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Audi S4 Engine Coolant Flanges & Parts

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Coolant Flange

ES#2742783 - 06E121161BB - Coolant Flange - Located on the front of the engine block - Genuine Volkswagen Audi - Audi

Located on the front of the engine block

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2742783
Mfg#:
06E121161BB
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.

$152.99

This product was last offered at the strikethrough price on
07-22-2026

$141.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Gasket

ES#4727688 - 06E121139H - Coolant Flange Gasket - Seals the coolant flange to the engine block - Victor Reinz - Audi

Seals the coolant flange to the engine block

Brand:
Victor Reinz - Corporate Logo
ES#:
4727688
Mfg#:
06E121139H
In Stock
$7.99 USD
Free Shipping
on orders $49 and up

Allen head Bolt (4mm) - Priced Each

ES#2770175 - N10196103 - Allen head Bolt (4mm) - Priced Each - Install new hardware with your new parts. Black oxide coated, M6x18. - ECS - Audi Volkswagen
ECS Tuning recommends this product.

Install new hardware with your new parts. Black oxide coated, M6x18. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2770175
Mfg#:
N10196103
In Stock
ON SALE! SAVE 25%
$1.29

This product was last offered at the strikethrough price on
06-13-2026

$0.97 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Shut Off Valve

ES#5469770 - 06M121678H - Coolant Shut Off Valve - Controls the circulation of coolant within the engine via vacuum - Hamburg Tech - Audi

Controls the circulation of coolant within the engine via vacuum

Brand:
Hamburg Tech - Corporate Logo
ES#:
5469770
Mfg#:
06M121678H
Ships in 1 Business Day
$109.99 USD

Compressor Flange Water Hose - Left

ES#280805 - 06E121545 - Compressor Flange Water Hose - Left - Connects the supercharger flange to the hard water line - Genuine Volkswagen Audi - Audi

Connects the supercharger flange to the hard water line

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280805
Mfg#:
06E121545
In Stock
ON SALE! SAVE 16%
$12.99

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

$10.97 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upper Coolant Flange Union

ES#3627515 - 06M121137AD - Upper Coolant Flange Union - Includes o-ring seal - Genuine Volkswagen Audi - Audi

Includes o-ring seal

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3627515
Mfg#:
06M121137AD
Ships in 1 day
9% off MSRP

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

$113.99

This product was last offered at the strikethrough price on
07-22-2026

$103.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Hose O-ring

ES#3419387 - 06E121119C - Thermostat Hose O-ring - Seals the coolant pipe to the thermostat housing. 23x28.4x4.5 - Victor Reinz - Audi

Seals the coolant pipe to the thermostat housing. 23x28.4x4.5

Brand:
Victor Reinz - Corporate Logo
ES#:
3419387
Mfg#:
06E121119C
Ships in 1 Business Day
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Water Pipe Gasket - Priced Each

ES#284790 - 079121091D - Cylinder Head Water Pipe Gasket - Priced Each - Gasket for the cylinder head flange/water pipe - Two required - Genuine Volkswagen Audi - Audi

Gasket for the cylinder head flange/water pipe - Two required

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284790
Mfg#:
079121091D
Ships in 1 day
33% off MSRP

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

$11.85

This product was last offered at the strikethrough price on
07-22-2026

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

Spring Band Clamp - Priced Each (35x12)

ES#280094 - 06B145917 - Spring Band Clamp - Priced Each (35x12) - Spring band clamp used in various areas on your European vehicle - Genuine Volkswagen Audi - Audi

Spring band clamp used in various areas on your European vehicle 35x12 spring clamp used in many places on your European vehicles cooling system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280094
Mfg#:
06B145917
Ships in 1 day
8% off MSRP

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

$11.99

This product was last offered at the strikethrough price on
07-22-2026

$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

O-Ring - Priced Each

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

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

Thermostat Housing

ES#281937 - 074121121B - Thermostat Housing - Located behind water pump housing - Genuine Volkswagen Audi - Audi Volkswagen

Located behind water pump housing

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281937
Mfg#:
074121121B
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.

$55.99

This product was last offered at the strikethrough price on
07-22-2026

$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Water Pipe Gasket - Priced Each

ES#2803259 - 079121091D - Cylinder Head Water Pipe Gasket - Priced Each - Gasket for the cylinder head flange/water pipe - Two required - Rein - Audi

Gasket for the cylinder head flange/water pipe - Two required 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803259
Mfg#:
079121091D
In Stock at Vendor
$3.99 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
In Stock
ON SALE! SAVE 27%
$3.99

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

$2.90 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Connection piece

ES#283956 - 078145755B - Connection piece - Threads into the rear coolant pipe to attach the expansion tank hose - Genuine Volkswagen Audi - Audi

Threads into the rear coolant pipe to attach the expansion tank hose

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283956
Mfg#:
078145755B
Ships in 4 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.

$30.99

This product was last offered at the strikethrough price on
07-22-2026

$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#4940095 - 032121142 - Sensor Retaining Clip - Priced Each - Used for ECS 2.0T boost taps - Bremmen Parts - Audi Volkswagen

Used for ECS 2.0T boost taps 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940095
Mfg#:
032121142
In Stock
ON SALE! SAVE 59%
$1.99

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

$0.81 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#2865558 - 025121142 - Sensor Retaining Clip - Priced Each - Secures the coolant temperature sensor in place - Febi - Audi Volkswagen

Secures the coolant temperature sensor in place 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2865558
Mfg#:
025121142
Ships on Oct 20, 2026
Auto Notify
$3.99 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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