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Volkswagen MK4 Engine Cooling Parts

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Heater Hose

ES#3235504 - 1J0121156AT - Heater Hose - 4-way heater hose with quick coupling piece & attachment for bracket, connects to heater core - Gates - Audi Volkswagen

4-way heater hose with quick coupling piece & attachment for bracket, connects to heater core affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Gates - Corporate Logo
ES#:
3235504
Mfg#:
1J0121156AT
Ships on Jun 25, 2026
$198.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Radiator

ES#3476110 - 1J0121253AD - Radiator - Factory OE replacement 2-row radiator - Modine - Audi Volkswagen

Factory OE replacement 2-row radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Modine - Corporate Logo
ES#:
3476110
Mfg#:
1J0121253AD
Back Ordered
$204.99

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

$198.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe

ES#275115 - 038121065BF - Coolant Pipe - Large water pipe that connects to various hoses - Genuine Volkswagen Audi - Volkswagen

Large water pipe that connects to various hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with BEW engine code and automatic transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275115
Mfg#:
038121065BF
Special Order: No Guaranteed ETA
7% off MSRP

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

$206.99

This product was last offered at the strikethrough price on
06-07-2026

$192.99 USD
Free Shipping
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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

Water Pipe

ES#279291 - 06A121065AR - Water Pipe - Main water pipe connected to your engine block. Provides passage of coolant to oil cooler, expansion tank, heater core and more - Genuine Volkswagen Audi - Volkswagen

Main water pipe connected to your engine block. Provides passage of coolant to oil cooler, expansion tank, heater core and more affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with a build date up to 07/14/2003

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279291
Mfg#:
06A121065AR
Ships in 3 Business Days
6% off MSRP

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

$204.99

This product was last offered at the strikethrough price on
06-07-2026

$191.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose

ES#307204 - 1J0121109C - Coolant Hose - Connects water pipe to lower port of expansion tank - Genuine Volkswagen Audi - Volkswagen

Connects water pipe to lower port of expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with ALH engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307204
Mfg#:
1J0121109C
Back Ordered
Auto Notify
6% off MSRP

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

$204.99

This product was last offered at the strikethrough price on
06-07-2026

$191.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Banjo Bolt - Priced Each

ES#3549989 - N0210719 - Banjo Bolt - Priced Each - Hollow bolt that allows fluid to pass through. M12 - Genuine Volkswagen Audi - Audi Volkswagen

Hollow bolt that allows fluid to pass through. M12 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the turbo oil supply line

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3549989
Mfg#:
N0210719
Ships in 3 Business Days
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Radiator Installation Kit

ES#2581548 - 1J0806157FKT - ECS Radiator Installation Kit - Includes radiator mounts and hoses for a simple installation - Assembled By ECS - Volkswagen

Includes radiator mounts and hoses for a simple installation affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with manual transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2581548
Mfg#:
1J0806157FKT
In Stock at Vendor
ON SALE!
$193.99

This product was last offered at the strikethrough price on
01-03-2026

$191.18 USD
Free Shipping
This product is lifetime replacement eligible Partial 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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
06-07-2026

$189.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug Kit - Priced Each

ES#2588261 - 357121140KT - Coolant Flange Plug Kit - Priced Each - Includes all needed to plug a sensor hole - Genuine Volkswagen Audi - Volkswagen

Includes all needed to plug a sensor hole affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2588261
Mfg#:
357121140KT
In Stock
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Primary Fan Assembly - 345MM

ES#3492477 - 6E0959455A - Primary Fan Assembly - 345MM - Main fan responsible for pulling air through your radiator. - Nissens - Volkswagen

Main fan responsible for pulling air through your radiator. We Price Match - Give Us A Call or Chat! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles without air conditioning

Brand:
Nissens - Corporate Logo
ES#:
3492477
Mfg#:
6E0959455A
Ships in 6 Business Days
$216.99

This product was last offered at the strikethrough price on
12-15-2025

$188.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Plastic Water Distribution Pipe

ES#4219 - 022121050 - Plastic Water Distribution Pipe - Pipe from back of water pump to thermostat housing, located under intake manifold. Commonly referred to as the crack pipe. - Genuine Volkswagen Audi - Audi Volkswagen

Pipe from back of water pump to thermostat housing, located under intake manifold. Commonly referred to as the crack pipe. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4219
Mfg#:
022121050
Ships in 3 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.

$67.99

This product was last offered at the strikethrough price on
06-07-2026

$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Coupler

ES#307293 - 1J0122291D - Cooling System Coupler - Keep your cooling system leak free - Genuine Volkswagen Audi - Audi Volkswagen

Keep your cooling system leak free affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307293
Mfg#:
1J0122291D
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.

$29.99

This product was last offered at the strikethrough price on
06-07-2026

$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Not compatible with the iABED aluminum thermostat housing (ES3553337).

Brand:
Wahler - Corporate Logo
ES#:
261793
Mfg#:
044121113
In Stock at Vendor
$18.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#3419389 - N90316802 - Sealing O-Ring - Priced Each - Seal for most clip-in cooling sensors/senders. M19.6x3.6mm - Rein - Audi Volkswagen

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3419389
Mfg#:
N90316802
In Stock
$2.12 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
257341
Mfg#:
VR624VTHKW1
Ships in 3 Business Days
ON SALE!
$194.99

This product was last offered at the strikethrough price on
01-24-2026

$186.41 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 Volkswagen

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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