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
Transmission Mount Bushing Insert Kit
Decrease transmission mount slop for better drivetrain response!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3170153
Mfg#:
019209ECS01
Audi B9 S4 Luft-Technik Intercooler and Charge Pipe Kit
Full kit to upgrade your charge pipes and front mount intercooler
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3639384
Mfg#:
023880ECS01AKT1
Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.
Availability:
Ships on Sep 23, 2026
Auto Notify
Ships on Sep 23, 2026
ECS Tuning Billet Engine Oil Dipstick - Black Anodized
A beautiful addition and durable upgrade for your engine
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3545565
Mfg#:
023954ECS01-02
Front Bumper Reflector Film Set - Gunsmoke
Pre-cut Lamin-X film to cover both orange reflectors on the front bumper cover
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits pre-facelift models only - Through the 2018 model year
Fits pre-facelift models only - Through the 2018 model year
Brand:
ES#:
3141518
Mfg#:
020232ECS01
Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.
Availability:
Ships in 2 Business Days
Ships in 2 Business Days
Wheel Spacer & Bolt Kit - 15mm 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#:
2748286
Mfg#:
002411ECS03AKT3
Audi B9 Billet Tunnel Brace - Red - (NO LONGER AVAILABLE)
Replace your small and weak stamped brace with heavy-duty billet aluminum!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3476942
Mfg#:
023781ECS01-02
No longer available
Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate
Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3411957
Mfg#:
019207ECS01KT
B9 A4/S4 Carbon Fiber Intake Box Overlay - (NO LONGER AVAILABLE)
Performance appearance without removing your factory air box!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3447943
Mfg#:
024640ECS01
No longer available
ECS Tuning Billet Engine Oil Dipstick - Polished
A beautiful addition and durable upgrade for your engine
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3545564
Mfg#:
023954ECS01-01
Wheel Spacer & Bolt Kit - 8mm with Black Ball Seat Bolts
Includes everything you need to install our new wheel-centric spacers on two wheels
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Designed to be used with OE wheels only
Designed to be used with OE wheels only
Brand:
ES#:
2788501
Mfg#:
002411ECS04A8KT2
Rear Bumper Reflector Film set - Gunsmoke
Pre-cut Lamin-X film to cover both reflectors on the rear bumper cover
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3149378
Mfg#:
020796ECS01A
Carbon Fiber Grille Accent Set - (NO LONGER AVAILABLE)
Hand-laid carbon fiber to upgrade your exterior styling
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3195023
Mfg#:
019511ECS01KT
No longer available
B9 A4/S4 Carbon Fiber Inlet Scoop
Channel air to your intake with performance syle!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3537354
Mfg#:
024641ECS02KT
EA839 2.9T/3.0T Billet Oil Filter Housing - Black
Ditch the easily broken/stripped plastic oil filter cap for a durable billet upgrade
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3504941
Mfg#:
024354ECS01-01
Wheel Spacer & Bolt Kit - 10mm With 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 OE wheels, or wheels that use OE ball seat wheel bolts
Fits OE wheels, or wheels that use OE ball seat wheel bolts
Brand:
ES#:
2603073
Mfg#:
002411ECS02AKT2
Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.
Availability:
Back Ordered
Auto Notify
Back Ordered
ECS UNIVERSAL Swivel Exhaust Tip - 4.0" Black Chrome - Priced Each
Stainless Steel exhaust tip featuring swivel attachment for maximum adjustability. 2.5" Swivel Inlet / 4.0" Double Wall, Slant Cut Outlet
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!
Not vehicle specific. You MUST measure prior to purchasing!
Brand:
ES#:
2918636
Mfg#:
003358ECS03A02
Wheel Spacer & Bolt Kit - 5mm With Black Conical Seat Bolts
Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that use conical seat wheel bolts
Fits most aftermarket wheels that use conical seat wheel bolts
Brand:
ES#:
2748279
Mfg#:
6-ECS-015
ECS UNIVERSAL Swivel Exhaust Tips - 3.5" Black Chrome - Pair
Stainless Steel exhaust tips featuring swivel attachments for maximum adjustability. 2.5" Swivel Inlet / 3.5" Double Wall, Slant Cut Outlet
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!
Not vehicle specific. You MUST measure prior to purchasing!
Brand:
ES#:
2986535
Mfg#:
006555ECS04A02KT
Audi B9 Billet Tunnel Brace - Black
Replace your small and weak stamped brace with heavy-duty billet aluminum!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3476922
Mfg#:
023781ECS01-01
Billet Hood Latch Release Handle
Billet aluminum hood release handle replacement for the plastic OEM hood pull
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3195650
Mfg#:
019386ECS01
Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.
Availability:
In Stock
In Stock