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Audi S4 Most Popular Parts

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Cup Kit/Coilover Installation Kit

ES#3663817 - 8k0412377cktKT6 - Cup Kit/Coilover Installation Kit - Includes 034 Density Line Front Upper Strut Mounts, and all necessary items for a quick and easy install. - Assembled By ECS - Audi

Includes 034 Density Line Front Upper Strut Mounts, and all necessary items for a quick and easy install. 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#:
3663817
Mfg#:
8K0412377CKTKT6
Ships on Jul 13, 2026
Auto Notify
ON SALE!
$388.25

This product was last offered at the strikethrough price on
12-17-2025

$379.52 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Tunnel Brace - Black - Audi B8/Porsche Macan

ES#3569140 - 023780ECS01-01 - Billet Tunnel Brace - Black - Audi B8/Porsche Macan - Replace your small and weak stamped brace with heavy-duty billet aluminum! - ECS - Audi Porsche

Replace your small and weak stamped brace with heavy-duty billet aluminum! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
3569140
Mfg#:
023780ECS01-01
In Stock
ON SALE! SAVE 25%
$170.99

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

$128.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Premium Oil Service Kit

ES#3604823 - 107385KT - Premium Oil Service Kit - Includes Motul Specific 508.00/509.00 0W20 oil, Filter, drain plug, and washer for a complete oil service - Assembled By ECS - Audi

Includes Motul Specific 508.00/509.00 0W20 oil, Filter, drain plug, and washer for a complete oil service 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#:
3604823
Mfg#:
107385KT
In Stock
ON SALE!
$157.99

This product was last offered at the strikethrough price on
06-08-2026

$147.89 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

B8 A4/S4/A5/S5 Selector Shaft Monoball

ES#4743351 - 048563LA02 - B8 A4/S4/A5/S5 Selector Shaft Monoball - Eliminate the loose or sloppy feeling from your shifter. - ECS - Audi

Eliminate the loose or sloppy feeling from your shifter. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Manual transmission vehicles only

Brand:
ECS - Corporate Logo
ES#:
4743351
Mfg#:
048563LA02
Ships on Aug 7, 2026
Auto Notify
$156.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3.0 TFSI Supercharger Crank Pulley Upgrade - 190mm

ES#4005438 - 034-145-Z042 - 3.0 TFSI Supercharger Crank Pulley Upgrade - 190mm - Increase supercharger rotational speed to provide more boost to your engine - 034Motorsport - Audi

Increase supercharger rotational speed to provide more boost to your engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*To be used with Stage 2 software - Stage 2+ software necessary if used in conjunction with a supercharger pulley upgrade*

Brand:
034Motorsport - Corporate Logo
ES#:
4005438
Mfg#:
034-145-Z042
Back Ordered
Auto Notify
$502.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear YellowStuff Performance Brake Pad Set

ES#2070875 - DP41988R - Rear YellowStuff Performance Brake Pad Set - EBC's premium sport street pad that offers high friction levels and heat fade resistance - EBC - Audi

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

Brand:
EBC - Corporate Logo
ES#:
2070875
Mfg#:
DP41988R
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.

$179.99

This product was last offered at the strikethrough price on
06-12-2026

$170.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DCT/DSG/PDK Transmission Oil - 1 Liter

ES#2771388 - G052182A2 - DCT/DSG/PDK Transmission Oil - 1 Liter - Transmission fluid for your DCT, DSG, or PDK equipped vehicle - Febi - Audi BMW Volkswagen Porsche

Transmission fluid for your DCT, DSG, or PDK equipped vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2771388
Mfg#:
G052182A2
In Stock
$21.41

This product was last offered at the strikethrough price on
04-20-2026

$19.47 USD
Free Shipping
on orders $49 and up

Bilstein B16 PSS10 Suspension System

ES#3426731 - 48-262316 - Bilstein B16 PSS10 Suspension System - Height adjustable suspension system offering adjustable compression and rebound to dial in for competition, comfort, or anywhere in between. World-famous Bilstein quality with a limited lifetime warranty! - Bilstein - Audi

