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 Passat Engine Coolant Flanges & Parts

Sort By
Filter By
Return to Top

Cylinder Head Cooling Flange

ES#4783242 - 06J121132E - Cylinder Head Cooling Flange - Common area for coolant leaks - Located on cylinder head - Rein - Audi Volkswagen

Common area for coolant leaks - Located on cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with CBFA engine code only

Brand:
Rein - Corporate Logo
ES#:
4783242
Mfg#:
06J121132E
Ships in 3 Business Days
$63.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bolt - Priced Each

ES#466546 - N0147821 - Bolt - Priced Each - Use new hardware with your new parts. M6x25 - Genuine Volkswagen Audi - Volkswagen

Use new hardware with your new parts. M6x25 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
466546
Mfg#:
N0147821
In Stock
46% 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
06-04-2026

$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2677915 - 021121117A - Thermostat Housing - Located on the drivers side of the engine. O-rings sold separately. - Vaico - Volkswagen

Located on the drivers side of the engine. O-rings sold separately. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2677915
Mfg#:
021121117A
In Stock
$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe Kit

ES#3546691 - 03h121091KT - Coolant Pipe Kit - Includes gasket and hardware - Genuine Volkswagen Audi - Volkswagen

Includes gasket and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3546691
Mfg#:
03H121091KT
Ships in 1 day
$61.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Cover

ES#4164934 - 03H121121D - Thermostat Cover - Outlet for coolant from the thermostat - Hamburg Tech - Volkswagen

Outlet for coolant from the thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4164934
Mfg#:
03H121121D
Ships in 1 Business Day
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#469440 - N90280904 - Hex Bolt - Priced Each - Install new hardware with your new parts. M6x22 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x22 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Engine codes AEB & ATW. Secures the coolant flange to the cylinder head.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
469440
Mfg#:
N90280904
In Stock
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling Pipe Adaptor

ES#268981 - 021121133D - Cooling Pipe Adaptor - Cooling pipe adaptor from crack pipe to thermostat housing - Genuine Volkswagen Audi - Volkswagen

Cooling pipe adaptor from crack pipe to thermostat housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
268981
Mfg#:
021121133D
Back Ordered
Auto Notify
6% off MSRP

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

$63.99

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

$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#514001 - 038121119B - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat. 50x4 - Victor Reinz - Audi Volkswagen

Ensure a proper seal when installing your new thermostat. 50x4 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
514001
Mfg#:
038121119B
In Stock at Vendor
$2.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#4057465 - N90316802 - Sealing O-Ring - Priced Each - Seal for most clip-in cooling sensors/senders. M19.6x3.6mm - Victor Reinz - Audi Volkswagen

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
4057465
Mfg#:
N90316802
Ships in 2 Business Days
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe

ES#2738867 - 021121050C - Coolant Pipe - Bypass pipe located underneath intake manifold. Also known as the crack pipe. - URO - Volkswagen

Bypass pipe located underneath intake manifold. Also known as the crack pipe. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2738867
Mfg#:
021121050C
Ships in 1 day
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thrust Ring

ES#285908 - 07K109163A - Thrust Ring - Found between the coolant flange seal and the cylinder head - Genuine Volkswagen Audi - Audi Volkswagen

Found between the coolant flange seal and the cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
285908
Mfg#:
07K109163A
Ships in 1 day
10% off MSRP

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

$59.99

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

$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

O-Ring - Priced Each

ES#472388 - WHT000862 - O-Ring - Priced Each - Used for sealing coolant passages. 29x3.5mm - Genuine Volkswagen Audi - Volkswagen

Used for sealing coolant passages. 29x3.5mm affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472388
Mfg#:
WHT000862
In Stock
20% off MSRP

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

$4.99

This product was last offered at the strikethrough price on
06-04-2026

$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Coolant Flange

ES#2187573 - 058121132A - Cylinder Head Coolant Flange - Located on the back of the cylinder head - URO - Audi Volkswagen

Located on the back of the cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with AUG or AWM engine codes only.

Brand:
URO - Corporate Logo
ES#:
2187573
Mfg#:
058121132A
Ships in 1 Business Day
$6.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Glow Plug Cable Repair Kit

Electrical connection to coolant glow plug affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Coolant Glow Plug Harness - 3 required

Brand:
SenCom - Corporate Logo
ES#:
5446466
Mfg#:
20517GKB
Ships on Jun 25, 2026
$23.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#1906430 - 032121142 - Sensor Retaining Clip - Priced Each - Secures the coolant temperature sensor in place. - MTC - Audi Volkswagen

Secures the coolant temperature sensor in place. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MTC - Corporate Logo
ES#:
1906430
Mfg#:
032121142
In Stock
ON SALE! SAVE 50%
$1.99

This product was last offered at the strikethrough price on
01-03-2026

$0.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#3190081 - 902-956 - Thermostat Housing - Common point of failure or leaking for the cooling system - Dorman - Audi Volkswagen

Common point of failure or leaking for the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Dorman - Corporate Logo
ES#:
3190081
Mfg#:
902-956
Ships in 4 Business Days
$21.99 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!

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