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Audi S4 Most Popular Parts

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B9 S4/S5 Cat-Back Exhaust System - Non-Resonated (Louder)

ES#3466846 - SSXAU701 - B9 S4/S5 Cat-Back Exhaust System - Non-Resonated (Louder) - 2.50" stainless steel with quad GT-100 cerakote black tips - Milltek Sport - Audi

2.50" stainless steel with quad GT-100 cerakote black tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits models with factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3466846
Mfg#:
SSXAU701
Ships in 3 Business Days
$3507.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" Style 349 Wheels - Set Of Four

ES#2713035 - 349A-8 - 18" Style 349 Wheels - Set Of Four - 18"x8" ET35 CB66.6 5x112 Matte Black - Alzor - Audi MINI

18"x8" ET35 CB66.6 5x112 Matte Black affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
2713035
Mfg#:
349A-8
In Stock
ON SALE! SAVE 25%
$1166.99

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

$875.01 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" Style 628 Wheels - Set Of Four

ES#2719098 - 628-4kt1 - 18" Style 628 Wheels - Set Of Four - 18"x8" ET45 66.6CB 5x112 Gloss Black/ Machined Face - Alzor - Audi

18"x8" ET45 66.6CB 5x112 Gloss Black/ Machined Face affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Wheel spacers may be necessary for front caliper clearance

Brand:
Alzor - Corporate Logo
ES#:
2719098
Mfg#:
628-4KT1
In Stock
ON SALE! SAVE 43%
$1227.99

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

$699.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear 2-Piece Scalloped Brake Rotors - Pair (330x22)

ES#3520785 - 023950ecs01KT - Rear 2-Piece Scalloped Brake Rotors - Pair (330x22) - Direct bolt-on upgrade to Tru-Float scalloped style rotors. 20% less weight! - ECS - Audi

Direct bolt-on upgrade to Tru-Float scalloped style rotors. 20% less weight! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3520785
Mfg#:
023950ECS01KT
In Stock
ON SALE! SAVE 32%
$1021.99

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

$699.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Black Optics Package Window Trim Kit

Consists of all the glossy black exterior window trim pieces that make up the 'Black Optics' package affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with existing glossy black rear window corner trim

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3551199
Mfg#:
8K5853703HKT1
Ships on Jul 7, 2026
$3499.86 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Turbo Systems B9 S4/S5 3.0T Stage 2 Hybrid Turbocharger (650+ HP)

The Turbo Systems hybrid turbocharger is an original turbocharger that has been reworked to suit larger compressor and turbine wheels, along with a ball bearing cartridge. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Emmanuele Design - Corporate Logo
ES#:
4415834
Mfg#:
TSH55TFSI-STG2
Ships in 1 Business Day
$3499.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Driveshaft Support Center Bearing

ES#2864593 - 034-506-0002 - Driveshaft Support Center Bearing - Finally a solution to replacing the entire driveshaft - 034Motorsport - Audi

Finally a solution to replacing the entire driveshaft affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2864593
Mfg#:
034-506-0002
In Stock
$76.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Inconel Exhaust Valve - 1.8T/2.7T - Priced Each

ES#3647472 - ST-AEVI-1103 - Supertech Inconel Exhaust Valve - 1.8T/2.7T - Priced Each - Standard sized valve head diameter, factory triple groove keeper setup - Supertech - Audi Volkswagen

Standard sized valve head diameter, factory triple groove keeper setup affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*Valves priced individually - For 1.8T - qty 8 needed / For 2.7T - qty 12 needed - Please see long description for additional valve seal/keeper informati

Brand:
Supertech - Corporate Logo
ES#:
3647472
Mfg#:
ST-AEVI-1103
In Stock
$44.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Dipstick

ES#280765 - 06E115611H - Engine Oil Dipstick - Add the capability to check your oil - Genuine Volkswagen Audi - Audi

