TOP ECS Products | Audi B9 S4
ECS loves helping you make your car all it can be, that’s why we’ve put all our top performance parts for your Audi together in one place. This list, compiled by our Audi gurus and designed by our fantastic R&D team, is everything you need to outfit your car with all those goodies you’ve wanted for your build. Let’s make your summer even more fun with all the best ECS Performance parts for your Audi.
Top Products from ECS
Audi B9 S4 Quattro 3.0T
Carbon Fiber Front Lip Spoiler - Audi B9 A4/S4
Hand-laid carbon fiber to upgrade your exterior styling
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Brand:
ES#:
3146390
Mfg#:
019196ECS01A
Carbon Fiber Trunk Spoiler - Audi B9 A4/S4
Add a touch of style and real carbon fiber to your Audi
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Brand:
ES#:
3141741
Mfg#:
019220ECS01A
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:
ES#:
3545247
Mfg#:
023796ECS04
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:
ES#:
3477816
Mfg#:
023795ECS06
Carbon Fiber Grille Accent Set - Audi B9 A4/S4
Hand-laid carbon fiber to upgrade your exterior styling
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Brand:
ES#:
3420220
Mfg#:
024314ECS01
Carbon Fiber Side Blade Set
Add a touch of style made with real carbon fiber to your Audi
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Brand:
ES#:
3195012
Mfg#:
019189ECS01KT
Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5
With Lane Change Assist
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Brand:
ES#:
3411932
Mfg#:
024564ECS01
19" Wheel Spacer Flush Fit Kit - Black Bolts
Includes ECS spacers & Black bolts to obtain a flush look on your OE 19" wheels
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Brand:
ES#:
3240970
Mfg#:
023881ECS01KT
Carbon Fiber ECU Cover - Audi B9 S4/S5/RS5
Compliment your engine bay and hide away the exposed ECU
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Brand:
ES#:
3247906
Mfg#:
024249ECS01
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:
ES#:
3521607
Mfg#:
024365ECS01KT
Carbon Fiber Front Lip Overlay - Audi B9 A4/S4
Add a subtle touch of carbon fiber to your B9 A4/S4 front bumper
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Brand:
ES#:
3220704
Mfg#:
022539ECS01
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:
ES#:
3188267
Mfg#:
019218ECS01
Front 2-Piece Brake Rotors - Pair (350x34)
Direct bolt-on replacement - 16% less weight!
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Brand:
ES#:
3493799
Mfg#:
023938ECS01KT
Audi B9 A4/S4 Carbon Fiber Radiator Support Cover - (NO LONGER AVAILABLE)
Carbon fiber, front and center!
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Brand:
ES#:
3437186
Mfg#:
024715ECS01
No longer available
Luft-Technik Intake Air Scoop
Extends farther down behind the grille to direct more air to the intake system
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Brand:
ES#:
3183334
Mfg#:
019848ECS01
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:
ES#:
3420204
Mfg#:
024360ECS01
Complete Carbon Fiber Grille Accent And Overlay Kit
Completely change your front end appearance with the full kit!
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Brand:
ES#:
3557655
Mfg#:
024315ECS01KT
Carbon Fiber Fog Grille Overlay Set
Hide your chrome with hand-laid carbon fiber
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Brand:
ES#:
3420312
Mfg#:
024315ECS01
No longer available
Carbon Fiber Center Console Overlay
Add a touch of carbon fiber to your interior center console
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Brand:
ES#:
3493077
Mfg#:
022566ECS01KT
Wheel Spacer & Bolt Kit - 10mm With Black Ball Seat Bolts
Complete kit for two wheels, includes everything you need to install spacers
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Fits OEM wheels, or wheels that use OEM ball seat wheel bolts
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts
Brand:
ES#:
2748282
Mfg#:
002411ECS02AKT5
Luft-Technik B9 S4 Front Mount Intercooler
Reduce restrictions and increase cooling!
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Brand:
ES#:
3537699
Mfg#:
019219ECS01AKT
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Availability:
Ships on Sep 23, 2026
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Ships on Sep 23, 2026
Rear 2-Piece Brake Rotors - Pair (330x22)
Direct bolt-on replacement - 15% less weight!
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Brand:
ES#:
3493800
Mfg#:
023944ECS01KT
Carbon Fiber Intake Scoop & Overlay Kit
Full solution to give your factory intake system a performance look!
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Brand:
ES#:
3476954
Mfg#:
024641ECS01KT
Carbon Fiber Dashboard Overlay Set
Add a touch of carbon fiber to your interior dash
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Fits 7" MMI screen only
Fits 7" MMI screen only
Brand:
ES#:
3191341
Mfg#:
022565ECS01
No longer available
Wheel Spacer & Bolt Kit - 12.5mm With Black Ball Seat Bolts
Complete kit for two wheels, includes everything you need to install spacers
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts
Brand:
ES#:
2748284
Mfg#:
002411ECS02AKT6
Complete Drivetrain Mount Insert Kit
Decrease slop and increase drivetrain rigidity and response!
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Brand:
ES#:
3194637
Mfg#:
019208ECS01KT1
Audi B9 Carbon Fiber Antenna Cover
Add a unique, lightweight look to your B9
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Brand:
ES#:
3468626
Mfg#:
024985ECS01
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Availability:
Ships in 5 Business Days
Ships in 5 Business Days
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:
ES#:
3638868
Mfg#:
023880ECS01AKT
Front 2-Piece Scalloped Brake Rotors - Pair (350x34)
Direct bolt-on upgrade to Tru-Float scalloped style rotors. Over 15% less weight!
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Brand:
ES#:
3559513
Mfg#:
023940ECS01KT