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Your Vehicle Audi A3 8V Quattro 2.0T

Top Mods for your Audi B9 S4 3.0T

ECS loves helping you make your car all it can be; that's why we've put all the top-of-the-line performance parts for your AUDI B9 S4 together in one place. This list, compiled by our own AUDI gurus, is everything you need to outfit your car with all those goodies you've wanted for your build. Let's make race season even more fun with all the best performance parts for your Audi B9 S4!


Hand Selected By Our Team Of Enthusiast

For Your
Audi B9 S4 3.0T

B9 A4/A5/S4/S5 Quattro Adjustable Damping Coilovers
Features 32 way adjustable damping, variable length and zinc-coated shock bodies
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Models with Dynamic Chassis Control (DCC) will require DCC Cancelers
Brand: ECS - Corporate Logo
ES#: 4474122
Mfg#: 000745LA01

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Availability:
In Stock
On SALE Save 35%
$1154.99

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

$749.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Dynamic+ Lowering Springs
Engineered to improve handling and deliver superb ride quality!
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Brand: 034Motorsport - Corporate Logo
ES#: 3491530
Mfg#: 034-404-1005

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Availability:
In Stock
$345.00 USD
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Sport Springs - Set
Finally, A performance lowering spring for your B9 chassis Audi - Offering unrivaled comfort and performance
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We Price Match - Give Us A Call or Chat!
Brand: H&R - Corporate Logo
ES#: 3187941
Mfg#: 50357

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Availability:
In Stock
$286.99 USD
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Dynamic+ Adjustable Rear Sway Bar
Designed to combat understeer while reducing body roll under hard cornering!
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Brand: 034Motorsport - Corporate Logo
ES#: 3241098
Mfg#: 034-402-1010

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In Stock
$354.00 USD
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Audi B9 S4/S5 3.0T Luft-Technik Intake System
Enhance your engine's performance with gains up to 16 Wheel Horsepower and 15 foot pounds of torque with our ECS Cold Air Intake
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Brand: ECS - Corporate Logo
ES#: 3477816
Mfg#: 023795ECS06

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Availability:
In Stock
On SALE Save 19%
$529.99

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

$429.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Audi B9 S4/S5 3.0T Kohlefaser Luft-Technik Intake System
Enhance your engine's performance with gains up to 16 Wheel Horsepower and 15 foot pounds of torque with our ECS Carbon Fiber Cold Air Intake
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Brand: ECS - Corporate Logo
ES#: 3545247
Mfg#: 023796ECS04

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Availability:
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$978.86

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

$832.03 USD
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B9/B9.5 S4 & S5 3.0T IE Carbon Fiber Intake System
One-Piece carbon fiber construction that adds up to +16HP/TQ
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Brand: Integrated Engineering - Corporate Logo
ES#: 4346278
Mfg#: IEINCK3

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Availability:
In Stock
$1091.99 USD
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P34 Cold Air Intake
034Motorsport's P34 Cold Air Intake System delivers improved power, sound, and acceleration
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Brand: 034Motorsport - Corporate Logo
ES#: 4381931
Mfg#: 034-108-1028

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$556.00 USD
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Audi B9 S4/S5/SQ5 3.0T Big Bore Cast Aluminum Turbo Inlet Pipe
Remove the plastic and reduce restriction at your turbo
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Brand: ECS - Corporate Logo
ES#: 3647752
Mfg#: 027714ECS01

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Availability:
In Stock
On SALE Save 27%
$193.99

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

$141.99 USD
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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!
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Brand: APR - Corporate Logo
ES#: 3613172
Mfg#: IC100023

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Availability:
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
$1449.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Audi B9 S4 Luft-Technik Intercooler and Charge Pipe Kit
Full kit to upgrade your charge pipes and front mount intercooler
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Brand: ECS - Corporate Logo
ES#: 3639384
Mfg#: 023880ECS01AKT1

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Availability:
Ships on Sep 23, 2026
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$999.99

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

$749.99 USD
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FDS Front-Mount Intercooler Kit - Silver
Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods!
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Brand: Integrated Engineering - Corporate Logo
ES#: 3470702
Mfg#: IETPCK1

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Availability:
In Stock
$1034.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
B9 S4/S5 Post Throttle Valve Charge Pipe Kit - Wrinkle Red
Ditch the plastic and increase air flow!
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Brand: ECS - Corporate Logo
ES#: 3579787
Mfg#: 024313ECS01-02KT

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Availability:
Ships on Aug 3, 2026
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$764.99

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

$611.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
VW MK8 2.0T / Audi 3.0T Diverter Valve Spacer - Clear Anodized
Let your turbo blow off some air for an exhilarating driving experience!
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Brand: ECS - Corporate Logo
ES#: 4033242
Mfg#: 028495ECS01

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Availability:
In Stock
On SALE Save 20%
$87.99

