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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Most Popular Parts

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Audi B9 S4 Luft-Technik Intercooler and Charge Pipe Kit

ES#3639384 - 023880ecs01akt1 - Audi B9 S4 Luft-Technik Intercooler and Charge Pipe Kit - Full kit to upgrade your charge pipes and front mount intercooler - ECS - Audi

Full kit to upgrade your charge pipes and front mount intercooler

Brand:
ECS - Corporate Logo
ES#:
3639384
Mfg#:
023880ECS01AKT1
In Stock
ON SALE! SAVE 15%
$1019.99

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

$866.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front & Rear Brake Service Kit

ES#4780159 - 4M0615301ANAKT - Front & Rear Brake Service Kit - Featuring Zimmermann rotors and ECS DD23 Ceramic Brake Pads - Includes stainless set screws, brake wear sensors, and silicone brake lubricant. - Assembled By ECS - Audi

Featuring Zimmermann rotors and ECS DD23 Ceramic Brake Pads - Includes stainless set screws, brake wear sensors, and silicone brake lubricant.

Brand:
Assembled By ECS - Corporate Logo
ES#:
4780159
Mfg#:
4M0615301ANAKT
In Stock
ON SALE! SAVE 28%
$871.99

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

$628.80 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance High-Flow Air Intake System - 6" Velocity Stack

ES#4045629 - CTS-IT-290R - Performance High-Flow Air Intake System - 6" Velocity Stack - Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter! - CTS - Audi

Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter!

Brand:
CTS - Corporate Logo
ES#:
4045629
Mfg#:
CTS-IT-290R
In Stock
$299.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front RedStuff Performance Brake Pad Set

ES#4031309 - DP32277C - Front RedStuff Performance Brake Pad Set - High performance street pad featuring Kevlar technology. - EBC - Audi

High performance street pad featuring Kevlar technology.

Brand:
EBC - Corporate Logo
ES#:
4031309
Mfg#:
DP32277C
In Stock
$203.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B9 S4/S5 Downpipe & Resonator Delete Kit

ES#4715650 - 016752la02KT - B9 S4/S5 Downpipe & Resonator Delete Kit - No cutting required, easy-to-install downpipes with resonator deletes for your factory cat back exhaust. - ECS - Audi

No cutting required, easy-to-install downpipes with resonator deletes for your factory cat back exhaust.

Brand:
ECS - Corporate Logo
ES#:
4715650
Mfg#:
016752LA02KT
In Stock
ON SALE!
$479.99

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

$455.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Aluminum Charge Pipe Kit

ES#4685216 - IETPCK6 - Performance Aluminum Charge Pipe Kit - Eliminate factory bottlenecks and weak plastic materials for increased flow and strength. - Integrated Engineering - Audi

Eliminate factory bottlenecks and weak plastic materials for increased flow and strength.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4685216
Mfg#:
IETPCK6
In Stock
$447.99 USD
Free Shipping

Audi B9 S4/A4 Trunk Spoiler - Gloss Black

ES#3981207 - 028801ECS01 - Audi B9 S4/A4 Trunk Spoiler - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi!
Requires removal of the factory trunk spoiler

Brand:
ECS - Corporate Logo
ES#:
3981207
Mfg#:
028801ECS01
In Stock
ON SALE! SAVE 25%
$289.99

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

$217.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Synthoil Premium Engine Oil (5w-40) - 5 Liter

ES#258725 - 2041 - Synthoil Premium Engine Oil (5w-40) - 5 Liter - A fully synthetic oil specifically designed around the unique needs and long drain intervals of European engines - Liqui-Moly - Audi BMW Volkswagen

A fully synthetic oil specifically designed around the unique needs and long drain intervals of European engines We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
258725
Mfg#:
2041
In Stock
37% off MSRP

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

$94.99

This product was last offered at the strikethrough price on
08-23-2026

$59.59 USD
Free Shipping
on orders $49 and up

Audi B9 A4 / S4 Flat Side Skirts - Gloss Black

ES#4163869 - 001734la01 - Audi B9 A4 / S4 Flat Side Skirts - Gloss Black - Enhance your side profile with an aggressive look! - ECS - Audi

Enhance your side profile with an aggressive look!

Brand:
ECS - Corporate Logo
ES#:
4163869
Mfg#:
001734LA01
Ships in 1 Business Day
ON SALE! SAVE 20%
$363.99

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

$291.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

FDS Front-Mount Intercooler Kit - Silver

ES#3470702 - IETPCK1 - FDS Front-Mount Intercooler Kit - Silver - Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods! - Integrated Engineering - Audi

Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3470702
Mfg#:
IETPCK1
Ships in 4 Business Days
$1034.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 20mm With Black Ball Seat Bolts

ES#2748291 - 6-ECS-024 - Wheel Spacer & Bolt Kit - 20mm With Black Ball Seat Bolts - Add some style to your Audi with these wheel spacers - ECS - Audi

Add some style to your Audi with these wheel spacers Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748291
Mfg#:
6-ECS-024
Ships in 1-2 days
ON SALE! SAVE 20%
$187.99

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

$149.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EA839 High Pressure Fuel Pump Piston Upgrade Kit

ES#4623625 - 034-106-6054 - EA839 High Pressure Fuel Pump Piston Upgrade Kit - Unlock up to 37% more flow over the factory high pressure fuel pump! - 034Motorsport - Audi Porsche

Unlock up to 37% more flow over the factory high pressure fuel pump!

Brand:
034Motorsport - Corporate Logo
ES#:
4623625
Mfg#:
034-106-6054
Ships on Oct 12, 2026
Auto Notify
ON SALE! SAVE 10%
$396.00

This product was last offered at the strikethrough price on
08-17-2026

$356.40 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front & Rear Brake Pad Kit - EBC RedStuff

ES#4031339 - dp32254cKT - Front & Rear Brake Pad Kit - EBC RedStuff - High performance street pad featuring Kevlar technology. - EBC - Audi

High performance street pad featuring Kevlar technology.

Brand:
EBC - Corporate Logo
ES#:
4031339
Mfg#:
DP32254CKT
In Stock
$348.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Density Line Motor Mount Kit - 50 Durometer

ES#4491679 - 034-509-5036 - Street Density Line Motor Mount Kit - 50 Durometer - Void-free and fluid-free, eliminating the slop associated with the factory mounts - 034Motorsport - Audi

Void-free and fluid-free, eliminating the slop associated with the factory mounts

Brand:
034Motorsport - Corporate Logo
ES#:
4491679
Mfg#:
034-509-5036
In Stock
ON SALE! SAVE 10%
$449.00

This product was last offered at the strikethrough price on
08-17-2026

$404.10 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 10mm With Black Ball Seat Bolts

ES#2748282 - 002411ECS02AKT5 - Wheel Spacer & Bolt Kit - 10mm With Black Ball Seat Bolts - Complete kit for two wheels, includes everything you need to install spacers - ECS - Audi

Complete kit for two wheels, includes everything you need to install spacers Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748282
Mfg#:
002411ECS02AKT5
In Stock
ON SALE! SAVE 15%
$173.99

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

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

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