Add horsepower, torque, sound, and throttle response to your B8/B8.5 S4!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Add horsepower, torque, sound, and throttle response to your B8/B8.5 S4!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Engine mounted, stainless steel braided line, 4AN fittings
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Robust protection for your WMI installation to ensure peace of mind
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Looks as great as it performs
Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
CARB certified for sale in all 50 states
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
06-12-2026
Swappable swirl generators for 250/500/1000cc configurations!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Re-routes the fuel line underneath the intake tube for a cleaner look!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE
From the 2013 model year
All the necessities to move your tank to the trunk of any vehicle.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This product was last offered at the strikethrough price on
06-11-2026
Replacement filter for CTS-IT-300R and CTS-IT-938
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This product was last offered at the strikethrough price on
06-08-2026
Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Enhance the sound and performance of your S4 with an ECS Tuning cat-back and a Kohlefaser Luft-Technik Intake System
Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This product was last offered at the strikethrough price on
05-05-2026
Add some style, class, and sporty look to your IE S4 or S5 3.0T Cold Air Intake with this direct-fit carbon fiber lid!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
To be used in Integrated Engineering Cold Air Intake System: IEINCG2A or IEINSG1
High-Flow Low-Current WMI Solenoid - 200PSI 1/8in-27NPT In/Out
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
W/Brackets, Solenoid, Hose & All Necessary Fittings
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Re-routes the fuel line underneath the intake tube for a cleaner look!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE
Up to the 2012 model year
Proportionally injects more or less water/methanol according to boost pressure
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Replacement air filter for APR Carbonio intake systems
Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
CARB certified for sale in all 50 states
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
06-12-2026