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Audi S4 Engine Parts & Accessories

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Oxygen Sensor - Priced Each

ES#11898 - 16978 - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Bosch - Audi

Keep your engine running efficiently Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
11898
Mfg#:
16978
Ships in 1 Business Day
$128.99

This product was last offered at the strikethrough price on
05-19-2026

$118.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High-Pressure Fuel Pump Kit

ES#4820947 - 06M127026PKT1 - High-Pressure Fuel Pump Kit - Includes HPFP, O-ring, Cam follower, and hardware - Assembled By ECS - Audi

Includes HPFP, O-ring, Cam follower, and hardware 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For vehicles with production date from 06/15/2020

Brand:
Assembled By ECS - Corporate Logo
ES#:
4820947
Mfg#:
06M127026PKT1
Ships in 1 day
$775.99

This product was last offered at the strikethrough price on
10-05-2026

$772.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#4871985 - 8E1820031 - Heater Core - Stop coolant leaks, restore heater operation, and cure a fogged windshield! - Bremmen Parts - Audi

Stop coolant leaks, restore heater operation, and cure a fogged windshield! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Bremmen Parts - Corporate Logo
ES#:
4871985
Mfg#:
8E1820031
In Stock
ON SALE! SAVE 15%
$66.99

This product was last offered at the strikethrough price on
09-16-2026

$56.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#1942 - 8D1819030B - Heater Core - Stop coolant loss and cure a fogged windshield - Febi - Audi Volkswagen

Stop coolant loss and cure a fogged windshield Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
1942
Mfg#:
8D1819030B
In Stock
$58.25

This product was last offered at the strikethrough price on
05-12-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lower Guide Rail

ES#4690013 - 079109510E - Lower Guide Rail - The lower chain guide on the right timing chain - Bremmen Parts - Audi

The lower chain guide on the right timing chain 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Bremmen Parts - Corporate Logo
ES#:
4690013
Mfg#:
079109510E
In Stock
ON SALE! SAVE 18%
$93.99

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

$76.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Dowel Pin - Priced Each

ES#3087256 - 8W0805121 - Dowel Pin - Priced Each - Used to secure the belly pan to the underside of the vehicle - Genuine Volkswagen Audi - Audi

Used to secure the belly pan to the underside of the vehicle Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3087256
Mfg#:
8W0805121
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Washer Fluid Reservoir Cap - Funnel Style

ES#4030831 - 6V0955485 - Washer Fluid Reservoir Cap - Funnel Style - Top your windshield washer fluid off without spilling! - Genuine Skoda - Audi Volkswagen

Top your windshield washer fluid off without spilling! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Skoda - Corporate Logo
ES#:
4030831
Mfg#:
6V0955485
Ships on Feb 22, 2027
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Gasket - Left

ES#2737552 - 06E103483Q - Valve Cover Gasket - Left - Stop oil leaks and prevent internal engine damage - Genuine Volkswagen Audi - Audi

Stop oil leaks and prevent internal engine damage Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2737552
Mfg#:
06E103483Q
In Stock
7% off MSRP

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

$78.34

This product was last offered at the strikethrough price on
10-28-2026

$72.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lower Radiator Hose

ES#4899608 - 8K0121055B - Lower Radiator Hose - Direct replacement for your worn or cracked hose - Rein - Audi

Direct replacement for your worn or cracked hose 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4899608
Mfg#:
8K0121055B
In Stock
$72.99 USD
Free Shipping
on orders $49 and up

JE Forged Stroker Piston Sets - 82mm Bore

Increased displacement to 3.0 liters is accomplished by using a larger 92.8mm stroke crankshaft and 154X21 connecting rod. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Requires Audi factory 3.0L 30V (AVK) crankshaft & IE 154x21 Forged Connecting Rods

Brand:
Integrated Engineering - Corporate Logo
ES#:
4883056
Mfg#:
JE-PVD-1
Ships in 4 Business Days
$1529.99 USD
Free Shipping
on orders $49 and up

JHM Stainless Steel Downpipes

2.5" stainless steel downpipes made in one piece, stopping those pesky leaks. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For models with manual transmission only.

Brand:
JH Motorsports - Corporate Logo
ES#:
4638076
Mfg#:
JHM-251
Ships in 10 Business Days
$1528.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Upper Timing Chain

ES#3031659 - 06E109465AS - Upper Timing Chain - Turns the camshafts from the relay sprocket - Iwis - Audi

Turns the camshafts from the relay sprocket Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Upper left chain

Brand:
Iwis - Corporate Logo
ES#:
3031659
Mfg#:
06E109465AS
Ships in 1-2 days
$138.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Injector- Priced Each

ES#4416610 - 06M906036AP - Fuel Injector- Priced Each - Replace your old and failing injectors - Genuine Volkswagen Audi - Audi

Replace your old and failing injectors Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For vehicles with production date from 06/15/2020

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4416610
Mfg#:
06M906036AP
In Stock
Limited Qty Sale
$213.00

This product was last offered at the strikethrough price on
06-15-2026

$190.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Engine Oil Cap - Black Anodized

ES#4030546 - 022735ecs0101akt - Billet Engine Oil Cap - Black Anodized - Lose the plastic! - ECS - Audi Volkswagen

Lose the plastic! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
ECS - Corporate Logo
ES#:
4030546
Mfg#:
022735ECS0101AKT
In Stock
ON SALE!
$104.99

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

$101.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve (N249) - Priced Each

ES#4818403 - 026906283J - Solenoid Valve (N249) - Priced Each - Controls actuation of the Combi Valve or Diverter Valve - Bremmen Parts - Audi Volkswagen

Controls actuation of the Combi Valve or Diverter Valve 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818403
Mfg#:
026906283J
In Stock
ON SALE! SAVE 20%
$49.99

This product was last offered at the strikethrough price on
09-16-2026

$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Crankshaft Seal

ES#3419061 - 079103051F - Rear Crankshaft Seal - Also referred to as the rear main seal - Corteco - Audi Volkswagen

Also referred to as the rear main seal Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Corteco - Corporate Logo
ES#:
3419061
Mfg#:
079103051F
In Stock
$22.99

This product was last offered at the strikethrough price on
06-09-2026

$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

Let us help you find the parts that fit your Audi

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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