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Build-Your-Own MK4 24v VR6 Performance Cooling System Refresh Kit

Upgrade your VR6's cooling system with select performance upgrades from ECS Tuning!

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ES#:: 4005786
Mfg#:: 018163ECS05

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Build-Your-Own MK4 24v VR6 Performance Cooling System Refresh Kit

Starting at: $267.74

SALE: 921.36

Starting at: $267.74

WAS: $1024.99 on 06-13-2026

This product was last offered at the strikethrough price on
06-13-2026

Sale Save 10%

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Availability:

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MK4 Performance Aluminum Radiator

Direct-fit upgrade! Featuring a 26% increase in cooling system capacity along with a durable, all aluminum construction

10X Entries For Our 25th Anniversary Sweepstakes!

4001222 018163ECS01KT

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Partial Replacement

Sale

SAVE 25% $356.99

This product was last offered at the strikethrough price on
06-13-2026

267.74

Included With Purchase

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Cast Aluminum Thermostat Housing Kit

Replace your inferior plastic housings

Modification to water pipe may be required. Please see description for details.

3553466 462-121-VR-24VKT

Availability:

Back Ordered

Est. Ship Date:

No ETA

Lifetime Replacement

250.99

Cast Aluminum Thermostat Housing

Replace your inferior plastic housing

Modification to water pipe may be required. Please see description for details.

3553457 462-121-VR47C

Availability:

Back Ordered

Est. Ship Date:

No ETA

Lifetime Replacement

169.99

Cast Aluminum Thermostat Housing Cover

Replace your inferior plastic housing cover

3553459 462-121-VR41E

Availability:

Back Ordered

Est. Ship Date:

No ETA

Lifetime Replacement

39.99

No, thank you.

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VR6 Racing Thermostat - 71°C

Keep your engine running cooler for more power

2764806 MMTSVR693L

Availability:

Available from Supplier

Est. Ship Date:

Ships Aug 11, 2026

Lifetime Replacement

68.99

Thermostat - 71°C

Keep your engine running cooler for more power

6957 075121113D 71D

Availability:

Available from Supplier

Est. Ship Date:

Ships in 7 Business Days

Lifetime Replacement

30.99

Thermostat - 80°C

Does not include sealing O-Ring

282068 075121113D

Availability:

Available from Supplier

Est. Ship Date:

Ships in 3 Business Days

Lifetime Replacement

Sale SAVE 7% $59.99

55.99

Thermostat - 80°C

Includes sealing O-Ring

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2771162 075121113D

Availability:

Available from Supplier

Est. Ship Date:

Ships on Dec 18, 2026

Lifetime Replacement

13.99

No, thank you.

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ECS Billet 24v Aluminum Water Pipe - Black

Designed to be the last water pipe you'll need to replace

10X Entries For Our 25th Anniversary Sweepstakes!

2848080 003285ECS0101

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 10% $135.99

This product was last offered at the strikethrough price on
07-14-2026

123.00

ECS Billet 24v Aluminum Water Pipe - Silver

Pipe from back of water pump to thermostat housing, located under intake manifold. Engineered to be the last water pipe you'll need to replace

10X Entries For Our 25th Anniversary Sweepstakes!

2848081 003285ECS0102

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

135.99

BFI Billet Water Pipe

Bypass pipe located underneath intake manifold. Designed to be the last water pipe you'll need to replace.

3021908 EBFI24VCP

Availability:

Ships Directly From Supplier

Est. Ship Date:

on Sep 1, 2026

Lifetime Replacement

99.99

Stainless Steel 24v Water Pipe - Satin Black

Bypass pipe located underneath intake manifold. Designed to be the last water pipe you'll need to replace.

3080866 8078525

Availability:

Special Order

Est. Ship Date:

No Guaranteed ETA

Lifetime Replacement

85.00

Stainless Steel 24v Water Pipe - Silver

Bypass pipe located underneath intake manifold. Designed to be the last water pipe you'll need to replace.

3076698 1864350

Availability:

Special Order

Est. Ship Date:

No Guaranteed ETA

Lifetime Replacement

85.00

No, thank you.

