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Volkswagen MK4 Engine Cooling Parts

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Expansion Tank Cap - Black

ES#4818658 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Bremmen Parts - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818658
Mfg#:
5Q0121321
In Stock
ON SALE! SAVE 15%
$15.99

This product was last offered at the strikethrough price on
09-16-2026

$13.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Tester

ES#2696212 - V99-1005 - Coolant Tester - Make sure your coolant is safe from freezing! - Vaico - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Make sure your coolant is safe from freezing! We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2696212
Mfg#:
V99-1005
Back Ordered
$51.99

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

$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose

ES#307284 - 1J0122157DN - Coolant Hose - Runs from the throttle body to multiple points in the cooling system - Genuine Volkswagen Audi - Volkswagen

Runs from the throttle body to multiple points in the cooling system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307284
Mfg#:
1J0122157DN
Ships in 9 Business Days
7% off MSRP

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

$203.99

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

$188.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spring Band Clamp - Priced Each

ES#2801336 - N90687201 - Spring Band Clamp - Priced Each - Ensure a leak free installation. 40x12 - Rein - Audi Volkswagen

Ensure a leak free installation. 40x12 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801336
Mfg#:
N90687201
In Stock at Vendor
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling Hose

ES#12032 - 022121049B - Cooling Hose - From oil cooler to water pipe - Genuine Volkswagen Audi - Audi Volkswagen

From oil cooler to water pipe

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
12032
Mfg#:
022121049B
Ships on Oct 19, 2026
6% off MSRP

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

$99.99

This product was last offered at the strikethrough price on
10-01-2026

$93.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Control Unit

ES#2814378 - 1J0919506K - Auxiliary Fan Control Unit - 1 large 4 pin connector and 1 small 14 pin connector - Hamburg Tech - Audi Volkswagen

1 large 4 pin connector and 1 small 14 pin connector We Price Match - Give Us A Call or Chat!
For vehicles with VIN from 9M-Y-000 001 only, split is in the 2000 model year

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814378
Mfg#:
1J0919506K
In Stock at Vendor
$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

O-Ring - Priced Each

ES#4197 - N10139201 - O-Ring - Priced Each - O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55 - Rein - Audi Volkswagen

O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4197
Mfg#:
N10139201
In Stock
$4.28 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank - With Cap

ES#3189262 - 603-027 - Coolant Expansion Tank - With Cap - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - Dorman - Audi Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank

Brand:
Dorman - Corporate Logo
ES#:
3189262
Mfg#:
603-027
Ships in 5 Business Days
$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Fan Control Module

ES#3235542 - 1J0919506N - Radiator Fan Control Module - Controls fan function of your main cooling fan - Gates - Volkswagen

Controls fan function of your main cooling fan

Brand:
Gates - Corporate Logo
ES#:
3235542
Mfg#:
1J0919506N
Ships on Oct 22, 2026
$179.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Distribution Pipe

ES#307173 - 1J0121087C - Coolant Distribution Pipe - Plastic 3-way outlet at upper radiator hose - Genuine Volkswagen Audi - Audi Volkswagen

Plastic 3-way outlet at upper radiator hose

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307173
Mfg#:
1J0121087C
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.

$40.99

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

$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler O-Ring

ES#275103 - 038117070 - Oil Cooler O-Ring - O-Ring between cover & oil cooler. 62.8mm - Genuine Volkswagen Audi - Volkswagen

O-Ring between cover & oil cooler. 62.8mm

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275103
Mfg#:
038117070
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.

$18.99

This product was last offered at the strikethrough price on
10-01-2026

$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose - Upper

ES#307259 - 1J0122101A - Radiator Hose - Upper - Upper radiator hose - Genuine Volkswagen Audi - Volkswagen

Upper radiator hose For vehicles with manual transmission from the 2002 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307259
Mfg#:
1J0122101A
Ships on Oct 20, 2026
7% off MSRP

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

$189.99

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

$176.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heater Core Hose

ES#3469664 - 1J0122157EM - Heater Core Hose - From cylinder head coolant flange to passenger side of the heater core - Rein - Volkswagen

From cylinder head coolant flange to passenger side of the heater core 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Fits vehicles with AVH,AZG, BEV, or AVH engine code. Fits AEG engine code from production date 11/01/2000 only

Brand:
Rein - Corporate Logo
ES#:
3469664
Mfg#:
1J0122157EM
In Stock at Vendor
$23.45

This product was last offered at the strikethrough price on
05-22-2026

$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch � 75-82�C

ES#1928244 - 1H0959481D - Auxiliary Fan Switch 75-82C - Square connector with rounded ends - Meyle - Audi Volkswagen

Square connector with rounded ends 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with square connector only

Brand:
Meyle - Corporate Logo
ES#:
1928244
Mfg#:
1H0959481D
Ships on Dec 10, 2026
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Plastic Water Pipe Kit - Stage 3

ES#257341 - VR624VTHKW1 - Plastic Water Pipe Kit - Stage 3 - An Upgrade Over Stage 2 That Includes Thermostat and Coolant. - Assembled By ECS - Volkswagen

An Upgrade Over Stage 2 That Includes Thermostat and Coolant. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
257341
Mfg#:
VR624VTHKW1
Ships in 1-2 days
ON SALE!
$191.99

This product was last offered at the strikethrough price on
04-13-2026

$175.04 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat - 87�C

ES#261793 - 044121113 - Thermostat - 87C - Keep your car running at the proper temperature. - Wahler - Volkswagen

Keep your car running at the proper temperature. Not compatible with the iABED aluminum thermostat housing (ES3553337).

Brand:
Wahler - Corporate Logo
ES#:
261793
Mfg#:
044121113
Ships on Oct 27, 2026
$29.27

This product was last offered at the strikethrough price on
09-22-2026

$19.35 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 Volkswagen

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