Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

Volkswagen Jetta Cooling System Service & Maintenance Parts

Sort By
Filter By
Return to Top

ECS Cooling System Refresh Kit - Performance

ES#2586603 - MKIVGLICOOLKT2 - ECS Cooling System Refresh Kit - Performance - This comprehensive kit eliminates weak spots in your cooling system and replaces them with performance options. Black hoses - Assembled By ECS - Volkswagen

This comprehensive kit eliminates weak spots in your cooling system and replaces them with performance options. Black hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AWW or AWD engine code with production date from 09/01/2000 only. Also fits vehicles with AWP engine code with manual transmission.

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586603
Mfg#:
MKIVGLICOOLKT2
Back Ordered
$1000.05 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2586887 - 06H121113BKT1 - Thermostat Replacement Kit - Includes a thermostat, housing, O-ring and bolts - Assembled By ECS - Audi Volkswagen

Includes a thermostat, housing, O-ring and bolts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with CCTA engine code only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586887
Mfg#:
06H121113BKT1
In Stock
ON SALE! SAVE 54%
$54.99

This product was last offered at the strikethrough price on
12-16-2025

$25.28 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Relief Flush

ES#2608077 - 040202 - Radiator Relief Flush - Concentrated cleansing agent that effectively cleans your cooling system! - DEI - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Concentrated cleansing agent that effectively cleans your cooling system! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
DEI - Corporate Logo
ES#:
2608077
Mfg#:
040202
In Stock
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

ES#4005786 - 018163ECS05 - Build-Your-Own MK4 24v VR6 Performance Cooling System Refresh Kit - Upgrade your VR6's cooling system with select performance upgrades from ECS Tuning! - Assembled By ECS - Volkswagen

Upgrade your VR6's cooling system with select performance upgrades from ECS Tuning! 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#:
4005786
Mfg#:
018163ECS05
Back Ordered
ON SALE!
Starting at $279.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#2598216 - 06H121113KT3 - Cooling System Refresh Kit - Level 1 - This entry level kit covers the most common failures in the cooling system - Genuine Volkswagen Audi - Volkswagen

This entry level kit covers the most common failures in the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with CBFA engine code and DSG transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2598216
Mfg#:
06H121113KT3
Ships in 4 Business Days
$911.99

This product was last offered at the strikethrough price on
02-26-2026

$896.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Build-Your-Own MK4 1.8T Performance Cooling System Refresh Kit

ES#4005762 - 018163ECS03 - Build-Your-Own MK4 1.8T Performance Cooling System Refresh Kit - Upgrade your 1.8T's cooling system with select performance upgrades from ECS Tuning! - Assembled By ECS - Volkswagen

Upgrade your 1.8T's cooling system with select performance upgrades from ECS Tuning! 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#:
4005762
Mfg#:
018163ECS03
Back Ordered
ON SALE!
Starting at $279.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Radiator Stop-Leak - 250mL

ES#3514566 - 20132 - Radiator Stop-Leak - 250mL - Put a stop to that coolant leak! - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Put a stop to that coolant leak! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3514566
Mfg#:
20132
In Stock
28% off MSRP

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

$15.95

This product was last offered at the strikethrough price on
06-03-2026

$11.49 USD
Free Shipping
on orders $49 and up

Cooling System Refresh Kit - Level 1

ES#2598212 - 06H121113KT5 - Cooling System Refresh Kit - Level 1 - This entry level kit covers the most common failures in the cooling system - Genuine Volkswagen Audi - Volkswagen

This entry level kit covers the most common failures in the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with CCTA or CBFA engine codes and manual transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2598212
Mfg#:
06H121113KT5
Ships in 1 day
$793.99

This product was last offered at the strikethrough price on
02-26-2026

$785.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2954030 - 038121121KT - 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 ALH engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2954030
Mfg#:
038121121KT
In Stock
$109.99

This product was last offered at the strikethrough price on
02-24-2026

$103.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 1

ES#2598213 - 06H121113KT6 - Cooling System Refresh Kit - Level 1 - This entry level kit covers the most common failures in the cooling system - Assembled By ECS - Volkswagen

This entry level kit covers the most common failures in the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with CCTA or CBFA engine codes and manual transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2598213
Mfg#:
06H121113KT6
In Stock
ON SALE!
$360.75 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Lock Carrier Tool - M10

ES#4492729 - 01598SCH01 - Lock Carrier Tool - M10 - Extended lock carrier bolt to make extra room without removing the entire front end. - Schwaben - Audi Volkswagen

Extended lock carrier bolt to make extra room without removing the entire front end. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
4492729
Mfg#:
01598SCH01
Ships on Jun 23, 2026
Auto Notify
ON SALE! SAVE 25%
$10.99

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

$8.21 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 1

ES#2598210 - 1K0122101DKT1 - Cooling System Refresh Kit - Level 1 - This entry level kit covers the most common failures in the cooling system - Genuine Volkswagen Audi - Volkswagen

This entry level kit covers the most common failures in the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with BPY engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2598210
Mfg#:
1K0122101DKT1
Ships in 2 Business Days
$676.99

This product was last offered at the strikethrough price on
02-26-2026

$624.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit

ES#2763410 - 1J0121253ADKT4 - 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 AWW or AWD engine code with production date from 09/01/2000 only. Also fits vehicles with AWP engine code with manual transmission.

Brand:
Assembled By ECS - Corporate Logo
ES#:
2763410
Mfg#:
1J0121253ADKT4
Ships on Jun 19, 2026
ON SALE!
$618.23

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

$601.40 USD
This product is lifetime replacement eligible Partial Replacement

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 - Level 2

ES#2586421 - 1K0121251AB1KT - Cooling System Refresh Kit - Level 2 - This comprehensive kit eliminates weak spots in your cooling system - Assembled By ECS - Volkswagen

This comprehensive kit eliminates weak spots in your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with CCTA engine code and manual transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586421
Mfg#:
1K0121251AB1KT
Ships in 1-2 days
ON SALE!
$559.07 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

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.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings