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Audi S4 Most Popular Parts

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Special Active Front Strut - Priced Each

ES#3560616 - 82451264 - Special Active Front Strut - Priced Each - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality Vehicles equipped with Electronic Damping Control (EDC) will lose factory shock damping and receive a system error code

Brand:
Koni - Corporate Logo
ES#:
3560616
Mfg#:
82451264
In Stock
38% off MSRP

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

$329.45

This product was last offered at the strikethrough price on
10-23-2026

$202.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Transmission Mount Insert

ES#2864605 - 034-509-4014 - Transmission Mount Insert - This billet aluminum insert is designed to fill the large void in the factory transmission mount - 034Motorsport - Audi Porsche

This billet aluminum insert is designed to fill the large void in the factory transmission mount 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2864605
Mfg#:
034-509-4014
In Stock
$89.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" A01 Flow Formed Wheels - Set Of Four

ES#4045233 - whl00017KT - 18" A01 Flow Formed Wheels - Set Of Four - 18"x8.5", ET45, 5x112, 18.5lbs - Satin Black Finish - APR - Audi Volkswagen MINI

18"x8.5", ET45, 5x112, 18.5lbs - Satin Black Finish Call In Or Chat For Best Price!

Wheel spacers may be necessary to clear brake calipers

Brand:
APR - Corporate Logo
ES#:
4045233
Mfg#:
WHL00017KT
In Stock
ON SALE! SAVE 10%
$1479.80

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

$1331.82 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Service Kit

ES#4620164 - g055190a2KT - Rear Differential Service Kit - Complete kit with Genuine fluids and drain plugs to service your rear differential - Genuine Volkswagen Audi - Audi

Complete kit with Genuine fluids and drain plugs to service your rear differential

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4620164
Mfg#:
G055190A2KT
Ships in 8 Business Days
$104.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

IE Audi 3.0T Crank Pulley Upgrade Kit - 207mm

ES#4491708 - IEBAVJ6 - IE Audi 3.0T Crank Pulley Upgrade Kit - 207mm - Increases boost for "dual pulley" tune power levels without replacing the press-on supercharger pulley for an easier install. - Integrated Engineering - Audi

Increases boost for "dual pulley" tune power levels without replacing the press-on supercharger pulley for an easier install. Requires stage 2 dual pulley ECU tune

Brand:
Integrated Engineering - Corporate Logo
ES#:
4491708
Mfg#:
IEBAVJ6
In Stock
$497.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

HID Headlight Ballast - Priced Each

ES#3437295 - 8K0941597E - HID Headlight Ballast - Priced Each - Replace your failed ballast and get your xenon headlights in working order again. - Hella - Audi Volkswagen

Replace your failed ballast and get your xenon headlights in working order again.

Brand:
Hella - Corporate Logo
ES#:
3437295
Mfg#:
8K0941597E
In Stock
$220.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

TTE710 Turbo Upgrade - B9 S4/S5/SQ5 3.0T

ES#4493300 - TTE10388 - TTE710 Turbo Upgrade - B9 S4/S5/SQ5 3.0T - Pair this with the Integrated Engineering or 034 Motorsports Stage 3 tune for 600+hp! - The Turbo Engineers - Audi

Pair this with the Integrated Engineering or 034 Motorsports Stage 3 tune for 600+hp! Custom tuning software required for installation.

Brand:
The Turbo Engineers - Corporate Logo
ES#:
4493300
Mfg#:
TTE10388
In Stock
$7890.99

This product was last offered at the strikethrough price on
08-31-2026

$5945.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Multi DCTF (Dual Clutch Transmission Fluid) - 1 Liter

ES#4370399 - 109464 - Multi DCTF (Dual Clutch Transmission Fluid) - 1 Liter - Transmission fluid for your DSG or PDK equipped vehicle - Motul - Audi Volkswagen Mercedes Benz Porsche

Transmission fluid for your DSG or PDK equipped vehicle

Brand:
Motul - Corporate Logo
ES#:
4370399
Mfg#:
109464
In Stock
10% off MSRP

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

$25.62

This product was last offered at the strikethrough price on
10-13-2026

$23.06 USD
Free Shipping
on orders $49 and up

Charcoal Lined Cabin Filter / Fresh Air Filter

ES#3202691 - 8K0819439B - Charcoal Lined Cabin Filter / Fresh Air Filter - The activated charcoal filters odor from reaching the cabin - Hengst - Audi Porsche
ECS Tuning recommends this product.

The activated charcoal filters odor from reaching the cabin 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat! Hengst is our preferred OEM filtration supplier!

Brand:
Hengst - Corporate Logo
ES#:
3202691
Mfg#:
8K0819439B
In Stock
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Iridium BKR9EIX Spark Plug - Priced Each

ES#2575952 - BKR9EIX - Iridium BKR9EIX Spark Plug - Priced Each - The NGK Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling properties. - NGK - Audi

The NGK Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling properties. We Price Match - Give Us A Call or Chat!
Recommended to be used by various tuners when paired with performance software - recommended gap of .024” +/- .002”

Brand:
NGK - Corporate Logo
ES#:
2575952
Mfg#:
BKR9EIX
In Stock
$15.13

This product was last offered at the strikethrough price on
09-15-2026

$9.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel Brake Rotor Set Screw - Priced Each

ES#257461 - 92010A426 - Stainless Steel Brake Rotor Set Screw - Priced Each - Holds brake rotor to hub when wheel is removed (M6x16). 18-8 stainless material provides added protection against oxidation and corrosion. - ECS - Audi Volkswagen Porsche

Holds brake rotor to hub when wheel is removed (M6x16). 18-8 stainless material provides added protection against oxidation and corrosion. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
257461
Mfg#:
92010A426
In Stock
ON SALE! SAVE 25%
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet X-Brace - Black - Audi B8.5/Porsche Macan

ES#4220368 - 004802la01aKT - Billet X-Brace - Black - Audi B8.5/Porsche Macan - Improve steering feel and handling! - ECS - Audi Porsche

Improve steering feel and handling! 10X Entries Into Our F80 M3 Sweepstakes

Fits Facelift models from the 2013 model year.

Brand:
ECS - Corporate Logo
ES#:
4220368
Mfg#:
004802LA01AKT
Ships on Nov 30, 2026
ON SALE! SAVE 25%
$560.99

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

$420.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

D2S 6000K XB 35W HID Bulbs - Pair

ES#4212766 - MM.N.065 - D2S 6000K XB 35W HID Bulbs - Pair - Quality replacement xenon bulbs from Morimoto - Morimoto - Audi BMW Volkswagen Mercedes Benz MINI

Quality replacement xenon bulbs from Morimoto

Brand:
Morimoto - Corporate Logo
ES#:
4212766
Mfg#:
MM.N.065
In Stock
6% off MSRP

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

$69.00

This product was last offered at the strikethrough price on
10-23-2026

$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heavy-Duty Outer Tie Rod End - Pair

ES#3199969 - 034-406-2026 - Heavy-Duty Outer Tie Rod End - Pair - Feature all-metal construction with a heavy-duty ball and socket assembly - 034Motorsport - Audi

Feature all-metal construction with a heavy-duty ball and socket assembly 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3199969
Mfg#:
034-406-2026
In Stock
$138.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Style M205 Wheels - Set Of Four

ES#4316106 - m205-1KT - 19" Style M205 Wheels - Set Of Four - 19"x8.5" ET35 66.6CB 5x112 - Hyper Silver - Alzor - Audi MINI

19"x8.5" ET35 66.6CB 5x112 - Hyper Silver 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Alzor - Corporate Logo
ES#:
4316106
Mfg#:
M205-1KT
In Stock
ON SALE! SAVE 25%
$1300.00

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

$975.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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