QUATTRO MEETS PRACTICALITY
B5 through B9 — Audi's compact sedan with available Quattro AWD and turbo power.
Audi A4 HERITAGE
THE QUATTRO COMPACT
MOTORMIA A4 builds span B5 1.8T stage-3 tuners, B7 RS4 V8 swap projects, B8/B9 ECU-tuned dailies, and the S4 supercharged V6 generation. Many parts cross-fit with VW MK6/MK7 platforms.
Audi A4 ON MOTORMIA
THE NUMBERS
CATEGORIES
Top product categories for the Audi A4
BRANDS
Top brands for Audi A4 builds
READY TO BUILD YOUR AUDI A4?
Pick your year and trim to shop verified-fit Audi A4 parts.
Shop all Audi A4 parts →Verified Fitment
Audi A4 Category:suspension and components Parts
659 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.
Dorman
CONTROL ARM

Megan Racing
Megan Audi A4 A5 17 Rear Sway Bar (25.4mm)

Dorman
LATERAL ARM
Megan Racing
Megan Audi A4 A5 17 Front Sway Bar (32mm)

Dorman
CONTROL ARM

Megan Racing
Megan Audi A4 09-13 A5 08-13 S5 08-11 Front Sway Bar 30mm 3pcs

Megan Racing
Megan Audi A4 A4 S4 A5 S5 B8 8K 08-14 Front Lower Arm Front 2pcs
Dorman
CONTROL ARM

Megan Racing
Megan Audi A4 A5 17 Lowering Springs (EXC Wagon)

Megan Racing
Megan Lowering Springs A4 96-01 FWD 25 LBs Spring Rate: Front K1-146 K2-224 Rear K1-65 K2-168

Dorman
CONTROL ARM

SPL PARTS INC.
SPL Parts 09-16 Audi B8 & B8.5 A4/A5/S4/S5 Front Endlinks

Dorman
CONTROL ARM BALL JNT

Megan Racing
Megan Lowering Springs Audi A4 02-06 FWD 31 LBs Spring Rate: Front K1-202 K2-262 Rear K1-353 K2-353
Dorman
CONTROL ARM
Dorman
CONTROL ARM W/ BALL JOINT
Dorman
CONTROL ARM W/ BALL JOINT

BC Racing
BC Racing BR Series Coilovers For 17- Audi A4/S4 (48.5mm Front Strut) With 10kg/8kg Spring Rates
D2 Racing
RS Coilovers w Front Air Cups Gold Control System #D-MI-10-VACF-20 D2-ACK02

Dorman
CONTROL ARM

Dorman
CONTROL ARM

Dorman
CONTROL ARM
D2 Racing
AIR SUSP KIT S4 (AWD) 09-
D2 Racing
AIR SUSP KIT S4 (AWD) 09-

H&R
H R Springs Street Perf. Coil Over Kit
H&R
H&R 2025 Audi S5 Sedan B10 AWD Sport Springs
BC Racing
BC Racing Coilover BR 96-01 A4 FWD

D2 Racing
AIR STRUTS A4 (FWD) B9 WA

D2 Racing
AIR SUSP KIT S4 (AWD) 09-

D2 Racing
D2 COILOVERS S4 (AWD) 09-

D2 Racing
AIR SUSP KIT A4 (FWD) B8

D2 Racing
D2 COILOVERS A4 (FWD) B8

D2 Racing
RS Coilovers w Front Air Cups Gold Control System #D-AU-40-VACF-20 D2-ACK02

Eibach
Eibach PRO-KIT Set of 4 Springs Fits AUDI A4 Quattro 2002 to 2008
Bilstein
AUDI A4 QUATTRO SPORT;F;B8