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

$69.99 USD
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on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Audi B9 S4 Intercooler Charge Pipe Kit
Increase intake air flow with our high flow charge pipes for your ECS Tuning or OEM intercooler!
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Brand: ECS - Corporate Logo
ES#: 3638868
Mfg#: 023880ECS01AKT

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Availability:
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$439.99

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

$351.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Stage 1 IE Performance ECU Tune - Includes Stage 1 TCU Tune & POWERlink Cable
Average gain of 138 horsepower and 178 lb-ft of torque on 91 Octane with stock hardware
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Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Brand: Integrated Engineering - Corporate Logo
ES#: 4418875
Mfg#: IESOVZ11TCU

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Availability:
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$1777.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Stage 1 IE Performance ECU Tune With POWERlink Cable
Average gain of 138 horsepower and 178 lb-ft of torque on 91 Octane with stock hardware
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Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Brand: Integrated Engineering - Corporate Logo
ES#: 4418872
Mfg#: IESOVZ11

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Availability:
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$1078.99 USD
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on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Unitronic Performance Software - Stage 1+ - With UniCONNECT+ Cable
Gain up to 100 horsepower and 112 lb-ft of torque on 93 Octane
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This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th
Brand: Unitronic - Corporate Logo
ES#: 4375901
Mfg#: 30T-EA839-1+-UC

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Availability:
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On SALE Save 14%
$1064.99

This product was last offered at the strikethrough price on
05-21-2026

$914.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Silicone Turbo Inlet Hose - Audi B9 S4/S5
Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability!
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Brand: ECS - Corporate Logo
ES#: 3420204
Mfg#: 024360ECS01

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Availability:
In Stock
On SALE Save 35%
$95.99

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

$62.39 USD
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This product is lifetime replacement eligible Lifetime Replacement
APR Upgraded Ignition Coils - Red - Set Of Six
Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark!
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CARB certified for sale in all 50 states
Brand: APR - Corporate Logo
ES#: 4030593
Mfg#: MS100192KT2
EO#: D-783-5

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Availability:
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$307.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Audi B9 S4/S5 3.0T Performance Baffled Oil Catch Can System
Keep your intake tract clean and carbon free
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Brand: ECS - Corporate Logo
ES#: 4044357
Mfg#: 023952ECS01KT

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Availability:
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On SALE Save 17%
$544.27

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

$449.99 USD
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Audi B9 S4/S5 Sportback 3.0T Valved Exhaust System
ECS evolutionary design and manufacturing, blending with raw emotion, desire and passion, creating a truly unique driving experience
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Brand: ECS - Corporate Logo
ES#: 4369839
Mfg#: 026018ECS

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Starting at $1427.58 USD
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B9 S4/S5 Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-100 cerakote black tips
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Fits models with factory rear sports differential
Brand: Milltek Sport - Corporate Logo
ES#: 3466846
Mfg#: SSXAU701

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Availability:
Ships in 3 Business Days
$3507.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
IE Performance Cast Downpipe
Features a TIG-welded 304 stainless and investment cast body and offers gains up to 45HP & 41TQ
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Brand: Integrated Engineering - Corporate Logo
ES#: 4473979
Mfg#: IEEXCK3

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$1099.99 USD
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IE Midpipe Exhaust Upgrade
Aggressive sound, quality finish, reliable operation, straightforward install, and affordable fun.
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Brand: Integrated Engineering - Corporate Logo
ES#: 4489116
Mfg#: IEEXCK4

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$804.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
B9 S4 3.0T Center X-Pipe
Sound great and save weight! Eliminate the center resonator on your OE system for a more aggressive exhaust note
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Brand: ECS - Corporate Logo
ES#: 3521607
Mfg#: 024365ECS01KT

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Availability:
In Stock
On SALE Save 25%
$429.99

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

$322.49 USD
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Billet Aluminum Front Strut Brace - Audi B9 A4/A5/S4/S5/RS5
Provides additional support to the strut towers for flex reduction to enhance your driving experience
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Brand: ECS - Corporate Logo
ES#: 3188267
Mfg#: 019218ECS01

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Availability:
In Stock
On SALE Save 32%
Limited Qty Sale
$383.99

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

$259.77 USD
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Billet Aluminum Transmission Mount Insert
This billet aluminum insert is designed to fill the large void in the factory transmission mount
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Brand: 034Motorsport - Corporate Logo
ES#: 3176060
Mfg#: 034-509-4053

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$91.00 USD
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Transmission Mount Bushing Insert Kit
Decrease transmission mount slop for better drivetrain response!
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Brand: ECS - Corporate Logo
ES#: 3170153
Mfg#: 019209ECS01

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Availability:
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On SALE Save 15%
$91.99

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

$78.19 USD
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This product is lifetime replacement eligible Lifetime Replacement

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