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Audi B9 S5 Quattro 3.0T Sportback

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Audi B9 S5 Quattro 3.0T Sportback Performance Engine Parts

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Stainless Steel Racing Catalyst for B9 Audi S4/S5

ES#4005390 - 034-105-4045 - Stainless Steel Racing Catalyst for B9 Audi S4/S5 - Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note - 034Motorsport - Audi

Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note

Brand:
034Motorsport - Corporate Logo
ES#:
4005390
Mfg#:
034-105-4045
In Stock
$1700.00

This product was last offered at the strikethrough price on
03-08-2026

$1200.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Universal Catch Can Kit - Carbon Fiber

ES#2500608 - MM0CCCF - Universal Catch Can Kit - Carbon Fiber - Kit with catch can and rubber hose; for retrofitting on a variety of vehicles. - Mishimoto - Audi BMW Volkswagen MINI

Kit with catch can and rubber hose; for retrofitting on a variety of vehicles.

Brand:
Mishimoto - Corporate Logo
ES#:
2500608
Mfg#:
MM0CCCF
In Stock
$162.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

KOMPACT EM BOV VR18 Plum Back

ES#4745487 - TS-0223-1279 - KOMPACT EM BOV VR18 Plum Back - Seamlessly install a Kompact EM Valve without the need for adaptors, hoses, or additional assembly. - TurboSmart - Audi

Seamlessly install a Kompact EM Valve without the need for adaptors, hoses, or additional assembly.

Brand:
TurboSmart - Corporate Logo
ES#:
4745487
Mfg#:
TS-0223-1279
In Stock at Vendor
10% off MSRP

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

$309.99

This product was last offered at the strikethrough price on
07-22-2026

$278.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

P34 Cold Air Intake

ES#4381931 - 034-108-1028 - P34 Cold Air Intake - 034Motorsport's P34 Cold Air Intake System delivers improved power, sound, and acceleration - 034Motorsport - Audi

034Motorsport's P34 Cold Air Intake System delivers improved power, sound, and acceleration

Brand:
034Motorsport - Corporate Logo
ES#:
4381931
Mfg#:
034-108-1028
In Stock
$556.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 IE Performance ECU Tune - Includes Stage 1 TCU Tune & POWERlink Cable

ES#4418873 - IESOVZ12 - Stage 2 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 full bolts-ons - Integrated Engineering - Audi

Average gain of 138 horsepower and 178 lb-ft of torque on 91 Octane with full bolts-ons 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Requires downpipe, intake, and intercooler upgrades.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4418873
Mfg#:
IESOVZ12
In Stock
$1178.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE ProCore Performance Cast Downpipe - B9 S4/S5

ES#4708493 - IEEXCK6 - IE ProCore Performance Cast Downpipe - B9 S4/S5 - Check-Engine Light free! An emissions-friendly approach to exhaust upgrades! - Integrated Engineering - Audi

Check-Engine Light free! An emissions-friendly approach to exhaust upgrades! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4708493
Mfg#:
IEEXCK6
Ships in 5 Business Days
$2874.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Wetter Coolant Additive - 12oz

ES#261427 - 80204 - Water Wetter Coolant Additive - 12oz - Reduces coolant temperatures by as much as 30*F - Redline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Reduces coolant temperatures by as much as 30*F

Brand:
Redline - Corporate Logo
ES#:
261427
Mfg#:
80204
In Stock
$15.99 USD
Free Shipping
on orders $49 and up

HJS Tuning 2.5" High-Flow ECE Downpipes

ES#3508359 - SSXAU725 - HJS Tuning 2.5" High-Flow ECE Downpipes - Featuring HJS Tuning 200cpsi ECE-approved sports cat - Fits with OE and Milltek cat-back systems. - Milltek Sport - Audi

Featuring HJS Tuning 200cpsi ECE-approved sports cat - Fits with OE and Milltek cat-back systems.

Brand:
Milltek Sport - Corporate Logo
ES#:
3508359
Mfg#:
SSXAU725
Ships in 4 Business Days
$5244.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Baffled Oil Catch Can - 6oz

ES#4369811 - 003779ECS05-01 - ECS Tuning Baffled Oil Catch Can - 6oz - Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! - ECS - Audi BMW Volkswagen MINI

Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! 10X Entries For Our 25th Anniversary Sweepstakes!
For use with custom plumbing and ECS universal mounting bracket kit

Brand:
ECS - Corporate Logo
ES#:
4369811
Mfg#:
003779ECS05-01
In Stock
ON SALE! SAVE 46%
$233.99

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

$126.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BOSS800 Hybrid Turbocharger

ES#5435523 - TR-2251 - BOSS800 Hybrid Turbocharger - Blending OEM drivability with Tier 1 supercar power. - CTS - Audi

Blending OEM drivability with Tier 1 supercar power.

Brand:
CTS - Corporate Logo
ES#:
5435523
Mfg#:
TR-2251
Ships in 8 Business Days
$2499.99 USD
Free Shipping

B9 S4/S5/SQ5 3.0T Intercooler kit

ES#4499830 - RA841C100200 - B9 S4/S5/SQ5 3.0T Intercooler kit - Increased volume and surface area, bar and plate cores with end tanks specifically designed to promote even airflow. - REVO - Audi

Increased volume and surface area, bar and plate cores with end tanks specifically designed to promote even airflow.

Brand:
REVO - Corporate Logo
ES#:
4499830
Mfg#:
RA841C100200
Back Ordered
$819.00 USD
This product is lifetime replacement eligible Lifetime Replacement

AWE Track Edition Exhaust System - Audi B9 S5 Sportback 3.0T

ES#4723734 - AWEB9S5SBTK - AWE Track Edition Exhaust System - Audi B9 S5 Sportback 3.0T - Equipped with the same precision-engineering as its Touring Edition counterpart, minus the resonators up front and 180 Technology resonators in the rear. - AWE - Audi

Equipped with the same precision-engineering as its Touring Edition counterpart, minus the resonators up front and 180 Technology® resonators in the rear.

Brand:
AWE - Corporate Logo
ES#:
4723734
Mfg#:
AWEB9S5SBTK
Ships on Aug 11, 2026
Starting at $2335.00 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RS+ Injector Upgrade Kit - EA839 3.0T/2.9T

ES#5374600 - 034-106-3044 - RS+ Injector Upgrade Kit - EA839 3.0T/2.9T - Safely provides a 67% increase in flow over EA839 3.0T and 31% increase over EA839 2.9T/EA825 4.0T RS Injectors! - 034Motorsport - Audi

Safely provides a 67% increase in flow over EA839 3.0T and 31% increase over EA839 2.9T/EA825 4.0T RS Injectors! Must Run a 034Motorsport Stage 3 File Specifically for These Injectors

Brand:
034Motorsport - Corporate Logo
ES#:
5374600
Mfg#:
034-106-3044
Ships in 3 Business Days
$2400.00 USD
Free Shipping

Cat-Back Exhaust System - Non-Resonated (Louder)

ES#3240938 - SSXAU657 - Cat-Back Exhaust System - Non-Resonated (Louder) - 2.50" stainless steel with quad GT-90 titanium tips - Milltek Sport - Audi

2.50" stainless steel with quad GT-90 titanium tips Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3240938
Mfg#:
SSXAU657
Ships in 4 Business Days
$4158.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine Parts

Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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