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Audi B5 S4 2.7T

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Audi B5 S4 2.7T Performance Engine Parts

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Water/Methanol Nozzle - 3.5GPH

ES#4476207 - SN0-N0350 - Water/Methanol Nozzle - 3.5GPH - 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#:
4476207
Mfg#:
SN0-N0350
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forge Motorsport Valve Service Kit

ES#4781648 - FMDv004S - Forge Motorsport Valve Service Kit - Service kit for FMDv004 - Forge - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Service kit for FMDv004

Brand:
Forge - Corporate Logo
ES#:
4781648
Mfg#:
FMDV004S
Back Ordered
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

008 Premium Diverter Valve - Matte Silver

ES#2847752 - FMDV008MS - 008 Premium Diverter Valve - Matte Silver - Smaller, tougher and tuneable - Forge - Audi Volkswagen Porsche

Smaller, tougher and tuneable 2 required

Brand:
Forge - Corporate Logo
ES#:
2847752
Mfg#:
FMDV008MS
Back Ordered
$180.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Blue

ES#4846429 - CMBVLRBLT040171 - 10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Blue - Allows perfect fixation of the fuel pressure regulator in the desired location. - SPA Performance - Audi Volkswagen

Allows perfect fixation of the fuel pressure regulator in the desired location.

Brand:
SPA Performance - Corporate Logo
ES#:
4846429
Mfg#:
CMBVLRBLT040171
In Stock
ON SALE!
$94.99

This product was last offered at the strikethrough price on
10-01-2026

$89.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Red

ES#4846430 - CMBVLRRDT040173 - 10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Red - Allows perfect fixation of the fuel pressure regulator in the desired location. - SPA Performance - Audi Volkswagen

Allows perfect fixation of the fuel pressure regulator in the desired location.

Brand:
SPA Performance - Corporate Logo
ES#:
4846430
Mfg#:
CMBVLRRDT040173
Ships on Mar 10, 2027
ON SALE!
$94.99

This product was last offered at the strikethrough price on
10-01-2026

$89.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Black

ES#4846418 - CMBVLRPSH01BK - 10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Black - Allows perfect fixation of the fuel pressure regulator in the desired location. - SPA Performance - Audi Volkswagen

Allows perfect fixation of the fuel pressure regulator in the desired location.

Brand:
SPA Performance - Corporate Logo
ES#:
4846418
Mfg#:
CMBVLRPSH01BK
Ships in 4 Business Days
ON SALE!
$94.99

This product was last offered at the strikethrough price on
10-01-2026

$89.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Anti-Theft Service

ES#2063652 - APRTHEFT-SRV - Anti-Theft Service - *Sale applies only to ECU with 3 or 4 program purchase. - APR - Audi Volkswagen

*Sale applies only to ECU with 3 or 4 program purchase. Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
2063652
Mfg#:
APRTHEFT-SRV
In Stock
ON SALE! SAVE 10%
$199.00

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

$179.10 USD
This product is lifetime replacement eligible Lifetime Replacement

Valve Guide - Priced Each

ES#2794454 - IEVTVA1 - Valve Guide - Priced Each - Upgrade to new bronze alloy valve guides - Integrated Engineering - Audi Volkswagen

Upgrade to new bronze alloy valve guides

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794454
Mfg#:
IEVTVA1
Back Ordered
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

FSB WMI Controller - V3 For Charge Pipe Injection (CPI)

ES#3514866 - FSB-CPI - FSB WMI Controller - V3 For Charge Pipe Injection (CPI) - Allows your JB4 to control a WMI pump and solenoid for dynamic progressive flow mapping! - Burger Motorsports - Audi BMW Volkswagen MINI

Allows your JB4 to control a WMI pump and solenoid for dynamic progressive flow mapping! For use in setups where charge pipe injection is being utilized.

Brand:
Burger Motorsports - Corporate Logo
ES#:
3514866
Mfg#:
FSB-CPI
Ships on Oct 22, 2026
$150.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Snow Performance Tee Adapter Fitting

ES#4376612 - SN0-82040R - Snow Performance Tee Adapter Fitting - 1/4" tee fitting for water/methanol lines - SnowPerformance - Audi BMW Volkswagen MINI Porsche

1/4" tee fitting for water/methanol lines

Brand:
SnowPerformance - Corporate Logo
ES#:
4376612
Mfg#:
SN0-82040R
In Stock at Vendor
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

5v Intake Valve spring / OD 20.60mm/ CB: 23.0 mm / Max lift 12.1mm / Chrome Silicon

ES#4735623 - SPR-A2095 - 5v Intake Valve spring / OD 20.60mm/ CB: 23.0 mm / Max lift 12.1mm / Chrome Silicon - Supertech - Audi Volkswagen

Brand:
Supertech - Corporate Logo
ES#:
4735623
Mfg#:
SPR-A2095
In Stock
Limited Qty Sale
$12.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Downpipe Flange For RS6 or RS6-R Turbos - Pair (Bolt On)

ES#4046113 - RS6UDPFBO - Downpipe Flange For RS6 or RS6-R Turbos - Pair (Bolt On) - This is a universal flange that will allow you to run RS6 style turbos (with OEM RS6 turbine bolt patterns) on your current K03-K04 flanged downpipes. Just bolt these flanges to the back of your turbos! - JH Motorsports - Audi

This is a universal flange that will allow you to run RS6 style turbos (with OEM RS6 turbine bolt patterns) on your current K03-K04 flanged downpipes. Just bolt these flanges to the back of your turbos!

Brand:
JH Motorsports - Corporate Logo
ES#:
4046113
Mfg#:
RS6UDPFBO
Ships on Oct 21, 2026
$140.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Fuel Rail Spacer - Priced Each

ES#3524645 - 034-106-7021 - Billet Fuel Rail Spacer - Priced Each - For spacing out 1.8T and 2.7T fuel rail when using longer than stock injectors - 034Motorsport - Audi Volkswagen

For spacing out 1.8T and 2.7T fuel rail when using longer than stock injectors 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3524645
Mfg#:
034-106-7021
Ships in 3 Business Days
$6.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Phenolic Intake Manifold Spacer Kit - Large Port

ES#3183772 - 034-108-9003-LP - Phenolic Intake Manifold Spacer Kit - Large Port - Phenolic Intake Manifold Spacer, 5mm Thickness to Prevent Heat Conductivity to the Intake Manifold From the Cylinder Head. - 034Motorsport - Audi

Phenolic Intake Manifold Spacer, 5mm Thickness to Prevent Heat Conductivity to the Intake Manifold From the Cylinder Head. 2X Entries Into Our F80 M3 Sweepstakes
Large Port - For 2.7T models using 2.8L 30V or RS4 manifolds and/or cylinder heads

Brand:
034Motorsport - Corporate Logo
ES#:
3183772
Mfg#:
034-108-9003-LP
Ships in 3 Business Days
$128.00 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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