Add the capability to check your oil affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280765
Mfg#:
06E115611H
In Stock
18% off MSRP

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

$75.00

This product was last offered at the strikethrough price on
06-16-2026

$61.13 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Lash Adjuster - Priced Each

ES#4340784 - 06M109423A - Hydraulic Lash Adjuster - Priced Each - Also called the Cam Follower or Valve lifter - Genuine Volkswagen Audi - Audi

Also called the Cam Follower or Valve lifter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4340784
Mfg#:
06M109423A
Ships in 1-2 days
2% off MSRP

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

$58.99

This product was last offered at the strikethrough price on
06-16-2026

$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

19" APEX ML-10RT Forged Wheels - Set Of Four

ES#4821479 - ml1019942112gKT - 19" APEX ML-10RT Forged Wheels - Set Of Four - 19x9 ET42 5x112 57.1CB - Machined Lip Gloss Motorsport Gold - APEX Wheels - Audi Volkswagen

19x9 ET42 5x112 57.1CB - Machined Lip Gloss Motorsport Gold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
APEX Wheels - Corporate Logo
ES#:
4821479
Mfg#:
ML1019942112GKT
Ships in 5 Business Days
$3476.00 USD
Free Shipping

Front YellowStuff Performance Brake Pad Set

ES#520863 - DP41473R - Front YellowStuff Performance Brake Pad Set - EBC's premium sport street pad that offers high friction levels and heat fade resistance - EBC - Audi Volkswagen Porsche

EBC's premium sport street pad that offers high friction levels and heat fade resistance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For use with the Stage 4 Big Brake Kit

Brand:
EBC - Corporate Logo
ES#:
520863
Mfg#:
DP41473R
In Stock
5% off MSRP

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

$332.99

This product was last offered at the strikethrough price on
06-16-2026

$315.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cup Kit - H&R OE Sport Springs With Bilstein Sport Shocks

ES#3010022 - 50361-55kt - Cup Kit - H&R OE Sport Springs With Bilstein Sport Shocks - Perfect combination of handling & ride quality - Assembled By ECS - Audi

Perfect combination of handling & ride quality 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#:
3010022
Mfg#:
50361-55KT
Ships on Sep 18, 2026
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$1353.99

This product was last offered at the strikethrough price on
05-22-2026

$1157.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" APEX SM-10 Wheels - Set of Four

ES#4370233 - sm10189et42KT - 18" APEX SM-10 Wheels - Set of Four - 18x9 ET42 5x112 57.1CB - Anthracite - APEX Wheels - Audi Volkswagen

18x9 ET42 5x112 57.1CB - Anthracite affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
APEX Wheels - Corporate Logo
ES#:
4370233
Mfg#:
SM10189ET42KT
Back Ordered
$1736.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS 18Z 6-Piston Performance Brake Caliper - Pair

ES#4845288 - 056430LA01 - ECS 18Z 6-Piston Performance Brake Caliper - Pair - Enhance braking performance & complete your big brake kit! Direct replacement for OEM Porsche 18Z (95535142122, 95535142222). - ECS - Audi Volkswagen Porsche

Enhance braking performance & complete your big brake kit! Direct replacement for OEM Porsche 18Z (95535142122, 95535142222). affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles Equipped with ECS Stage 5 Front Big Brake Kit (ES#1896)

Brand:
ECS - Corporate Logo
ES#:
4845288
Mfg#:
056430LA01
In Stock
ON SALE! SAVE 20%
$866.99

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

$693.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Might-As-Well-Be-Gated Kit W/Short Shift Clamp

ES#4419869 - B8029A2 - Might-As-Well-Be-Gated Kit W/Short Shift Clamp - This combo all but eliminates shifter slop and flex under load. - JXB Performance - Audi

This combo all but eliminates shifter slop and flex under load. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JXB Performance - Corporate Logo
ES#:
4419869
Mfg#:
B8029A2
In Stock
$494.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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