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Audi A4 Engine Coolant Flanges & Parts

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ES#2804122 - 058121132KT1 - Cooling Flange Replacement Kit - Cure the common coolant leak coming from the back of your engine compartment - Assembled By ECS - Audi

Cure the common coolant leak coming from the back of your engine compartment affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AEB & ATW engine codes with D-shaped coolant temp sensor

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804122
Mfg#:
058121132KT1
Ships in 6 Business Days
ON SALE! SAVE 15%
$54.99

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

$46.92 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#471150 - N90912501 - O-Ring - Priced Each - 32x5 - Genuine Volkswagen Audi - Audi

32x5 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471150
Mfg#:
N90912501
In Stock at Vendor
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2813064 - 06D121111G - Thermostat Assembly - Includes sealing o-ring - Hamburg Tech - Audi

Includes sealing o-ring 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#:
2813064
Mfg#:
06D121111G
Ships in 1 Business Day
$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#281548 - 06J121121 - Thermostat Housing - Plastic flange for the thermostat that connects to the water pump housing - Genuine Volkswagen Audi - Audi

Plastic flange for the thermostat that connects to the water pump housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with Behr water pumps

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281548
Mfg#:
06J121121
Ships in 2 Business Days
10% off MSRP

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

$47.99

This product was last offered at the strikethrough price on
06-07-2026

$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#6802 - N90560701 - O-Ring - Priced Each - 30x5 - Ensure a proper seal with a new o-ring - Victor Reinz - Audi

30x5 - Ensure a proper seal with a new o-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
6802
Mfg#:
N90560701
In Stock
$2.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
2804447
Mfg#:
06B121121L
In Stock
ON SALE! SAVE 27%
$9.99

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

$7.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#470104 - N90529302 - Hex Bolt - Priced Each - Install new hardware with your new parts. M6x10 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x10 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the water supply pipe to the cylinder head coolant flange

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470104
Mfg#:
N90529302
Ships in 2 Business Days
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#11965 - 357121140 - Coolant Flange Plug Kit - Priced Each - Includes the plug, o-ring and securing clip - MTC - Audi Volkswagen

Includes the plug, o-ring and securing clip affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MTC - Corporate Logo
ES#:
11965
Mfg#:
357121140
In Stock
$3.05 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4736834 - 06E121139E - Coolant Flange Gasket - Seals the coolant flange to the engine block - Elring - Audi

Seals the coolant flange to the engine block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4736834
Mfg#:
06E121139E
In Stock at Vendor
$11.10 USD
Free Shipping
on orders $49 and up
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 thermostat housing to the water pump

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
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
ES#3353262 - N90365302 - Sealing O-Ring - Priced Each - Genuine Porsche - Audi Volkswagen

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
O-Ring for the faulty coolant "J-Plug" that is located next to the thermostat.

Brand:
Genuine Porsche - Corporate Logo
ES#:
3353262
Mfg#:
N90365302
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3149419 - 06D121111G - Thermostat Assembly - (NO LONGER AVAILABLE) - Keep your cooling system operating properly - Rein - Audi

Keep your cooling system operating properly 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#:
3149419
Mfg#:
06D121111G
Ships in 3 Business Days
$53.99 USD
Free Shipping
on orders $49 and up
ES#3559890 - 06D121132C - Coolant Hose Flange  - Located rear engine, this flange houses the temp sensor - Hamburg Tech - Audi

Located rear engine, this flange houses the temp sensor 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#:
3559890
Mfg#:
06D121132C
Ships in 1 Business Day
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2804121 - 058121132KT - Cooling Flange Replacement Kit - Cure the common coolant leak coming from the back of your engine compartment - Assembled By ECS - Audi

Cure the common coolant leak coming from the back of your engine compartment affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AEB & ATW engine codes with square coolant temp sensor

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804121
Mfg#:
058121132KT
Ships on Sep 30, 2026
ON SALE! SAVE 10%
$57.99

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

$52.38 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2586266 - 06D121111G - Thermostat Assembly - Includes sealing o-ring - Vemo - Audi

Includes sealing o-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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

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 Audi

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

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