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Volkswagen Passat Engine Coolant Flanges & Parts

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Thermostat Housing

ES#2804447 - 06B121121L - Thermostat Housing - Located on the left side of the engine block - Bremmen Parts - Audi Volkswagen

Located on the left side of the engine block 10X Entries Into Our F80 M3 Sweepstakes

For vehicles with AUG or AWM engine codes only.

Brand:
Bremmen Parts - Corporate Logo
ES#:
2804447
Mfg#:
06B121121L
In Stock
ON SALE! SAVE 15%
$9.99

This product was last offered at the strikethrough price on
09-16-2026

$8.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug - Priced Each

ES#333289 - 357121140 - Coolant Flange Plug - Priced Each - Prevent leaks with a new plug - Genuine Volkswagen Audi - Audi Volkswagen

Prevent leaks with a new plug

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
333289
Mfg#:
357121140
In Stock
14% off MSRP

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

$13.99

This product was last offered at the strikethrough price on
10-19-2026

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

Cast Aluminum Cylinder Head Cooling Flange

ES#4070439 - 462-121-132b5KT - Cast Aluminum Cylinder Head Cooling Flange - Located on the back of the cylinder head - iABED Industries - Audi Volkswagen

Located on the back of the cylinder head For vehicles with AUG or AWM engine codes only.

Brand:
iABED Industries - Corporate Logo
ES#:
4070439
Mfg#:
462-121-132B5KT
Back Ordered
$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Cover

ES#2708826 - 021121121A - Thermostat Housing Cover - Covers the thermostat, located on the coolant flange - URO - Volkswagen

Covers the thermostat, located on the coolant flange 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2708826
Mfg#:
021121121A
In Stock
$4.99 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

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

Cooling Pipe Adaptor

ES#2709095 - 021121133D - Cooling Pipe Adaptor - Cooling pipe adaptor from crack pipe to thermostat housing - URO - Volkswagen

Cooling pipe adaptor from crack pipe to thermostat housing 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2709095
Mfg#:
021121133D
In Stock
$4.99

This product was last offered at the strikethrough price on
07-14-2026

$3.85 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. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2738867
Mfg#:
021121050C
In Stock
$16.99

This product was last offered at the strikethrough price on
10-06-2026

$9.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2631520 - 078121121K - Thermostat Housing - Located on the front right of the engine block - Vaico - Audi Volkswagen

Located on the front right of the engine block We Price Match - Give Us A Call or Chat!
For vehicles with VIN from 3B-1-050 001 only, split is in the 2001 model year

Brand:
Vaico - Corporate Logo
ES#:
2631520
Mfg#:
078121121K
Special Order: No Guaranteed ETA
$76.10

This product was last offered at the strikethrough price on
05-10-2026

$72.48 USD
Free Shipping
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
Ships in 1 Business Day
$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 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

Brand:
Dorman - Corporate Logo
ES#:
3190081
Mfg#:
902-956
Ships in 5 Business Days
$21.99 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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
466546
Mfg#:
N0147821
In Stock
Limited Qty Sale
$6.99 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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3546691
Mfg#:
03H121091KT
Ships in 2 Business Days
$61.99

This product was last offered at the strikethrough price on
10-05-2026

$59.99 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 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

Cooling Hose Flange - Upgraded Aluminum

ES#4932881 - 95510623100PRM - Cooling Hose Flange - Upgraded Aluminum - Ditch the failure-prone factory plastic and bulletproof your cooling system. - URO Premium - Audi Volkswagen Porsche

Ditch the failure-prone factory plastic and bulletproof your cooling system. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO Premium - Corporate Logo
ES#:
4932881
Mfg#:
95510623100PRM
Ships in 1 Business Day
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Cooling Flange

ES#4714621 - 06J121132G - Cylinder Head Cooling Flange - Common area for coolant leaks - Located on cylinder head - URO - Audi Volkswagen

Common area for coolant leaks - Located on cylinder head 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Fits vehicles with CCTA engine code only

Brand:
URO - Corporate Logo
ES#:
4714621
Mfg#:
06J121132G
Ships in 1 Business Day
$10.99 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
In Stock
$2.99 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

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