Eibach
Eibach PRO-KIT Set of 4 Springs Fits AUDI S4 2000 to 2002

D2 Racing
AIR SUSP KIT S4 (AWD) 09-

Eibach
Eibach PRO-KIT Set of 4 Springs Fits AUDI A4 Quattro 2009 to 2016

D2 Racing
AIR SUSP KIT A4 (FWD) B9

D2 Racing
AIR STRUTS S4 (AWD) 03-08

D2 Racing
D2 COILOVERS S4 (AWD) 03-

Eibach
Eibach PRO-KIT Set of 4 Springs Fits AUDI A4 Quattro 2002 to 2008

Dorman
CONTROL ARM

Dorman
CONTROL ARM
D2 Racing
AIR SUSP KIT RS6 4B 02-04

D2 Racing
AIR SUSP KIT A4 (FWD) B8
D2 Racing
AIR SUSP KIT S4 (AWD) 03-

D2 Racing
AIR SUSP KIT S4 (AWD) 03-

BC Racing
BC Racing Coilover BR 96-01 A4 AWD
BC Racing
BC Racing Coilover BR 08- A4/S5

BC Racing
BC Racing Coilovers DS Series 96-01 Audi A4 FWD

Dorman
SUSPENSION CONTROL ARM AND BALL JOI
D2 Racing
AIR SUSP KIT S4 (AWD) 03-

D2 Racing
AIR STRUTS S4 (AWD) 09-16

D2 Racing
AIR SUSP KIT A4 (FWD) B8

D2 Racing
AIR SUSP KIT A4 (FWD) B8

Dorman
LATERAL ARM

Dorman
TRACK BAR
D2 Racing
AIR SUSP KIT A6 C5 (AWD)

D2 Racing
AIR SUSP KIT A4 (FWD) B9
FAQ
Frequently Asked Questions About the Audi A4
What are the best aftermarket parts brands for the Audi A4?
The top brands MOTORMIA owners trust for Audi A4 builds are EBC, PowerStop, H&R, Bilstein, and Magnaflow. The catalog carries 3,135 parts that fit the A4. Use the fitment selector to filter to your specific year and trim, then browse by category or brand.
What's the best trim or sub-model of the Audi A4 to modify?
The most-modified A4 trims are S4 (especially B5 / B7 / B8 / B9 supercharged). These trims typically came with performance-focused suspension, brakes, and engine options that give a higher starting point. That said, the A4's engine family (1.8T, 2.0T EA888, 3.0T supercharged (S4), 4.2 V8 (B7 RS4)) shares aftermarket across most trims, so base-trim builds with the right bolt-ons can match higher trims on power.
What's the typical mod path for a Audi A4?
For most Audi A4 builds, the recommended modification order is: ECU tune → intake → downpipe → suspension → turbo upgrade. This sequence stages upgrades so each mod supports the next — tuning unlocks gains from intake/exhaust, suspension keeps the added power planted. MOTORMIA member builds let you see exact part lists for Audi A4 builds at every power level.
How does the Audi A4 aftermarket compare to the BMW 3 Series?
The Audi A4 is the Quattro AWD compact sedan with the EA888 2.0T platform shared across Audi/VW. On MOTORMIA, 3,135 parts fit the A4 across 3,000+ active member builds, with an average part MSRP of $711. The decision usually comes down to which platform you own — both have full bolt-on catalogs.
Will any Audi A4 part fit my year and trim?
Not always. The Audi A4 has had multiple generations and engine changes (e.g., 1.8T, 2.0T EA888, 3.0T supercharged (S4), 4.2 V8 (B7 RS4)), and parts are generation- and trim-specific. MOTORMIA's catalog uses verified fitment data — every product page shows exactly which years and submodels of the A4 a part fits. Use the fitment selector at the top of any page to pre-filter to your build.
Does MOTORMIA offer returns on Audi A4 parts?
Yes. Most Audi A4 parts on MOTORMIA are eligible for our 30-day return policy provided they're unused, uninstalled, and in original packaging. Special-order parts are flagged with a "Special Order" badge on the product page. Manufacturer warranties are processed through MOTORMIA on your behalf.
MOTORMIA APP
Build your Audi A4 with Mia
Personalized Audi A4 mod recommendations, verified fitment from real A4 owners, and a garage that tracks every part on your build.
- Mod recommendations tuned to your A4 year, trim, and submodel
- Verified fitment data from 3,000+ Audi A4 member builds
- Performance gain estimates based on real-world results
- Save your garage and track every part you've installed