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Coolant Temperature Sensor With O-Ring & Clip - 4 Pin - *ECS Recommends*

Updated Green sensor with square/round connector. Please check existing sensor color

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2535452 059919501AKTU

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

20.66

Coolant Temperature Sensor With O-Ring & Clip - 4 Pin

Updated Green sensor with square/round connector. Please check existing sensor color

264174 059919501AKT2

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

47.91

No, thank you.

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Auxiliary Fan Switch � 95-102�C

Square connector with rounded ends, includes O-Ring

2146770 1H0698481B

Availability:

Back Ordered

Est. Ship Date:

No ETA

Lifetime Replacement

9.99

Radiator Fan Switch 95-102°C

Triangular Connector

310850 1J0959481A

Availability:

Available from Supplier

Est. Ship Date:

Ships in 3 Business Days

Lifetime Replacement

Sale SAVE 7% $133.99

124.99

Radiator Fan Switch 95-102C

Triangular Connector

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2537915 1J0959481A

Availability:

Available from Supplier

Est. Ship Date:

Ships on Dec 18, 2026

Lifetime Replacement

19.99

Auxiliary Fan Switch � 87-93�C

Square connector with rounded ends

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251122 701959481

Availability:

Available from Supplier

Est. Ship Date:

Ships on Dec 18, 2026

Lifetime Replacement

16.99

Auxiliary Fan Switch � 75-82�C

Square connector with rounded ends

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1928244 1H0959481D

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

15.99

No, thank you.

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Expansion Tank Replacement Kit - Complete Assembly With Porsche Cap

Add some style with this reservoir kit which includes an aluminum Porsche coolant cap!

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2597343 42012132118T

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 4% $82.99

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

80.01

Expansion Tank Replacement Kit - Complete Assembly

Clean up your engine bay or replace your cracked unit with a new coolant expansion tank replacement kit.

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2575924 1J01000-1

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Partial Replacement

Sale

SAVE 18% $29.99

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

24.70

Coolant Expansion Tank

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

1905029 1J0121407F

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale SAVE 22% $77.15

59.99

Coolant Expansion Tank

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

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2709358 1J0121407F

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

15.99

No, thank you.

Select 1 of the options below

Water Pump

Does not come with o-ring

2588211 022121011

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

67.99

Water Pump

New pump unit with o-ring seal

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4713 022121011

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

72.99

No, thank you.

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G13 Coolant - 1.5 Liter

Lilac OE VW/Audi specification concentrate lifetime coolant

We Price Match - Give Us A Call or Chat!

2603076 G013A8JM1

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

No Lifetime Replacement

21.99

Liquid Chill Premixed Synthetic Engine Coolant - 64oz

Perfect for a top off any time you need it!

3676995 MMRALC505064F

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

28.99

Genuine Volkswagen Audi G12evo Coolant / Antifreeze - 1 Gallon (3.78 Liters)

Extended Life Coolant Pre-mixed 50/50

4672297 G12E0501GRTU

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

No Lifetime Replacement

30.95

No, thank you.

Product Details

10X Entries For Our 25th Anniversary Sweepstakes!

This comprehensive kit was designed to address the major issues with the cooling system while giving you some added performance benefits. The ECS Tuning in-house engineered Performance Aluminum Radiator utilizes a larger volume, dual row, dual-pass aluminum heat exchanger, hand TIG-welded to 5052 aluminum end tanks and polished to perfection. Featuring a 26% increase in overall volume compared to stock, this is a direct replacement radiator that will outperform and outlast the OE unit!

Instead of chasing one issue at a time, ECS designed this kit to make it simple. Replace all your potentially faulty components in one afternoon for peace of mind.

WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California.
Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

This Part Fits the Following Vehicles

Make	Model	Submodel	Engine	Special Fitment Notes
Volkswagen	Golf IV	All	VR6 24v	Use vehicle selector to confirm fitment
Volkswagen	Jetta IV	All	VR6 24v	Use vehicle selector to confirm fitment

*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.