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Volkswagen Passat B6 4 Motion 3.6L Engine Thermostat 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 3 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.

$69.99

This product was last offered at the strikethrough price on
06-14-2026

$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2794834 - 03H121113KT1 - Thermostat Replacement Kit - Designed to easy installation procedure of thermostat and prevent a re-do - Assembled By ECS - Volkswagen

Designed to easy installation procedure of thermostat and prevent a re-do affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2794834
Mfg#:
03H121113KT1
Ships in 3 Business Days
ON SALE!
$232.99

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

$226.76 USD
Free Shipping
This product is lifetime replacement eligible Partial 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 3 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.

$209.99

This product was last offered at the strikethrough price on
06-14-2026

$195.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3469659 - 03H121113 - Thermostat - Helps your engine regulate its temperature - Rein - Audi Volkswagen

Helps your engine regulate its temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3469659
Mfg#:
03H121113
In Stock at Vendor
$54.99 USD
Free Shipping
on orders $49 and up
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#3561937 - 03H121113D - Thermostat - Helps your engine regulate its temperature - Genuine Volkswagen Audi - Audi Volkswagen

Helps your engine regulate its temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3561937
Mfg#:
03H121113D
Ships in 3 Business 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.

$126.99

This product was last offered at the strikethrough price on
06-14-2026

$118.99 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 2 Business Days
$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#472389 - WHT000863 - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat. 56.2x3 - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal when installing your new thermostat. 56.2x3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472389
Mfg#:
WHT000863
Ships in 3 Business Days
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3234722 - 03H121113 - Thermostat - Helps your engine regulate its temperature - Gates - Audi Volkswagen

Helps your engine regulate its temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Gates - Corporate Logo
ES#:
3234722
Mfg#:
03H121113
Ships on Jul 2, 2026
$68.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#470116 - N90533005 - hex head Bolt - Priced Each - Install new hardware with your new parts. M6x20 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the thermostat cover to the thermostat housing

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470116
Mfg#:
N90533005
Ships in 3 Business Days
25% off MSRP

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

$3.99

This product was last offered at the strikethrough price on
06-01-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#5396374 - 03H121113D - Thermostat - Helps your engine regulate its temperature - URO - Audi Volkswagen

Helps your engine regulate its temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
URO - Corporate Logo
ES#:
5396374
Mfg#:
03H121113D
In Stock
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Helps your engine regulate its temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MotoRad
ES#:
3220624
Mfg#:
03H121113
In Stock at Vendor
$28.99

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

$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#275815 - 03H121142 - clip - priced each - Secures adapter to thermostat housing - Genuine Volkswagen Audi - Volkswagen

Secures adapter to thermostat housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275815
Mfg#:
03H121142
In Stock
Limited Qty Sale
$6.99

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

$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2794833 - 03h121113KT - Thermostat Replacement Kit - Designed to ease installation procedure of thermostat and prevent a re-do - Genuine Volkswagen Audi - Volkswagen

Designed to ease installation procedure of thermostat and prevent a re-do affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2794833
Mfg#:
03H121113KT
Ships in 3 Business Days
$250.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

More About Engine Thermostat Parts

Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.

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

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