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Audi S4 Most Popular Parts

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APR Open Carbon Fiber Intake System

ES#3579697 - CI100037 - APR Open Carbon Fiber Intake System - APR's ultimate intake system for the 3.0 TFSI - APR - Audi

APR's ultimate intake system for the 3.0 TFSI Call In Or Chat For Best Price! 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:
APR - Corporate Logo
ES#:
3579697
Mfg#:
CI100037
EO#:
D-782-8
Ships in 8 Business Days
ON SALE! SAVE 10%
$579.99

This product was last offered at the strikethrough price on
09-28-2026

$521.96 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" BBS CC-R Wheels - Set Of Four

19x8.5 ET44 5x112 57.1CB - Satin Graphite Gray with Diamond Cut Spoke Faces and a Polished Outer Lip 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:
BBS - Corporate Logo
ES#:
4753455
Mfg#:
CC2106GRPKKT
Ships on Nov 13, 2026
$3650.99 USD
This product is lifetime replacement eligible Lifetime Replacement

19" BBS CC-R Wheels - Set Of Four

19x8.5 ET40 5x112 57.1CB - Satin Graphite Gray with Diamond Cut Spoke Faces and a Polished Outer Lip 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:
BBS - Corporate Logo
ES#:
4753444
Mfg#:
CC2104GRPKKT
Ships on Nov 13, 2026
$3650.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Rear Upper Shock Strut Spring Mount Brackets - Pair

ES#4709125 - 8d0512341 - Rear Upper Shock Strut Spring Mount Brackets - Pair - Replace your old crusty rear shock mounts with these new units - Bremmen Parts - Audi

Replace your old crusty rear shock mounts with these new units 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#:
4709125
Mfg#:
8D0512341
Back Ordered
ON SALE!
$330.99

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

$304.19 USD
Free Shipping

Camshaft Position Sensor

ES#4057428 - 07L905163C - Camshaft Position Sensor - Located in the cylinder head - Facet - Audi Volkswagen

Located in the cylinder head 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:
Facet - Corporate Logo
ES#:
4057428
Mfg#:
07L905163C
In Stock
$35.99

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

$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump

ES#4376419 - 06E145100R - Vacuum Pump - Generates vacuum when under positive pressure - URO - Audi Volkswagen

Generates vacuum when under positive pressure 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:
URO - Corporate Logo
ES#:
4376419
Mfg#:
06E145100R
In Stock
$134.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

19" RSe104 Wheels - Set Of Four 88.104.07NHSG

ES#4908286 - 88.104.07nhsgKT - 19" RSe104 Wheels - Set Of Four 88.104.07NHSG - 19x8.5 ET45 5x112 57.1CB - Hyper Silver - Neuspeed - Audi Volkswagen

19x8.5 ET45 5x112 57.1CB - Hyper Silver 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:
Neuspeed - Corporate Logo
ES#:
4908286
Mfg#:
88.104.07NHSGKT
Ships in 2 Business Days
$1820.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic / Power Steering Fluid - 1 Liter

ES#3628523 - G0040001LDSP - Hydraulic / Power Steering Fluid - 1 Liter - Don't let your hydraulic system run dry - Genuine Volkswagen Audi - Audi Volkswagen

Don't let your hydraulic system run dry 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#:
3628523
Mfg#:
G0040001LDSP
In Stock
2% off MSRP

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

$31.18

This product was last offered at the strikethrough price on
09-08-2026

$30.53 USD
Free Shipping
on orders $49 and up

Performance Intake System

ES#4835388 - B930TINT - Performance Intake System - maximize your airflow with more power, torque, and incredible induction sounds! - ARM Motorsports - Audi

maximize your airflow with more power, torque, and incredible induction sounds! 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:
ARM Motorsports - Corporate Logo
ES#:
4835388
Mfg#:
B930TINT
In Stock
$227.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust

ES#2093800 - 15599 - Cat-Back Exhaust - 2.25" stainless steel with dual 3.5" polished stainless tips - Magnaflow - Audi

2.25" stainless steel with dual 3.5" polished stainless tips 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:
Magnaflow - Corporate Logo
ES#:
2093800
Mfg#:
15599
Back Ordered
$1813.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8/C7 Center Differential Delete - NO WELDING NEEDED

ES#4375353 - 012535LA01 - B8/C7 Center Differential Delete - NO WELDING NEEDED - Easily allows the removal of center differential when converting your B8 S4 to RWD (rear wheel drive) from Quattro - ECS - Audi

Easily allows the removal of center differential when converting your B8 S4 to RWD (rear wheel drive) from Quattro 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
100% reversible RWD kit when paired with our Axle Delete Plugs (ES4373491) Please make sure via VIN that

Brand:
ECS - Corporate Logo
ES#:
4375353
Mfg#:
012535LA01
In Stock
ON SALE! SAVE 20%
$452.99

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

$362.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

XB LED Projector Fog Lights - S5 Type - Pair

ES#4313748 - LF640 - XB LED Projector Fog Lights - S5 Type - Pair - Plug-and-play design that replaces the original halogen units using factory mounting points - Morimoto - Audi Volkswagen

Plug-and-play design that replaces the original halogen units using factory mounting points 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
Up to the 2012 model year

Brand:
Morimoto - Corporate Logo
ES#:
4313748
Mfg#:
LF640
In Stock
$181.00 USD
Free Shipping
on orders $49 and up

Air Filter

ES#3180947 - 8W0133843 - Air Filter - Keep clean air running through your engine - Genuine Volkswagen Audi - Audi

Keep clean air running through your engine 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#:
3180947
Mfg#:
8W0133843
In Stock
8% off MSRP

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

$42.16

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

$38.88 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Rubber Rear Shock Mount Kit With Installation Hardware

ES#4821196 - 049313LA01KT - Heavy Duty Rubber Rear Shock Mount Kit With Installation Hardware - Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount kit! - ECS - Audi

Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount kit! 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#:
4821196
Mfg#:
049313LA01KT
In Stock
ON SALE! SAVE 19%
$186.62

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

$150.62 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

X34 Carbon Fiber Full Intake System

ES#4005393 - 034-108-1029 - X34 Carbon Fiber Full Intake System - Delivers improved power, sound, and acceleration to B9 Audi S4/S5 owners in a clean OEM+ package! - 034Motorsport - Audi

Delivers improved power, sound, and acceleration to B9 Audi S4/S5 owners in a clean OEM+ package! 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

Brand:
034Motorsport - Corporate Logo
ES#:
4005393
Mfg#:
034-108-1029
Ships in 2 Business Days
$1201.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Genuine Ignition Service Kit

ES#4475302 - 06M905606F5KT - Genuine Ignition Service Kit - Includes six Genuine VW/Audi coil packs and OEM spark plugs to service your ignition system - Genuine Volkswagen Audi - Audi

Includes six Genuine VW/Audi coil packs and OEM spark plugs to service your ignition system 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#:
4475302
Mfg#:
06M905606F5KT
In Stock
$720.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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