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Audi S4 Most Popular Parts

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ECS Wheel Spacers - 10mm (Pair)

ES#2603071 - 002411ECS02A10KT - ECS Wheel Spacers - 10mm (Pair) - Improve the look of your vehicle with spacers - ECS - Audi BMW Porsche

Improve the look of your vehicle with spacers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
These spacers are measured and designed to fit factory wheels. Not all aftermarket wheels will work with

Brand:
ECS - Corporate Logo
ES#:
2603071
Mfg#:
002411ECS02A10KT
In Stock
ON SALE!
$104.99

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

$99.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Front Control Arm Kit

ES#2535202 - 8D0498998 - Complete Front Control Arm Kit - Includes all front control arms, tie rod ends, sway bar end links & hardware - URO - Audi Volkswagen

Includes all front control arms, tie rod ends, sway bar end links & hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Fits from From Chassis/VIN #8D-Y-080001, split is in model year 2000

Brand:
URO - Corporate Logo
ES#:
2535202
Mfg#:
8D0498998
In Stock
$283.87 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Dipstick

ES#4424527 - 06E115611H - Engine Oil Dipstick - Add the capability to check your oil - URO - Audi

Add the capability to check your oil affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Up to the 2012 model year

Brand:
URO - Corporate Logo
ES#:
4424527
Mfg#:
06E115611H
In Stock
$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Titanium Ball Seat Wheel Bolt - 14x1.5x27mm - Set Of 20

ES#3570214 - 025384ecs02-0120 - Titanium Ball Seat Wheel Bolt - 14x1.5x27mm - Set Of 20 - Lightweight, corrosion resistant, high performance lug bolts - ECS - Audi Volkswagen

Lightweight, corrosion resistant, high performance lug bolts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Stock length bolts for use without spacers.

Brand:
ECS - Corporate Logo
ES#:
3570214
Mfg#:
025384ECS02-0120
In Stock
ON SALE!
$271.99

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

$258.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dynamic+ Billet Adjustable Rear Sway Bar End Links

ES#4013533 - 034-402-4029 - Dynamic+ Billet Adjustable Rear Sway Bar End Links - Replace your flimsy, imprecise OEM sway bar end links - Designed to improve handling, road feel, and steering response! - 034Motorsport - Audi

Replace your flimsy, imprecise OEM sway bar end links - Designed to improve handling, road feel, and steering response! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4013533
Mfg#:
034-402-4029
In Stock
$231.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

KW V1 Series Coilover Kit

ES#2091966 - 10210075 - KW V1 Series Coilover Kit - Variant 1 coilovers offer the best balance between sporty driving and comfort - KW Suspension - Audi

Variant 1 coilovers offer the best balance between sporty driving and comfort affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits sedan models without factory EDC. Range of lowering is 0.8-1.5" in the front and 0.4-1.5" in the rear.

Brand:
KW Suspension - Corporate Logo
ES#:
2091966
Mfg#:
10210075
In Stock at Vendor
$2194.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Style 370 Wheels - Set Of Four

ES#4629995 - 370-2KT - 19" Style 370 Wheels - Set Of Four - 19"x8.5" ET35 66.6CB 5x112 - Gloss Gunmetal - Alzor - Audi BMW MINI

19"x8.5" ET35 66.6CB 5x112 - Gloss Gunmetal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
4629995
Mfg#:
370-2KT
In Stock
ON SALE! SAVE 56%
$1327.99

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

$585.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Flywheel Bolt - Set of 8

ES#2592573 - N90665001 - Flywheel Bolt - Set of 8 - Secures the flywheel to crankshaft. M10X1X22.3 - Vaico - Audi Volkswagen

Secures the flywheel to crankshaft. M10X1X22.3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2592573
Mfg#:
N90665001
In Stock
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Kit

ES#4418372 - 06E121018BKT - Water Pump Kit - Includes a new HD water pump and thermostat - Assembled By ECS - Audi

Includes a new HD water pump and thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits up to the 2012 model year (pre-facelift)

Brand:
Assembled By ECS - Corporate Logo
ES#:
4418372
Mfg#:
06E121018BKT
Ships in 4 Business Days
ON SALE!
$219.99

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

$203.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Audi B9 Carbon Fiber Engine Cover Overlay Kit

ES#3969803 - 023897ECS02 - Audi B9 Carbon Fiber Engine Cover Overlay Kit - Add a touch of carbon fiber to your stock engine cover! - ECS - Audi

Add a touch of carbon fiber to your stock engine cover! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3969803
Mfg#:
023897ECS02
In Stock
ON SALE! SAVE 10%
$359.99

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

$323.51 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

APR Front Mount Intercooler System - B9 S4/S5 3.0T

ES#3613172 - IC100023 - APR Front Mount Intercooler System - B9 S4/S5 3.0T - Massive front mounted upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance! - APR - Audi

Massive front mounted upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance! 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!

Brand:
APR - Corporate Logo
ES#:
3613172
Mfg#:
IC100023
Back Ordered
11% off MSRP

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

$1631.99

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

$1449.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VWR Stud & Nut Conversion Kit - R13 Ball Seat - 70mm Studs

ES#3570417 - VWR630000 - VWR Stud & Nut Conversion Kit - R13 Ball Seat - 70mm Studs - Replace those fussy bolts with Racingline's high tensile stud & lightweight nut conversion - Racingline - Audi Volkswagen

Replace those fussy bolts with Racingline's high tensile stud & lightweight nut conversion affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racingline - Corporate Logo
ES#:
3570417
Mfg#:
VWR630000
Back Ordered
Auto Notify
$206.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silicone Breather Hose Kit

ES#2893863 - 034-101-3071 - Silicone Breather Hose Kit - Designed to replace the problematic factory "spider" breather hose assembly - 034Motorsport - Audi

Designed to replace the problematic factory "spider" breather hose assembly affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This kit will not fit vehicles equipped with factory SAI.

Brand:
034Motorsport - Corporate Logo
ES#:
2893863
Mfg#:
034-101-3071
In Stock
$334.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Supercharger Belt

ES#4043249 - 7PK1310ECS - Performance Kevlar Reinforced Supercharger Belt - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - Audi
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For use with 187.3mm crank pulley & OEM supercharger pulley only

Brand:
ECS - Corporate Logo
ES#:
4043249
Mfg#:
7PK1310ECS
Ships in 1 Business Day
$58.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silver Racing 2MOER10S Spark Plugs - Set Of Six

ES#4715010 - 2m0er10sKT - Silver Racing 2MOER10S Spark Plugs - Set Of Six - Featuring silver fine wire center electrode - Superior ignition ability increases engine power! - Brisk - Audi

Featuring silver fine wire center electrode - Superior ignition ability increases engine power! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
One heat range colder than NGK 97506 SILZKBR8D8S

Brand:
Brisk - Corporate Logo
ES#:
4715010
Mfg#:
2M0ER10SKT
In Stock
$92.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lightweight 9lb Aluminum Flywheel

ES#2570131 - SA26A - Lightweight 9lb Aluminum Flywheel - Unleash hidden power by reducing rotating mass - Spec Clutches - Audi

Unleash hidden power by reducing rotating mass affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
To be used with a Spec clutch kit

Brand:
Spec Clutches - Corporate Logo
ES#:
2570131
Mfg#:
SA26A
Ships in 8 Business Days
10% off MSRP

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

$799.00

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

$719.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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Manufacturer names and/or part numbers are used only for identification purposes.

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