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Volkswagen MK4 Cooling System Service & Maintenance Parts

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Mishimoto Liquid Chill Radiator Coolant Additive - 4oz

ES#2764643 - MMRALC - Mishimoto Liquid Chill Radiator Coolant Additive - 4oz - Pairs with all types of coolant to increase heat transfer and decrease engine temps. - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Pairs with all types of coolant to increase heat transfer and decrease engine temps. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764643
Mfg#:
MMRALC
Ships in 3 Business Days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2581582 - 050121113CKT2 - Thermostat Replacement Kit - Everything you need to service a faulty thermostat - Assembled By ECS - Audi Volkswagen

Everything you need to service a faulty thermostat 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#:
2581582
Mfg#:
050121113CKT2
In Stock
ON SALE! SAVE 24%
$33.99

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

$25.93 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit

ES#2765677 - 1J0121253ADKT7 - Cooling System Refresh Kit - The most common failure points in your cars cooling system - Assembled By ECS - Volkswagen

The most common failure points in your cars cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with manual transmission from the 2002 model year and ALH engine code

Brand:
Assembled By ECS - Corporate Logo
ES#:
2765677
Mfg#:
1J0121253ADKT7
Back Ordered
Auto Notify
ON SALE!
$541.99

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

$530.20 USD
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2954031 - 038121121dkKT - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housing and hardware - Genuine Volkswagen Audi - Volkswagen

Maintain proper operating temperature with a new thermostat, housing and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with BEW engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2954031
Mfg#:
038121121DKKT
Ships in 1 day
$128.99

This product was last offered at the strikethrough price on
03-18-2026

$124.99 USD
Free Shipping
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2696212
Mfg#:
V99-1005
In Stock at Vendor
$51.99

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

$50.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Volkswagen Audi G12Evo Coolant / Antifreeze - 1.5 Liter

ES#4464979 - G12E100M2 - Volkswagen Audi G12Evo Coolant / Antifreeze - 1.5 Liter - Extended Life Coolant Concentrate - Vaico - Audi Volkswagen

Extended Life Coolant Concentrate affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4464979
Mfg#:
G12E100M2
Ships in 5 Business Days
$20.99 USD
Free Shipping
on orders $49 and up

Thermostat Replacement Kit

ES#2680972 - G013A8J1GKT - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housings and hardware - Genuine Volkswagen Audi - Volkswagen

Maintain proper operating temperature with a new thermostat, housings and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2680972
Mfg#:
G013A8J1GKT
Ships in 1-3 days
$448.18

This product was last offered at the strikethrough price on
02-03-2026

$431.19 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Liquid Chill Premixed Synthetic Engine Coolant - 64oz

ES#3676995 - MMRALC505064F - Liquid Chill Premixed Synthetic Engine Coolant - 64oz - Perfect for a top off any time you need it! - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Perfect for a top off any time you need it! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
3676995
Mfg#:
MMRALC505064F
In Stock
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - oE

ES#2763716 - MKIVJTCRK20KTKT - Cooling System Refresh Kit - oE - Everything needed for a full cooling system overhaul - Assembled By ECS - Volkswagen

Everything needed for a full cooling system overhaul affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AEG engine code only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2763716
Mfg#:
MKIVJTCRK20KTKT
Ships in 1 Business Day
ON SALE!
$335.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

ECS Cooling System Refresh Kit

ES#2581295 - MKIVGLICOOLKT - ECS Cooling System Refresh Kit - The most common failure points in your cars cooling system - Assembled By ECS - Volkswagen

The most common failure points in your cars cooling system 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#:
2581295
Mfg#:
MKIVGLICOOLKT
Ships in 1-3 days
ON SALE!
$289.65 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Purple Ice - 12oz

ES#2793046 - 01600 - Purple Ice - 12oz - High performance coolant conditioner - Royal Purple - Audi BMW Volkswagen Mercedes Benz MINI Porsche

High performance coolant conditioner affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Royal Purple - Corporate Logo
ES#:
2793046
Mfg#:
01600
In Stock
$12.99 USD
Free Shipping
on orders $49 and up

Thermostat Replacement Kit

ES#2765882 - G013A8J1GKT2 - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housings and hardware - Assembled By ECS - Volkswagen

Maintain proper operating temperature with a new thermostat, housings and hardware 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#:
2765882
Mfg#:
G013A8J1GKT2
Back Ordered
ON SALE!
$255.99

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

$240.16 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Flush Kit

ES#2784778 - CO0LANTFLUSHKT1 - Cooling System Flush Kit - Keep your cooling system working at its best by keeping it clean and free of rust and scale deposits. Includes new expansion tank cap, flush treatment & G13 coolant. - Assembled By ECS - Audi Volkswagen

Keep your cooling system working at its best by keeping it clean and free of rust and scale deposits. Includes new expansion tank cap, flush treatment & G13 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#:
2784778
Mfg#:
CO0LANTFLUSHKT1
In Stock
ON SALE! SAVE 10%
$65.99

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

$59.16 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2581583 - 050121113CKT1 - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housing and hardware - Genuine Volkswagen Audi - Audi Volkswagen

Maintain proper operating temperature with a new thermostat, housing and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2581583
Mfg#:
050121113CKT1
In Stock at Vendor
$119.99

This product was last offered at the strikethrough price on
03-18-2026

$114.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2785049 - 075121113DKT4 - Thermostat Replacement Kit - Featuring a low-temperature thermostat - Assembled By ECS - Volkswagen

Featuring a low-temperature thermostat 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#:
2785049
Mfg#:
075121113DKT4
In Stock
ON SALE! SAVE 16%
$135.99

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

$114.44 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

G13 Coolant / Antifreeze - 5 Liter

ES#2872898 - G013A8JM1S1 - G13 Coolant / Antifreeze - 5 Liter - Lilac OE VW/Audi specification concentrate lifetime coolant - Febi - Audi Volkswagen

Lilac OE VW/Audi specification concentrate lifetime coolant affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2872898
Mfg#:
G013A8JM1S1
In Stock at Vendor
Auto Notify
$76.99

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

$74.99 USD
Free Shipping
on orders $49 and up

More About Cooling System Service & Maintenance Parts

From individual cooling system parts to full cooling system refresh kits and cooling system upgrades, we have it all right here so you can keep your engine temperature in check or improve cooling system performance to meet the demands you place on your car.

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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