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Audi S4 Engine Coolant Flanges & Parts

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Coolant Pipe - Supply

ES#4845326 - 06E121045BB - Coolant Pipe - Supply - Main supply pipe that connects to the upper radiator hose and the engine - URO - Audi

Main supply pipe that connects to the upper radiator hose and the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
From the 2013 model year

Brand:
URO - Corporate Logo
ES#:
4845326
Mfg#:
06E121045BB
In Stock
$90.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Shut Off Valve

ES#4476638 - 06M121678H - Coolant Shut Off Valve - Controls the circulation of coolant within the engine via vacuum - Genuine Volkswagen Audi - Audi

Controls the circulation of coolant within the engine via vacuum affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4476638
Mfg#:
06M121678H
Ships in 2 Business Days
18% off MSRP

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

$190.82

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

$155.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Supply

ES#4759780 - 06E121045BB - Coolant Pipe - Supply - Main supply pipe that connects to the upper radiator hose and the engine - Rein - Audi

Main supply pipe that connects to the upper radiator hose and the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
From the 2013 model year

Brand:
Rein - Corporate Logo
ES#:
4759780
Mfg#:
06E121045BB
In Stock
$144.99 USD
Free Shipping
on orders $49 and up

Thermostat Housing (Aluminum)

ES#3659371 - 078121121J - Thermostat Housing (Aluminum) - Aluminum design - Located on the front right of the engine block - URO - Audi Volkswagen

Aluminum design - Located on the front right of the engine block 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#:
3659371
Mfg#:
078121121J
In Stock
$155.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Supply

ES#3132775 - 06E121045BB - Coolant Pipe - Supply - Main supply pipe that connects to the upper radiator hose and the engine - Genuine Volkswagen Audi - Audi

Main supply pipe that connects to the upper radiator hose and the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3132775
Mfg#:
06E121045BB
In Stock
10% off MSRP

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

$206.64

This product was last offered at the strikethrough price on
01-07-2026

$186.76 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Shut Off Valve

ES#4871918 - 06M121678H - Coolant Shut Off Valve - Controls the circulation of coolant within the engine via vacuum - Bremmen Parts - Audi

Controls the circulation of coolant within the engine via vacuum affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4871918
Mfg#:
06M121678H
Ships on Jul 6, 2026
Auto Notify
ON SALE! SAVE 17%
$118.99

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

$98.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#3659374 - 07812112jKT4 - Thermostat Replacement Kit - Keep your cooling system efficient with a new thermostat and housing - Assembled By ECS - Audi

Keep your cooling system efficient with a new thermostat and housing 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#:
3659374
Mfg#:
07812112JKT4
In Stock
ON SALE!
$180.99

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

$171.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Supply

ES#4812552 - 06E121045BD - Coolant Pipe - Supply - Main supply pipe that connects to the upper radiator hose and the engine - Rein - Audi

Main supply pipe that connects to the upper radiator hose and the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Up to the 2012 model year

Brand:
Rein - Corporate Logo
ES#:
4812552
Mfg#:
06E121045BD
In Stock
$93.99 USD
Free Shipping
on orders $49 and up

Integrated Thermostat Housing Assembly

ES#4900436 - 946-189 - Integrated Thermostat Housing Assembly - Includes thermostat and housing. - MotoRad - Audi

Includes thermostat and housing. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MotoRad
ES#:
4900436
Mfg#:
946-189
In Stock at Vendor
$504.63

This product was last offered at the strikethrough price on
02-16-2026

$484.02 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upper Water Pipe

ES#4818463 - 06E121083N - Upper Water Pipe - Connects supply/return cooling lines to the supercharger - Bremmen Parts - Audi

Connects supply/return cooling lines to the supercharger affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818463
Mfg#:
06E121083N
In Stock
ON SALE! SAVE 21%
$104.99

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

$83.22 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Torx Bolt - priced each

ES#471885 - N91096801 - Torx Bolt - priced each - Bolts transmission oil pan to transmission. M6x20 - Genuine Volkswagen Audi - Audi Volkswagen

Bolts transmission oil pan to transmission. M6x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471885
Mfg#:
N91096801
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#4727594 - 06E121119J - Sealing O-Ring - Priced Each - Seals the coolant flange to the supercharger compressor - Elring - Audi

Seals the coolant flange to the supercharger compressor 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#:
4727594
Mfg#:
06E121119J
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Supply

ES#3628568 - 06E121045BD - Coolant Pipe - Supply - Main supply pipe that connects to the upper radiator hose and the engine - Genuine Volkswagen Audi - Audi

Main supply pipe that connects to the upper radiator hose and the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3628568
Mfg#:
06E121045BD
Ships in 1-2 days
13% off MSRP

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

$230.49

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

$201.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hexagon Socket Head Bolt - Priced Each

ES#467456 - N10124306 - Hexagon Socket Head Bolt - Priced Each - M6x20 bolt used in various areas on your European vehicle - Genuine Volkswagen Audi - Audi Volkswagen

M6x20 bolt used in various areas on your European vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures cooling flange/water pipe to cylinder heads

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467456
Mfg#:
N10124306
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Torx Bolt - Priced Each

ES#468845 - N10700201 - Torx Bolt - Priced Each - Bolt used in various areas on your European vehicle. M6x22 - Genuine Volkswagen Audi - Audi Volkswagen

Bolt used in various areas on your European vehicle. M6x22 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 01/24/2022

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
468845
Mfg#:
N10700201
In Stock
42% off MSRP

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

$5.14

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

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

Round Seal - Priced Each

ES#4685659 - 06E121119K - Round Seal - Priced Each - Install a new o-ring for a proper seal. 31.9x3.3x5.3 - Victor Reinz - Audi

Install a new o-ring for a proper seal. 31.9x3.3x5.3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
4685659
Mfg#:
06E121119K
In Stock
$6.19 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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