water pump hose to the water pump.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
263953
Mfg#:
N10258101
In Stock
3% off MSRP

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

$7.10

This product was last offered at the strikethrough price on
07-15-2026

$6.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#2816375 - 8E1820031 - Heater Core - Stop coolant loss and cure a fogged windshield - Hamburg Tech - Audi

Stop coolant loss and cure a fogged windshield We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2816375
Mfg#:
8E1820031
Ships in 2 Business Days
$88.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Water Pump

ES#3524512 - 06E121018B - Heavy Duty Water Pump - Features a metal impeller - Meyle HD - Audi

Features a metal impeller 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle HD - Corporate Logo
ES#:
3524512
Mfg#:
06E121018B
Ships on Dec 4, 2026
$88.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 1

ES#2581797 - 8d0959481bkt-1 - Cooling System Refresh Kit - Level 1 - Replace your thermostat and temp sensors with one kit! - Assembled By ECS - Audi

Replace your thermostat and temp sensors with one kit! 10X Entries Into Our F80 M3 Sweepstakes
Engine code AEB up to VIN 8D-X-500000, split is in the 1999 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2581797
Mfg#:
8D0959481BKT-1
Ships in 2 Business Days
ON SALE!
$90.99

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

$88.97 USD
Free Shipping
This product is lifetime replacement eligible Partial 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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