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 A3 Thermostat Housings

Sort By
Filter By
Return to Top

O-Ring - Priced Each

ES#4197 - N10139201 - O-Ring - Priced Each - O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55 - Rein - Audi Volkswagen

O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4197
Mfg#:
N10139201
In Stock
$4.28 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing O-Ring

ES#2394 - 021121119A - Thermostat Housing O-Ring - O-Ring between thermostat housing and cylinder head - Victor Reinz - Audi Volkswagen

O-Ring between thermostat housing and cylinder head

Brand:
Victor Reinz - Corporate Logo
ES#:
2394
Mfg#:
021121119A
In Stock at Vendor
$10.99

This product was last offered at the strikethrough price on
04-28-2026

$4.07 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#2762958 - 03L121111AC1 - Thermostat - Includes housing and seal ring - Behr - Audi Volkswagen

Includes housing and seal ring

Brand:
Behr - Corporate Logo
ES#:
2762958
Mfg#:
03L121111AC1
Ships in 7 Business Days
$73.84

This product was last offered at the strikethrough price on
05-09-2026

$70.65 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#3149394 - 06F121111F - Thermostat - Complete assembly including housing - Rein - Audi Volkswagen

Complete assembly including housing 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with FSI engines only

Brand:
Rein - Corporate Logo
ES#:
3149394
Mfg#:
06F121111F
In Stock at Vendor
$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#11800 - N90136802 - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Febi - Audi BMW Volkswagen

Ensure a proper seal when installing your new thermostat We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
11800
Mfg#:
N90136802
Ships on Nov 19, 2026
$1.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#252671 - 06F121111F - Thermostat - Complete assembly including housing - Genuine Volkswagen Audi - Audi Volkswagen

Complete assembly including housing For vehicles with FSI engines only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
252671
Mfg#:
06F121111F
Ships in 4 Business Days
7% off MSRP

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

$138.99

This product was last offered at the strikethrough price on
10-23-2026

$129.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Cover

ES#4376409 - 022121121E - Thermostat Housing Cover - Common source of coolant leaks around your thermostat - URO - Audi Volkswagen

Common source of coolant leaks around your thermostat 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4376409
Mfg#:
022121121E
Ships in 1 Business Day
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Assembly - OE# 06F121111F

ES#2813080 - 06F121111F - Thermostat Assembly - OE# 06F121111F - Complete assembly including housing - Hamburg Tech - Audi Volkswagen

Complete assembly including housing We Price Match - Give Us A Call or Chat!
For vehicles with FSI engines only

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813080
Mfg#:
06F121111F
Ships in 1 Business Day
$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#281548 - 06J121121 - Thermostat Housing - Plastic flange for the thermostat that connects to the water pump housing - Genuine Volkswagen Audi - Audi

Plastic flange for the thermostat that connects to the water pump housing For vehicles with TSI engines with Behr water pumps

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281548
Mfg#:
06J121121
Ships in 1-2 days
13% off MSRP

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

$47.99

This product was last offered at the strikethrough price on
08-31-2026

$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#3234823 - 06F121111F - Thermostat - Complete assembly including housing - Gates - Audi Volkswagen

Complete assembly including housing For vehicles with FSI engines only

Brand:
Gates - Corporate Logo
ES#:
3234823
Mfg#:
06F121111F
Ships on Nov 12, 2026
$69.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#281432 - 06H121119E - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal when installing your new thermostat

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281432
Mfg#:
06H121119E
Ships in 1-2 days
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#2800267 - 06H121119E - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Ajusa - Audi Volkswagen

Ensure a proper seal when installing your new thermostat

Brand:
Ajusa - Corporate Logo
ES#:
2800267
Mfg#:
06H121119E
In Stock
$8.99

This product was last offered at the strikethrough price on
10-07-2026

$3.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#4900543 - 03L121111AC - Thermostat - This also includes the thermostat housing - Meyle - Audi Volkswagen

This also includes the thermostat housing 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4900543
Mfg#:
03L121111AC
Ships on Nov 16, 2026
$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#3449329 - N90136802 - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Victor Reinz - Audi BMW Volkswagen

Ensure a proper seal when installing your new thermostat

Brand:
Victor Reinz - Corporate Logo
ES#:
3449329
Mfg#:
N90136802
Ships in 1 Business Day
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#2801100 - 06F121111F - Thermostat - Complete assembly including housing - Meistersatz - Audi Volkswagen

Complete assembly including housing For vehicles with FSI engines only

Brand:
Meistersatz - Corporate Logo
ES#:
2801100
Mfg#:
06F121111F
Ships in 3 Business Days
$29.23

This product was last offered at the strikethrough price on
06-11-2026

$24.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#4352634 - 03L121111AC - Thermostat - This also includes the thermostat housing - Rein - Audi Volkswagen

This also includes the thermostat housing 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4352634
Mfg#:
03L121111AC
Ships in 3 Business Days
$49.99

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

$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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