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Volkswagen Passat B6 4 Motion 3.6L Engine Coolant Flanges & Parts

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ES#4045693 - 03H121117APRM - Aluminum Thermostat Housing - Common point of failure or leaking for the cooling system. Features a superior aluminum construction over the factory plastic unit. - URO Premium - Audi Volkswagen

Common point of failure or leaking for the cooling system. Features a superior aluminum construction over the factory plastic unit. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

For vehicles with VIN from 3C-7-120 001 only, split is in the 2007 model year

Brand:
URO Premium - Corporate Logo
ES#:
4045693
Mfg#:
03H121117APRM
Ships on Jul 9, 2026
$111.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2812945 - 03H121121C - Thermostat Cover - Outlet for coolant from the thermostat - Hamburg Tech - Audi 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#:
2812945
Mfg#:
03H121121C
In Stock
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#275812 - 03H121121C - Thermostat Cover - Outlet for coolant from the thermostat - Genuine Volkswagen Audi - Audi Volkswagen

Outlet for coolant from the thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275812
Mfg#:
03H121121C
Ships in 1 day
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
06-15-2026

$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#275814 - 03H121133 - Cylinder Head Cooling Flange - Located on the side of the engine attached to the thermostat housing - Genuine Volkswagen Audi - Audi Volkswagen

Located on the side of the engine attached to the thermostat housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275814
Mfg#:
03H121133
In Stock
ON SALE!
$54.99

This product was last offered at the strikethrough price on
06-15-2026

$52.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#275811 - 03H121117A - Thermostat Housing - Common point of failure or leaking for the cooling system - Genuine Volkswagen Audi - Audi Volkswagen

Common point of failure or leaking for the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with VIN from 3C-7-120 001 only, split is in the 2007 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275811
Mfg#:
03H121117A
Ships in 1 day
7% off MSRP

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

$209.99

This product was last offered at the strikethrough price on
06-15-2026

$195.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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
ES#275817 - 03H121145A - Coolant pipe - Hose connection found on the back of the block - Genuine Volkswagen Audi - Volkswagen

Hose connection found on the back of the block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275817
Mfg#:
03H121145A
Ships in 1 day
7% off MSRP

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

$56.99

This product was last offered at the strikethrough price on
06-15-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#275813 - 03H121131A - Coolant flange - Adapter found on the end of the thermostat housing - Genuine Volkswagen Audi - Volkswagen

Adapter found on the end of the thermostat housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275813
Mfg#:
03H121131A
Ships in 1 day
7% off MSRP

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

$56.99

This product was last offered at the strikethrough price on
06-15-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#5425901 - 03H121117A - Thermostat Housing - Common point of failure or leaking for the cooling system - Hamburg Tech - Audi Volkswagen

Common point of failure or leaking for the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with VIN from 3C-7-120 001 only, split is in the 2007 model year

Brand:
Hamburg Tech - Corporate Logo
ES#:
5425901
Mfg#:
03H121117A
Ships in 1 Business Day
$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4446147 - 03H121133 - Cylinder Head Cooling Flange - Located on the side of the engine attached to the thermostat housing - URO - Audi Volkswagen

Located on the side of the engine attached to the thermostat housing 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#:
4446147
Mfg#:
03H121133
Ships on Jul 9, 2026
$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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
ES#5446936 - 03H121145A-AL - Aluminum Coolant Pipe - Hose connection found on the back of the block - Hamburg Tech - Volkswagen

Hose connection found on the back of the block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hamburg Tech - Corporate Logo
ES#:
5446936
Mfg#:
03H121145A-AL
Ships in 1 Business Day
$30.99 USD
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
06-15-2026

$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4415619 - 03H121131A - Coolant Flange - Adapter found on the end of the thermostat housing - URO - Audi Volkswagen

Adapter found on the end of the thermostat housing 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#:
4415619
Mfg#:
03H121131A
Ships in 1 Business Day
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#275801 - 03H121041B - Coolant pipe gasket - For the hose connection found on the back of the block - Genuine Volkswagen Audi - Volkswagen

For the hose connection found on the back of the block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275801
Mfg#:
03H121041B
Ships in 1 day
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#5340821 - 03H121041B - Coolant Pipe Gasket - For the hose connection found on the back of the block - Elring - Volkswagen

For the hose connection found on the back of the block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Elring - Corporate Logo
ES#:
5340821
Mfg#:
03H121041B
Special Order: No Guaranteed ETA
$2.99 USD
Free Shipping
on orders $49 and up

More About Engine Coolant Flanges & Parts

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

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Manufacturer names and/or part numbers are used only for identification purposes.

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