Top Mods for your B6 A4
ECS loves helping you make your car all it can be; that's why we've put all the top-of-the-line performance parts for your AUDI B6 A4 together in one place. This list, compiled by our own BMW gurus, is everything you need to outfit your car with all those goodies you've wanted for your build. Let's make race season even more fun with all the best performance parts for your Audi B6 A4!
Hand Selected By Our Team Of Enthusiast
For Your
AUDI B6 A4 1.8T
Adjustable Damping Performance Coilover System - Audi B6/B7 A4/S4
Take control of your ride while going low with our sport-tuned coilover system!
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Brand:
ES#:
3624746
Mfg#:
027966ECS01
BR Series Coilover Suspension Kit
Featuring 30 levels of adjustment and performance spring rates and valving
Dynamic Ride Control (DRC) must be removed - Fits both sedan and cabriolet models
Brand:
ES#:
3521686
Mfg#:
S-02-BR
Density Line Complete Front Control Arm Kit
Includes new control arms with Density Line control arm bushings and hardware
Brand:
ES#:
3046839
Mfg#:
034-401-1004
Density Line Adjustable Upper Control Arm Kit (Camber Correcting)
Adds positive camber to eliminate inner tire wear and reach factory alignment specs
Brand:
ES#:
2864576
Mfg#:
034-401-1000
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Availability:
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Audi B6/B7 A4/S4 Front 32mm & Rear 25mm Sway Bar Kit
Reduce body roll and enhance handling!
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Brand:
ES#:
4609000
Mfg#:
000601LA01FRKT
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Availability:
Ships on Sep 23, 2026
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Ships on Sep 23, 2026
Front Adjustable Sway Bar (32mm)
Upgrade your suspension
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Brand:
ES#:
2028
Mfg#:
70368
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Availability:
Back Ordered
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Solid Rear Sway Bar - 25.4mm
Substantially reduce understeer and body roll
Brand:
ES#:
2864583
Mfg#:
034-402-1000
Motorsport Front Sway Bar End Links Pair
Replace your sloppy rubber factory sway bar end links
Brand:
ES#:
2873007
Mfg#:
034-402-4018
Pro 5 R Air Intake System - Stage 2
Add real power that you can feel
Brand:
ES#:
3553217
Mfg#:
54-10322KT
Front Mount Intercooler Kit - For Big Turbo
Decrease heatsoak with this front mount intercooler
Brand:
ES#:
3142475
Mfg#:
CTSB6A4FMIC600BT
Front Mount Intercooler Kit - For K04
Decrease heatsoak with this front mount intercooler
Brand:
ES#:
2770215
Mfg#:
CTSB6FMICKIT
Billet Diverter Valve - Black
High-performance spring and piston design is both durable and a performer!
Brand:
ES#:
3183557
Mfg#:
034-145-5000-BLK
Silicone Turbo Inlet Hose
Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability!
10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3134120
Mfg#:
011204ECS02
Reinforced Silicone Breather Hose Kit
Upgrade from weaker rubber hoses
Brand:
ES#:
2864539
Mfg#:
034-101-3003
Ignition Wiring Replacement Harness - Audi B5/B6 A4 1.8T
Replace faulty coil pack wiring to keep your vehicle operating properly
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Brand:
ES#:
2996236
Mfg#:
012211ECS01
Reinforced Silicone Breather Hose Kit
Upgrade from weaker rubber hoses
Brand:
ES#:
2864540
Mfg#:
034-101-3004
Stage 1
Average gain of 38 horsepower and 69 lb-ft of torque on 91 Octane @ 18 PSI
Brand:
ES#:
3097325
Mfg#:
18T-20V-170-1
Maestro Tuning Suite - With Powertap Air Flash Tool
Ideal for shops and enthusiasts looking to recalibrate their vehicles for modified hardware
Brand:
ES#:
3148271
Mfg#:
ED-MT-A4-1.8TKT
Billet Aluminum Rear Main Seal
Permanent fix for that leaking rear main seal
Brand:
ES#:
4370260
Mfg#:
034-202-6003
Cat-Back Exhaust System - Non-Resonated
2.5" stainless steel with dual 100mm polished tips
Brand:
ES#:
2827430
Mfg#:
SSXAU306
Cat-Back Exhaust System - Resonated
2.5" stainless steel with dual 100mm polished tips
Brand:
ES#:
2827276
Mfg#:
SSXAU090
3" High Flow Catalytic Converter
complete drop-in upgrade will bolt up to stock/Stock Fit Turbo
Brand:
ES#:
2864552
Mfg#:
034-105-4021
CTS Turbo B6 A4 High-flow Cat Pipe
Seamlessly fits in place of your restrictive stock cat - Features 3″ stainless steel piping, smooth mandrel bends, and two 02 sensor bungs
Brand:
ES#:
4043061
Mfg#:
CTSEXHTP0002B6CA
Performance Stainless 2.5" Downpipe
High flow, stainless downpipe kit to be used with factory exhaust
Fits quattro 6-speed transmission models only - To be used with factory exhaust
Brand:
ES#:
3175279
Mfg#:
251130R
Longitudinal High Flow Exhaust Manifold
Stock fit high flow manifold
Brand:
ES#:
2864553
Mfg#:
034-105-9000
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Availability:
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Adjustable Short Throw Shifter - Audi B6/B7 A4/S4
Find your perfect setting with 3 steps of throw reduction
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Brand:
ES#:
3023144
Mfg#:
009198ECS01
Performance Engine Mount Kit - Audi B6/B7 A4
Includes upgraded RS4 motor mounts, ECS polyurethane snub mount and hardware
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Brand:
ES#:
2586485
Mfg#:
SM100004KT
Density Line Motor Mount Kit - Street Density
Void-free and fluid-free, eliminating the slop associated with the factory mounts
Brand:
ES#:
2893870
Mfg#:
034-509-0007KT
Street Density Line Transmission Mount
Increase performance and durability without sacrificing comfort
Brand:
ES#:
2952012
Mfg#:
034-509-4001SD