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

Audi A4 Engine Thermostat Parts

Sort By
Filter By
Return to Top

Thermostat Assembly

ES#5492522 - 06B121111K - Thermostat Assembly - Direct OE-quality replacement electronically mapped thermostat assembly to cure overheating, resolve P2181 or P3081 codes, and restore proper engine operating temperature on your longitudinal 1.8T. - Febi - Audi

Direct OE-quality replacement electronically mapped thermostat assembly to cure overheating, resolve P2181 or P3081 codes, and restore proper engine operating temperature on your longitudinal 1.8T. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Febi - Corporate Logo
ES#:
5492522
Mfg#:
06B121111K
Special Order: No Guaranteed ETA
$108.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Assembly

ES#2582081 - 06B121111K - Thermostat Assembly - Includes housing, gasket & sensor - Vemo Q+ - Audi

Includes housing, gasket & sensor Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Vemo Q+ - Corporate Logo
ES#:
2582081
Mfg#:
06B121111K
Special Order: No Guaranteed ETA
$89.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat (87°C)

ES#5492507 - 050121113C4 - Thermostat (87C) - Direct OE-quality replacement thermostat to cure overheating issues, resolve poor cabin heater performance, and ensure your engine reaches and maintains its ideal operating temperature. - Febi - Audi Volkswagen

Direct OE-quality replacement thermostat to cure overheating issues, resolve poor cabin heater performance, and ensure your engine reaches and maintains its ideal operating temperature. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Febi - Corporate Logo
ES#:
5492507
Mfg#:
050121113C4
Special Order: No Guaranteed ETA
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

THERMOSTAT ASSEMBLY 100C

ES#4151133 - 06B121111K - THERMOSTAT ASSEMBLY 100C - Rein - Audi

2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4151133
Mfg#:
06B121111K
Back Ordered
$111.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VW | Thermostat, coolant

ES#4853547 - 050121113B - VW | Thermostat, coolant - Vemo - Audi

Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Vemo - Corporate Logo
ES#:
4853547
Mfg#:
050121113B
Special Order: No Guaranteed ETA
$15.99 USD
Free Shipping
on orders $49 and up

Thermostat - 87C

Prevent overheating and premature engine wear 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940301
Mfg#:
078121113F
Special Order: No Guaranteed ETA
ON SALE! SAVE 29%
$16.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Assembly

Includes housing, gasket & sensor Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
SMP - Corporate Logo
ES#:
4070681
Mfg#:
06B121111K
Back Ordered
$135.99

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

$132.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat (87°C)

Prevent overheating and premature engine wear. Includes O-ring Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Vernet - Corporate Logo
ES#:
4674381
Mfg#:
050121113C
Back Ordered
$12.99 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 Audi

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 Your Privacy Choices Cookie Policy ECS Tuning is part of Enthusiast Auto Holdings