Height adjustable suspension system offering adjustable compression and rebound to dial in for competition, comfort, or anywhere in between. World-famous Bilstein quality with a limited lifetime warranty! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with build date up to 7/11/16, w/ 53mm front strut body diameter - Vehicles equipped with Electronic

Brand:
Bilstein - Corporate Logo
ES#:
3426731
Mfg#:
48-262316
Ships in 3 Business Days
$2499.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Short Throw Shifter - Audi B6/B7 A4/S4

ES#3023144 - 009198ECS01 - Adjustable Short Throw Shifter - Audi B6/B7 A4/S4 - Find your perfect setting with 3 steps of throw reduction - ECS - Audi

Find your perfect setting with 3 steps of throw reduction affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
3023144
Mfg#:
009198ECS01
In Stock
$393.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Autotech High Volume Fuel Pump Kit

ES#4829926 - 10-127-113K - Autotech High Volume Fuel Pump Kit - EA839 precision-machined internals - Autotech - Audi Porsche

EA839 precision-machined internals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Autotech - Corporate Logo
ES#:
4829926
Mfg#:
10-127-113K
In Stock
$339.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B5 S4 Valved or Non-Valved Cat Back Exhaust

ES#4698873 - 041750LA - B5 S4 Valved or Non-Valved Cat Back Exhaust - Experience your driving passion with our ECS Exhaust System! - ECS - Audi

Experience your driving passion with our ECS Exhaust System! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE
Fits both Sedan and Avant

Brand:
ECS - Corporate Logo
ES#:
4698873
Mfg#:
041750LA
In Stock
ON SALE!
Starting at $498.14 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Billet Oil Cap - EA839

ES#4782771 - 034-110-Z018 - 034Motorsport Billet Oil Cap - EA839 - Transform your engine bay with the beautiful and sexy 034Motorsport Billet Oil Cap. - 034Motorsport - Audi Porsche

Transform your engine bay with the beautiful and sexy 034Motorsport Billet Oil Cap. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4782771
Mfg#:
034-110-Z018
In Stock
$146.00 USD
Free Shipping

B8 A4/S4/A5/S5/RS5 DSG / Automatic - Driveshaft Center Support

ES#4616351 - 012575la03KT - B8 A4/S4/A5/S5/RS5 DSG / Automatic - Driveshaft Center Support - As our beloved B8's age the stock center support bearing starts to wear out causing drivetrain clunk. This upgraded unit keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing - ECS - Audi

As our beloved B8's age the stock center support bearing starts to wear out causing drivetrain clunk. This upgraded unit keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
4616351
Mfg#:
012575LA03KT
In Stock
$308.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Density Line Front Upper Strut Mount - Priced Each

ES#2966732 - 034-601-1003-TD - Density Line Front Upper Strut Mount - Priced Each - Approximately twice as stiff as stock, for increased firmness and vehicle control - 034Motorsport - Audi

Approximately twice as stiff as stock, for increased firmness and vehicle control affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2966732
Mfg#:
034-601-1003-TD
Ships on Jul 13, 2026
Auto Notify
$46.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Density Line Front Lower Control Arm Kit

ES#3199971 - 034-401-1044 - Density Line Front Lower Control Arm Kit - Includes new lower control arms with Density Line control arm bushings, M12 ball joints, and hardware - 034Motorsport - Audi

Includes new lower control arms with Density Line control arm bushings, M12 ball joints, and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits models up to production date 11/2/2009 (M12 Ball Joints)

Brand:
034Motorsport - Corporate Logo
ES#:
3199971
Mfg#:
034-401-1044
Ships in 2 Business Days
$617.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" RSe10 - Set Of Four

ES#2992437 - 88.10.17bKT1 - 18" RSe10 - Set Of Four - 18"x8.5" ET45 5x112 - Satin Black - Neuspeed - Audi Volkswagen

18"x8.5" ET45 5x112 - Satin Black affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Neuspeed - Corporate Logo
ES#:
2992437
Mfg#:
88.10.17BKT1
Ships in 2 Business Days
$1478.99 USD
This product is lifetime replacement eligible Lifetime Replacement

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