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Audi S4 Most Popular Parts

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Power Stop Z26 Street Warrior Front & Rear Brake Kit (345mm/330mm)

ES#3990097 - K6141-26 - Power Stop Z26 Street Warrior Front & Rear Brake Kit (345mm/330mm) - A complete 4-wheel performance brake upgrade featuring drilled & slotted rotors and high-performance carbon-fiber ceramic pads. - Power Stop - Audi

A complete 4-wheel performance brake upgrade featuring drilled & slotted rotors and high-performance carbon-fiber ceramic pads. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Models with 345mm Front & 330mm Rear Rotors

Brand:
Power Stop - Corporate Logo
ES#:
3990097
Mfg#:
K6141-26
Ships in 2 Business Days
$695.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Upper Timing Chain Tensioner - Left

ES#3614027 - 06E109217AM - Upper Timing Chain Tensioner - Left - Applies tension to the upper left timing chain - Genuine Volkswagen Audi - Audi

Applies tension to the upper left timing chain affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3614027
Mfg#:
06E109217AM
In Stock
30% off MSRP

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

$206.99

This product was last offered at the strikethrough price on
02-23-2026

$144.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Complete Fuel Injector Installation Kit

ES#3613678 - 06e998907eKT - Complete Fuel Injector Installation Kit - Includes o-rings, insert, and retaining clip to service one fuel injector - Order qty 6 to service all fuel injectors - Genuine Volkswagen Audi - Audi

Includes o-rings, insert, and retaining clip to service one fuel injector - Order qty 6 to service all fuel injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3613678
Mfg#:
06E998907EKT
In Stock
$78.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Metal Extended Slave Cylinder Kit

ES#4508665 - 8k0721257eKT - Adjustable Metal Extended Slave Cylinder Kit - Improve clutch pedal feel and the push clutch to start issue all at once! - Assembled By ECS - Audi

Improve clutch pedal feel and the push clutch to start issue all at once! 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#:
4508665
Mfg#:
8K0721257EKT
In Stock
$329.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Upgraded Ignition Coil - Grey - Priced Each

ES#4164358 - MS100203 - APR Upgraded Ignition Coil - Grey - Priced Each - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - APR - Audi Volkswagen Porsche

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
CARB certified for sale in all 50 states

Brand:
APR - Corporate Logo
ES#:
4164358
Mfg#:
MS100203
EO#:
D-783-5
In Stock
12% off MSRP

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

$57.95

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

$51.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Service Kit - Premium

ES#3125751 - 06E115562AKT1 - Oil Service Kit - Premium - Includes Hengst oil filter, drain plug/washer, and 7 liters of Motul 5w-40 oil - Assembled By ECS - Audi

Includes Hengst oil filter, drain plug/washer, and 7 liters of Motul 5w-40 oil 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#:
3125751
Mfg#:
06E115562AKT1
In Stock
ON SALE!
$104.99

This product was last offered at the strikethrough price on
05-29-2026

$104.67 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

3.0T Billet Aluminum Thermostat - 70°C

ES#4876047 - 053120LA03 - 3.0T Billet Aluminum Thermostat - 70C - Ditch your failure-prone OE plastic thermostat with a high-performance, billet aluminum alternative! - ECS - Audi Volkswagen

Ditch your failure-prone OE plastic thermostat with a high-performance, billet aluminum alternative! 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#:
4876047
Mfg#:
053120LA03
In Stock
$405.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front BlueStuff Performance Brake Pads

ES#4031310 - DP52277NDX - Front BlueStuff Performance Brake Pads - Race inspired performance, NDX formula provides a great initial bite - EBC - Audi

Race inspired performance, NDX formula provides a great initial bite affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
EBC - Corporate Logo
ES#:
4031310
Mfg#:
DP52277NDX
In Stock
$237.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Complete Mechatronics Unit Service Kit

ES#3695397 - 8K2927156MKT - Complete Mechatronics Unit Service Kit - Fundamental components for a complete DSG mechatronics unit printed circuit foil repair - Assembled By ECS - Audi

Fundamental components for a complete DSG mechatronics unit printed circuit foil repair affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For models with NSC transmission code - Please contact with VIN to verify fitment

Brand:
Assembled By ECS - Corporate Logo
ES#:
3695397
Mfg#:
8K2927156MKT
Ships on Sep 24, 2026
Auto Notify
ON SALE!
$7515.99

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

$6879.92 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

19" Style 628 Wheels - Set Of Four

ES#2724026 - 628-9kt1 - 19" Style 628 Wheels - Set Of Four - 19x8.5 ET35 5x112 57.1CB - Gloss Gunmetal/Machined Face - Alzor - Audi Volkswagen

19x8.5 ET35 5x112 57.1CB - Gloss Gunmetal/Machined Face affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
2724026
Mfg#:
628-9KT1
In Stock
ON SALE! SAVE 25%
$1310.00

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

$982.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front 2-Piece Tru-Float Scalloped Brake Rotors - Pair (345x30)

ES#2681113 - 003523ECS01A01KT - Front 2-Piece Tru-Float Scalloped Brake Rotors - Pair (345x30) - Direct bolt-on replacement - 27% less weight! - ECS - Audi Porsche

Direct bolt-on replacement - 27% less weight! 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#:
2681113
Mfg#:
003523ECS01A01KT
In Stock
$1145.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

20" RS5 Y-Spoke Wheel - Priced Each

ES#2589866 - 8T0601025CQ - 20" RS5 Y-Spoke Wheel - Priced Each - 20"x9" ET26 5x112 Titanium/Aluminum face - Genuine Volkswagen Audi - Audi

20"x9" ET26 5x112 Titanium/Aluminum face affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Aggressive fitting wheels. May require fender modification and selective tire sizing

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2589866
Mfg#:
8T0601025CQ
Ships on Jul 9, 2026
4% off MSRP

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

$1788.56

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

$1717.46 USD
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Rear Subframe Mount Insert Kit

ES#3247809 - 034-601-0046 - Billet Aluminum Rear Subframe Mount Insert Kit - Maintain proper suspension geometry when cornering and reduce rear subframe movement - 034Motorsport - Audi

Maintain proper suspension geometry when cornering and reduce rear subframe movement affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3247809
Mfg#:
034-601-0046
In Stock
$208.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Solid Rear Sway Bar - 25.4mm

ES#2864584 - 034-402-1001 - Solid Rear Sway Bar - 25.4mm - Substantially reduce understeer and body roll - 034Motorsport - Audi

Substantially reduce understeer and body roll affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Billet Aluminum Rear Subframe Reinforcement kit is recommended

Brand:
034Motorsport - Corporate Logo
ES#:
2864584
Mfg#:
034-402-1001
In Stock
$361.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Slave Cylinder

ES#4941212 - SC-02029 - Billet Slave Cylinder - Upgrade and Restore the feel of your clutch - Clutch Masters - Audi

Upgrade and Restore the feel of your clutch affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From VIN 8E-4-270001, split is in the 2004 model year

Brand:
Clutch Masters - Corporate Logo
ES#:
4941212
Mfg#:
SC-02029
In Stock
15% off MSRP

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

$335.00

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

$284.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B7 A4 S-Line / S4 Trunk Spoiler - Gloss Black

ES#4039668 - 001215LA01 - Audi B7 A4 S-Line / S4 Trunk Spoiler - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 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 Sedan models only

Brand:
ECS - Corporate Logo
ES#:
4039668
Mfg#:
001215LA01
In Stock
ON SALE! SAVE 23%
$222.99

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

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

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