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

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
affirm financing terms & conditions
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

Volkswagen MK5 Engine Thermostat Parts

Sort By
Filter By
Return to Top

Thermostat Housing O-Ring

ES#2801137 - 021121119A - Thermostat Housing O-Ring - O-Ring between thermostat housing and cylinder head - Meistersatz - Audi Volkswagen

O-Ring between thermostat housing and cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Meistersatz - Corporate Logo
ES#:
2801137
Mfg#:
021121119A
Ships in 3 Business Days
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#471623 - N91025201 - Hex Bolt - Priced Each - Install new hardware with your new parts. 6x30 - Genuine Volkswagen Audi - Volkswagen

Install new hardware with your new parts. 6x30 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471623
Mfg#:
N91025201
Ships in 2 Business Days
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Scratch and Dent Item

Aluminum Water Pump Module (06H121026DD) *Scratch And Dent*

ES#4877348 - 06H121026DD - Aluminum Water Pump Module (06H121026DD) *Scratch And Dent* - Complete water pump housing module, includes thermostat, temp sensor, and gasket - Featuring a full aluminum housing with metal impeller! - Scratch & Dent - Audi Volkswagen

Complete water pump housing module, includes thermostat, temp sensor, and gasket - Featuring a full aluminum housing with metal impeller! ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with TSI engines only

Brand:
Scratch & Dent - Corporate Logo
ES#:
4877348
Mfg#:
06H121026DD
In Stock
ON SALE! SAVE 50%
$485.99

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

$243.00 USD
Free Shipping
on orders $49 and up

Thermostat Housing O-Ring

ES#5373591 - 021121119A - Thermostat Housing O-Ring - O-Ring between thermostat housing and cylinder head - Ajusa - Audi Volkswagen

O-Ring between thermostat housing and cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Ajusa - Corporate Logo
ES#:
5373591
Mfg#:
021121119A
Ships in 3 Business Days
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2763627 - 07K121113BKT3 - Thermostat Replacement Kit - Everything you need to service a faulty thermostat - Assembled By ECS - 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#:
2763627
Mfg#:
07K121113BKT3
Ships in 2 Business Days
ON SALE!
$138.37

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

$134.22 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Module - Plastic

ES#5341456 - 06H121026DDP - Water Pump Module - Plastic - Includes the thermostat, temp sensor, and gasket - Rein - Audi Volkswagen

Includes the thermostat, temp sensor, and gasket affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5341456
Mfg#:
06H121026DDP
Ships in 3 Business Days
ON SALE!
$415.99

This product was last offered at the strikethrough price on
06-29-2026

$394.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#2710667 - 06F121111F - Thermostat - Complete assembly including housing - Vemo - Audi Volkswagen

Complete assembly including housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with FSI engines only

Brand:
Vemo - Corporate Logo
ES#:
2710667
Mfg#:
06F121111F
In Stock at Vendor
$92.99

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

$90.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

Ensure a proper seal when installing your new thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with TSI engines only

Brand:
Meistersatz - Corporate Logo
ES#:
5374203
Mfg#:
06H121119E
Ships in 3 Business Days
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lower Coolant Reservoir Hose

Connects to lower thermostat hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5470760
Mfg#:
1KM122109C
Ships in 3 Business Days
ON SALE!
$30.99

This product was last offered at the strikethrough price on
06-29-2026

$28.83 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core Supply And Return Hose set

Replacement heater core supply hose assembly - Connects rear thermostat housing to heater core hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
5481516
Mfg#:
1K0122157KT
Ships in 2 Business Days
$513.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostats

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Gates - Corporate Logo
ES#:
3235618
Mfg#:
22121113
Ships on Jul 23, 2026
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

Keep your cooling system efficient affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with CCTA engine code only

Brand:
Gates - Corporate Logo
ES#:
3234830
Mfg#:
06H121113B
Ships on Jul 23, 2026
$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

Ensure a proper seal when installing your new thermostat. 50x3.5mm affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with FSI engines only

Brand:
Elring - Corporate Logo
ES#:
5340952
Mfg#:
06B121119B
Special Order: No Guaranteed ETA
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

Ensure a proper seal when installing your new thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Elring - Corporate Logo
ES#:
5340689
Mfg#:
N90136802
Special Order: No Guaranteed ETA
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

Common point of failure or leaking for the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5456694
Mfg#:
022121117C
Ships on Aug 20, 2026
Auto Notify
ON SALE! SAVE 20%
$34.99

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

$27.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Audi - Engine/Cooling

ES#4900590 - 06F121111F - Audi - Engine/Cooling - Meyle - Audi Volkswagen

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4900590
Mfg#:
06F121111F
Special Order: No Guaranteed ETA
$38.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Thermostat Parts

Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.

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