Top ECS Products for your Audi B6 A4
The Audi B6 A4 has become one of the most popular Audis to upgrade, tune, and personalize. With a plethora of options available, how do you choose what to do next?
Each of the following parts have become extremely popular by fixing, fine tuning, or enhancing the performance and appearance of your A4.
We have hand selected our top ECS products specifically for your A4.
ECS Top Products
Fits:
Audi B6 A4 (2002-2005)
RA4 240mm Clutch Conversion Kit - Stage 1
Lightweight flywheel with the S4 pressure plate and disc
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Brand:
ES#:
5488
Mfg#:
ECSB6A4RA4S1KTST
ECS "Stage 4" Front Big Brake Kit - B5/B6/B7/C5
Enhance braking performance with this plug-and-play upgrade! Featuring massive 6-piston calipers, lightweight 2-piece brake rotors, and all components needed for installation.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
1896
Mfg#:
B5S4S4BBKRXS
Front Big Brake Kit - Stage 4 - 2-Piece Cross Drilled & Slotted Rotors (352x32)
For customers with existing 18z calipers, brake pads, & fluid
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Brand:
ES#:
3082393
Mfg#:
B5S4S4BBKRXSKT
RA4 Single Mass Flywheel Kit
Choose street smooth or track tough
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Brand:
ES#:
12085
Mfg#:
ECS212321B6KT
Audi B5/B6/B7 A4/S4 Street Shield Skid Plate Kit
Protect vital drivetrain and chassis components from costly damage with this durable 7GA aluminum skid plate!
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
4840231
Mfg#:
030456LA01KT
Adjustable Short Throw Shifter - Audi B6/B7 A4/S4
Find your perfect setting with 3 steps of throw reduction
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
3023144
Mfg#:
009198ECS01
Complete Rear Differential Mount Kit
Includes the ECS Rear Differential Mount and Carrier Mount Inserts!
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
3172515
Mfg#:
018327ECS01KT
2.0T Coil Pack Conversion Kit - Stage 2
Includes anodized black conversion plate -w- red 2.0T coils and black hold down kit
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
2713398
Mfg#:
002598ECS10KT
Carbon Fiber Mirror Cap Set - Audi B6/B7/8P/C6
Upgrade your exterior look
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
2804800
Mfg#:
010253ECS01KT
2.0T Coil Pack Conversion Kit - Stage 2
Includes anodized black conversion plate -w- red 2.0T coils and red hold down kit
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
2713402
Mfg#:
002598ECS11KT
Performance Rear Differential Mount - Audi B6/B7 A4/S4
Increase drivetrain rigidity and response!
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Brand:
ES#:
2717984
Mfg#:
003249ECS01
Ball Seat Stud Conversion Kit
Make wheel changes faster and easier
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For use with ball seat wheels and up to 20mm spacers only
For use with ball seat wheels and up to 20mm spacers only
Brand:
ES#:
2804052
Mfg#:
001467ECS01KT1
Front & Rear Exact-Fit Stainless Steel Brake Lines - Kit
Complete set of DOT-compliant lines for an improved pedal feel
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
1402
Mfg#:
B6A4SSBLK
ECS Wheel Spacer & Bolt Kit - 15mm With Ball Seat Bolts
Includes everything you need to install spacers on two wheels
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits OEM wheels or wheels that require ball seat wheel bolts
Fits OEM wheels or wheels that require ball seat wheel bolts
Brand:
ES#:
250727
Mfg#:
ECS10157KTWB
Performance Snub Mount
Reduce driveline lash with a full polyurethane mount
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
2718769
Mfg#:
004329ECS01A
Rear Differential Carrier Mount Bushing Insert Kit
Decrease differential slop for better drivetrain response!
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
3132752
Mfg#:
018327ECS01
Magnetic Oil Drain Plug - With 10 Aluminum Washers
Capture harmful particles to prevent wear. M14x1.5
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
3187654
Mfg#:
001196ECS01-02
Billet Aluminum Coolant J-Plug W/ O-ring (06B103033A)
Engineered to be the last worry in your coolant system
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
2763232
Mfg#:
005224ECS01A
Fuel Pressure Gauge Kit
Great for custom tuning and easily installs on the pressure line
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
5701
Mfg#:
000198500BLK-A
Silicone Turbo Inlet Hose
Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability!
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
3134120
Mfg#:
011204ECS02