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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Performance Engine Parts

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Stage 3 Boost Cooler (Direct Injection) - Braided Line

Brings true 2D mapped water-methanol injection delivery to your DI (direct fuel injected) and forced induction vehicle

Brand:
SnowPerformance - Corporate Logo
ES#:
3557781
Mfg#:
SN0-320-BRD
In Stock at Vendor
$833.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

X34 Carbon Fiber Cold Air Intake System

ES#3988146 - 034-108-1013 - X34 Carbon Fiber Cold Air Intake System - Delivers improved power, sound, and acceleration to B9 Audi S4/S5 owners in a clean OEM+ package - 034Motorsport - Audi

Delivers improved power, sound, and acceleration to B9 Audi S4/S5 owners in a clean OEM+ package 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3988146
Mfg#:
034-108-1013
Ships in 2 Business Days
ON SALE! SAVE 10%
$908.00

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

$817.20 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black With App Control

ES#4339048 - 904526 - RaceChip GTS Black With App Control - Get up to +41 hp and +74 through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Audi

Get up to +41 hp and +74 through a safe and easy to use app-controlled tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4339048
Mfg#:
904526
Ships in 5 Business Days
$799.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Replacement Universal Oil Cooler - 19 Row

ES#2855412 - MM0C-19 - Replacement Universal Oil Cooler - 19 Row - Serious engine oil cooling for the most demanding engines - Mishimoto - Audi BMW Volkswagen MINI

Serious engine oil cooling for the most demanding engines

Brand:
Mishimoto - Corporate Logo
ES#:
2855412
Mfg#:
MM0C-19
In Stock
$218.99

This product was last offered at the strikethrough price on
05-06-2026

$196.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water/Methanol Nozzle - 8GPH

ES#4362075 - SN0-N0800 - Water/Methanol Nozzle - 8GPH - Snow Performance Hyper-Sonic water-methanol injection nozzle - SnowPerformance - Audi BMW Volkswagen MINI

Snow Performance Hyper-Sonic water-methanol injection nozzle

Brand:
SnowPerformance - Corporate Logo
ES#:
4362075
Mfg#:
SN0-N0800
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up

Unitronic Performance Software - Stage 1+

ES#4376314 - 30T-EA839-1+ - Unitronic Performance Software - Stage 1+ - Gain up to 100 horsepower and 112 lb-ft of torque on 93 Octane - Unitronic - Audi

Gain up to 100 horsepower and 112 lb-ft of torque on 93 Octane This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4376314
Mfg#:
30T-EA839-1+
In Stock
ON SALE! SAVE 17%
$900.00

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

$750.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 3 Boost Cooler (EFI - Port Injection) - Nylon Line

ES#4144931 - SN0-310 - Stage 3 Boost Cooler (EFI - Port Injection) - Nylon Line - Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle - SnowPerformance - Audi BMW Volkswagen MINI

Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle

Brand:
SnowPerformance - Corporate Logo
ES#:
4144931
Mfg#:
SN0-310
In Stock at Vendor
$729.99 USD
Free Shipping
on orders $49 and up

Active Valve Control System

ES#3426977 - SSXAU677 - Active Valve Control System - Gain complete control of the OE exhaust valves on factory and Milltek Sport exhaust systems - Milltek Sport - Audi

Gain complete control of the OE exhaust valves on factory and Milltek Sport exhaust systems

Brand:
Milltek Sport - Corporate Logo
ES#:
3426977
Mfg#:
SSXAU677
Ships in 5 Business Days
ON SALE! SAVE 10%
$809.99

This product was last offered at the strikethrough price on
08-29-2026

$728.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

COBB Tuning Accessport Tuner V3

ES#4668573 - AP3-VLK-004 - COBB Tuning Accessport Tuner V3 - Gain up to 80 horsepower and 151 lb-ft of torque on 93 Octane - CobbTuning - Audi

Gain up to 80 horsepower and 151 lb-ft of torque on 93 Octane

Brand:
CobbTuning - Corporate Logo
ES#:
4668573
Mfg#:
AP3-VLK-004
In Stock
ON SALE! SAVE 10%
$770.00

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

$693.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Titanium Exhaust Wrap - 2" X 25'

ES#3022276 - HEA-WRAPKIT-25 - Titanium Exhaust Wrap - 2" X 25' - Designed to handle continuous temperatures up to 1,800F - Prosport Performance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Designed to handle continuous temperatures up to 1,800°F

Brand:
Prosport Performance - Corporate Logo
ES#:
3022276
Mfg#:
HEA-WRAPKIT-25
Ships in 1 Business Day
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Boost Cooler Stage 2.5 Progressive Water/Methanol Injection Kit - no tank

Unlock 50-70 HP on your boosted vehicle while decreasing your air temps by up to 100 degrees! Stainless Steel Braided Line, 4AN Fittings, no tank included!

Brand:
SnowPerformance - Corporate Logo
ES#:
4608739
Mfg#:
SN0-210-BRD-T
In Stock at Vendor
$687.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

SuperDuper Turbo Inlet Pipe + P34 SuperDuper Conversion Kit

ES#4642913 - 034-108-5043 - SuperDuper Turbo Inlet Pipe + P34 SuperDuper Conversion Kit - Includes conversion kit to to convert your P34 Intake from a stock turbo sized inlet to our larger SuperDuper Turbo Inlet Pipe. - 034Motorsport - Audi

Includes conversion kit to to convert your P34 Intake from a stock turbo sized inlet to our larger SuperDuper Turbo Inlet Pipe. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4642913
Mfg#:
034-108-5043
Ships in 2 Business Days
ON SALE! SAVE 10%
$250.00

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

$225.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JB4 OBDII Cable - 2 Position (Cable Only)

ES#4714891 - JB4-OBDII-CA - JB4 OBDII Cable - 2 Position (Cable Only) - Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. - Burger Motorsports - Audi BMW Volkswagen MINI

Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.

Brand:
Burger Motorsports - Corporate Logo
ES#:
4714891
Mfg#:
JB4-OBDII-CA
In Stock
$25.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Oil Cooler Black - 10 Row

ES#2764962 - MM0C10BK - Universal Oil Cooler Black - 10 Row - Serious engine oil cooling for the most demanding engines - Mishimoto - Audi BMW Volkswagen MINI

Serious engine oil cooling for the most demanding engines

Brand:
Mishimoto - Corporate Logo
ES#:
2764962
Mfg#:
MM0C10BK
In Stock
$126.99 USD
Free Shipping
on orders $49 and up
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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