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Audi A4 Engine Thermostat Parts

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Thermostat

ES#2539450 - 06H121113B - Thermostat - Keep your cooling system efficient - Febi - Audi Volkswagen

Keep your cooling system efficient We Price Match - Give Us A Call or Chat!
For vehicles up to production date 6/3/2012

Brand:
Febi - Corporate Logo
ES#:
2539450
Mfg#:
06H121113B
Ships on Dec 7, 2026
$59.99 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
Ships in 2 Business Days
$3.99

This product was last offered at the strikethrough price on
03-15-2026

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

Thermostat

ES#3234814 - 06E121111G - Thermostat - Includes housing and gasket. - Gates - Audi

Includes housing and gasket.

Brand:
Gates - Corporate Logo
ES#:
3234814
Mfg#:
06E121111G
Ships on Sep 29, 2026
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2608020 - 06H121113BKT4 - Thermostat Replacement Kit - Keep your cooling system efficient with a new thermostat, housing and o-ring - Assembled By ECS - Audi

Keep your cooling system efficient with a new thermostat, housing and o-ring 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with Inzi water pumps up to production date 6/3/2012

Brand:
Assembled By ECS - Corporate Logo
ES#:
2608020
Mfg#:
06H121113BKT4
Ships in 3 Business Days
ON SALE! SAVE 14%
$29.99

This product was last offered at the strikethrough price on
05-02-2026

$25.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Assembly - (NO LONGER AVAILABLE)

ES#3149419 - 06D121111G - Thermostat Assembly - (NO LONGER AVAILABLE) - Keep your cooling system operating properly - Rein - Audi

Keep your cooling system operating properly 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3149419
Mfg#:
06D121111G
Ships in 3 Business Days
ON SALE!
$53.99

This product was last offered at the strikethrough price on
08-31-2026

$51.29 USD
Free Shipping
on orders $49 and up

Water Pump

ES#3199837 - 06H121026BA - Water Pump - Features plastic impeller and includes gasket - URO - Audi Volkswagen

Features plastic impeller and includes gasket 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3199837
Mfg#:
06H121026BA
Ships in 1 Business Day
$49.99 USD
Free Shipping
on orders $49 and up

Thermostat Assembly

ES#2586266 - 06D121111G - Thermostat Assembly - Includes sealing o-ring - Vemo - Audi

Includes sealing o-ring

Brand:
Vemo - Corporate Logo
ES#:
2586266
Mfg#:
06D121111G
Special Order: No Guaranteed ETA
$86.99

This product was last offered at the strikethrough price on
04-15-2026

$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Assembly

ES#3961 - 06C121111C - Thermostat Assembly - Housing included - Wahler - Audi

Housing included

Brand:
Wahler - Corporate Logo
ES#:
3961
Mfg#:
06C121111C
In Stock
$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#3430609 - 06H121113B - Thermostat - Keep your cooling system efficient - Behr - Audi Volkswagen

Keep your cooling system efficient For vehicles up to production date 6/3/2012

Brand:
Behr - Corporate Logo
ES#:
3430609
Mfg#:
06H121113B
Ships on Sep 25, 2026
$47.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#2813087 - 06H121026BA - Water Pump - Includes water pump and seal. - Hamburg Tech - Audi Volkswagen

Includes water pump and seal. We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813087
Mfg#:
06H121026BA
Ships in 1 Business Day
$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2762251 - 06C121111EKT1 - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housing and hardware - Assembled By ECS - Audi

Maintain proper operating temperature with a new thermostat, housing and hardware 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2762251
Mfg#:
06C121111EKT1
Ships in 2 Business Days
ON SALE! SAVE 24%
$57.99

This product was last offered at the strikethrough price on
05-02-2026

$44.12 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

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

Thermostat (92 deg. C)

ES#2894962 - 078121113G - Thermostat (92 deg. C) - Includes sealing O-Ring - Vemo - Audi Volkswagen

Includes sealing O-Ring From VIN 8D-X-315001, split is in the 1999 model year

Brand:
Vemo - Corporate Logo
ES#:
2894962
Mfg#:
078121113G
Ships in 1 Business Day
$18.99

This product was last offered at the strikethrough price on
07-02-2026

$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 92�C

Includes sealing O-Ring From VIN 8D-X-315001, split is in the 1999 model year

Brand:
Gates - Corporate Logo
ES#:
3234892
Mfg#:
078121113G
Ships on Sep 29, 2026
$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Gasket

ES#4220540 - 06E121119B - Thermostat Gasket - Ensure a proper seal when installing your new thermostat - Victor Reinz - Audi

Ensure a proper seal when installing your new thermostat

Brand:
Victor Reinz - Corporate Logo
ES#:
4220540
Mfg#:
06E121119B
In Stock
$8.99

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

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

Thermostat Hose

ES#2803241 - 06E121445B - Thermostat Hose - Connects the thermostat to the coolant flange - Rein - Audi

Connects the thermostat to the coolant flange 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803241
Mfg#:
06E121445B
In Stock at Vendor
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime 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.

Let us help you find the parts that fit your Audi

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