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Audi B6 A4 Quattro 1.8T

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Audi B6 A4 Quattro 1.8T Engine Cooling Parts

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Radiator Hose - Lower

ES#2803798 - 8E0121055E - Radiator Hose - Lower - Runs from the radiator to the water pipe. - Rein - Audi

Runs from the radiator to the water pipe. We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803798
Mfg#:
8E0121055E
Ships in 3 Business Days
$97.99

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

$65.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler

Common source of undiscoverable coolant leaks We Price Match - Give Us A Call or Chat!

Brand:
Nissens - Corporate Logo
ES#:
3988406
Mfg#:
028117021K
Ships in 2 Business Days
$65.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heat Deflector Wrap

ES#274870 - 037971461 - Heat Deflector Wrap - Protects rubber from heat from turbocharger - Genuine Volkswagen Audi - Audi Volkswagen

Protects rubber from heat from turbocharger

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
274870
Mfg#:
037971461
Ships on Sep 10, 2026
11% off MSRP

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

$36.99

This product was last offered at the strikethrough price on
08-22-2026

$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bleeder Screw - Metal

ES#470119 - N90534203 - Bleeder Screw - Metal - Located in the water pipe - Genuine Volkswagen Audi - Audi

Located in the water pipe Up to VIN# 8E-4-170 000, split is in 2003 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470119
Mfg#:
N90534203
Ships in 1-2 days
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose

ES#2803793 - 06D121082B - Coolant Hose - Connects the distribution pipe to the hard pipe leading to the turbo - Rein - Audi

Connects the distribution pipe to the hard pipe leading to the turbo We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803793
Mfg#:
06D121082B
In Stock at Vendor
$7.71 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3189293 - 603-638 - Coolant Expansion Tank - Plastic reservoir for cooling system - Dorman - Audi

Plastic reservoir for cooling system

Brand:
Dorman - Corporate Logo
ES#:
3189293
Mfg#:
603-638
Ships in 4 Business Days
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug - Priced Each

ES#333289 - 357121140 - Coolant Flange Plug - Priced Each - Prevent leaks with a new plug - Genuine Volkswagen Audi - Audi Volkswagen

Prevent leaks with a new plug

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
333289
Mfg#:
357121140
Ships in 1-2 days
14% off MSRP

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

$13.99

This product was last offered at the strikethrough price on
08-22-2026

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

Expansion Tank Cap

ES#4220586 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Rein - Audi

Plastic pressure cap for expansion tank We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4220586
Mfg#:
8E0121321
In Stock at Vendor
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#3353262 - N90365302 - Sealing O-Ring - Priced Each - Genuine Porsche - Audi Volkswagen

O-Ring for the faulty coolant "J-Plug" that is located next to the thermostat.

Brand:
Genuine Porsche - Corporate Logo
ES#:
3353262
Mfg#:
N90365302
Ships in 4 Business Days
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Cooler

ES#2873160 - 028117021L - Engine Oil Cooler - Common source of leaks, mounted between your oil filter and engine block - Febi - Audi Volkswagen

Common source of leaks, mounted between your oil filter and engine block We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2873160
Mfg#:
028117021L
Ships in 1-2 days
$76.99

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

$54.99 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#2649750 - 059919501AKT3 - Coolant Temperature Sensor With O-Ring & Clip - 4 Pin - Updated Green sensor with square/round connector. Please check existing sensor color - Vemo - Audi Volkswagen

Updated <font color='green'>Green</font> sensor with square/round connector. Please check existing sensor color Located in the coolant flange

Brand:
Vemo - Corporate Logo
ES#:
2649750
Mfg#:
059919501AKT3
In Stock
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core Hose - Supply

ES#4880699 - 8E1819371B - Heater Core Hose - Supply - Connects the flange to the heater core pipe - URO - Audi

Connects the flange to the heater core pipe We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4880699
Mfg#:
8E1819371B
Back Ordered
Auto Notify
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core Pipe Set

ES#442058 - 8E1898350 - Heater Core Pipe Set - Connects the heater core to the coolant hoses - Genuine Volkswagen Audi - Audi

Connects the heater core to the coolant hoses

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
442058
Mfg#:
8E1898350
Ships in 3 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.

$57.99

This product was last offered at the strikethrough price on
08-22-2026

$51.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose

ES#280016 - 06B121101A - Coolant Hose - Connects the hard water pipe to the rear coolant flange - Genuine Volkswagen Audi - Audi

Connects the hard water pipe to the rear coolant flange

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280016
Mfg#:
06B121101A
Ships in 4 Business Days
$50.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#3624900 - 059919501A - Coolant Temperature Sensor - Revised green 4 pin sensor, located in the cooling flange located on the side of the cylinder head - FAE - Audi Volkswagen

Revised green 4 pin sensor, located in the cooling flange located on the side of the cylinder head Located in the coolant flange

Brand:
FAE - Corporate Logo
ES#:
3624900
Mfg#:
059919501A
Ships on Sep 9, 2026
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upper Radiator Hose

ES#3463367 - 8E0121101 - Upper Radiator Hose - Connects the upper radiator to the expansion tank and thermostat housing - Hudson - Audi

Connects the upper radiator to the expansion tank and thermostat housing

Brand:
Hudson - Corporate Logo
ES#:
3463367
Mfg#:
8E0121101
Ships in 1-2 days
$50.20 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.

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