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 Engine Coolant Flanges & Parts

Sort By
Filter By
Return to Top

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 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
11800
Mfg#:
N90136802
In Stock
$1.59 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

Bolt - Priced Each

ES#469946 - N90476201 - Bolt - Priced Each - Use new hardware with your new parts. M6x85 - Genuine Volkswagen Audi - Volkswagen

Use new hardware with your new parts. M6x85

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
469946
Mfg#:
N90476201
In Stock
Limited Qty Sale
$8.99

This product was last offered at the strikethrough price on
06-25-2026

$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose Flange

ES#275134 - 038121132D - Coolant Hose Flange - Common point of failure or leaking for the cooling system on your TDI. - Genuine Volkswagen Audi - Volkswagen

Common point of failure or leaking for the cooling system on your TDI.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275134
Mfg#:
038121132D
Ships in 1-2 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.

$153.99

This product was last offered at the strikethrough price on
08-19-2026

$142.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cast Aluminum Thermostat Housing

ES#3553455 - 462-121-VR37A - Cast Aluminum Thermostat Housing - Replace your inferior plastic housing - iABED Industries - Volkswagen

Replace your inferior plastic housing For AES engine codes

Brand:
iABED Industries - Corporate Logo
ES#:
3553455
Mfg#:
462-121-VR37A
Back Ordered
Auto Notify
$139.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Glow Plug - Priced Each

ES#467877 - N10302102 - Coolant Glow Plug - Priced Each - 3 required - Genuine Volkswagen Audi - Volkswagen

3 required

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467877
Mfg#:
N10302102
Ships in 1-2 days
6% off MSRP

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

$48.99

This product was last offered at the strikethrough price on
08-19-2026

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

Thermostat Housing

ES#4715255 - 06K121111P - Thermostat Housing - Includes thermostat and housing gasket - Hudson - Volkswagen

Includes thermostat and housing gasket

Brand:
Hudson - Corporate Logo
ES#:
4715255
Mfg#:
06K121111P
Ships in 1-2 days
$135.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring

ES#2663663 - WHT005190 - Sealing O-Ring - Found on the thermostat housing assembly. 37.5x4x6 - Genuine Volkswagen Audi - Audi Volkswagen

Found on the thermostat housing assembly. 37.5x4x6

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2663663
Mfg#:
WHT005190
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#275594 - 03G121132B - Coolant Flange - Located on the driver side of the cylinder head, this pipe contains the coolant temperature sensor - Genuine Volkswagen Audi - Volkswagen

Located on the driver side of the cylinder head, this pipe contains the coolant temperature sensor For vehicles with BRM engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275594
Mfg#:
03G121132B
Ships in 1-2 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.

$69.99

This product was last offered at the strikethrough price on
08-19-2026

$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2594504 - 021121117A - Thermostat Housing - Located on the drivers side of the engine, does not include required o-rings - URO - Volkswagen

Located on the drivers side of the engine, does not include required o-rings 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2594504
Mfg#:
021121117A
In Stock
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2865688 - 030121121B - Thermostat Housing - Located on the water pump assembly - Febi - Audi Volkswagen

Located on the water pump assembly 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with AEB or ATW engine codes only.

Brand:
Febi - Corporate Logo
ES#:
2865688
Mfg#:
030121121B
In Stock
$9.22 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Y Flange

ES#4348606 - Aut-mk4-cf2 - Billet Y Flange - Billet Y flange. Eliminate the fail prone plastic flange located by the coolant reservoir. - Autobahn Autoworx - Volkswagen

Billet Y flange. Eliminate the fail prone plastic flange located by the coolant reservoir.

Brand:
Autobahn Autoworx - Corporate Logo
ES#:
4348606
Mfg#:
AUT-MK4-CF2
Special Order: No Guaranteed ETA
$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Quick Disconnect Coolant Flange

ES#2719855 - 5Q0122291AC - Quick Disconnect Coolant Flange - Quick disconnect that attached directly to the water pump housing - Genuine Volkswagen Audi - Volkswagen

Quick disconnect that attached directly to the water pump housing For vehicles with manual transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2719855
Mfg#:
5Q0122291AC
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.

$23.99

This product was last offered at the strikethrough price on
08-19-2026

$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#2712774 - 06A121132AP - Coolant Flange - Located on the driver side of the cylinder head, this pipe contains the coolant temperature sensor - Vaico - Audi Volkswagen

Located on the driver side of the cylinder head, this pipe contains the coolant temperature sensor We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2712774
Mfg#:
06A121132AP
In Stock at Vendor
$11.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#315452 - 1K0122291J - Coolant Flange - 90 degree fitting with quick coupling - Genuine Volkswagen Audi - Volkswagen

90 degree fitting with quick coupling

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
315452
Mfg#:
1K0122291J
Ships in 1-2 days
11% off MSRP

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

$45.99

This product was last offered at the strikethrough price on
08-19-2026

$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-ring

ES#274530 - 037121688 - Sealing O-ring - For left cylinder head cooling flange (50x3.15) - Genuine Volkswagen Audi - Volkswagen

For left cylinder head cooling flange (50x3.15)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
274530
Mfg#:
037121688
In Stock
8% off MSRP

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

$12.99

This product was last offered at the strikethrough price on
08-19-2026

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

More About Engine Coolant Flanges & Parts

Replace a cracked or failed coolant flange with a brand new coolant flange to stop those leaks!

Other Volkswagen Engine Coolant Flanges & Parts

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