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:exterior components Parts
2182 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.

Dana
HEAD GASKET SET

Dorman
THIRD BRAKE LIGHT
Dorman
THIRD BRAKE LAMP

Dorman
WATER PIPE

Dorman
CONTROL ARM BUSHING
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA

Arc Lighting
Xtreme Series D5 HID Replacement LED Bulb Kit (2 EA)
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
AUDI CAR BRA
Covercraft
COLGAN ORGL FRONT END BRA

Dana
HEAD GASKET SET
Dorman
ELECTRIC PARKING BRAKE MOTOR
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA

Dorman
WINDOW REGULATOR
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA

Dorman
TIE ROD END

Dorman
TIE ROD END - OUTER

Dorman
REGULATOR ONLY POWER
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA
Dorman
HID CONTROL MODULE
Dorman
ENGINE COOLANT THERMOSTAT HOUSING A
Covercraft
COLGAN ORGL FRONT END BRA
Dorman
TIE ROD ASSY
Covercraft
COLGAN ORGL FRONT END BRA

Dorman
THERMOSTAT HOUSING

Covercraft
COLGAN ORGL FRONT END BRA
Covercraft
COLGAN ORGL FRONT END BRA

Covercraft
LLOYD MATS ULTIMAT OFFICIAL LICENSE

Dorman
CAM POSITION SENSOR
Covercraft
COLGAN MIRROR BRA
Covercraft
COLGAN ORGL FRONT END BRA
Brembo
DISC BRAKE ROTOR
Dorman
ENGINE OIL PAN
Dorman
WINDSHIELD WIPER TRANSMISSION ASSEM

Dorman
BRAKE HYDRAULIC HOSE
Covercraft
COLGAN ORGL FRONT END BRA

Brembo
DISC BRAKE ROTOR

Planted Technology
Aud A4/S4 B8 Chassis 0

Planted Technology
Aud A4/S4 B7 Chassis 0

Dorman
DOOR LOCK ACTUATOR

Dorman
BRAKE HYDRAULIC HOSE

Dorman
HIGH INTENSITY DISCHARGE CONTROL MO

Dorman
REGULATOR ONLY POWER

Hella
WATER PUMP

Victor Reinz
Engine Crankcase Cover Gasket Set - 08-31956-01
ANZO
0608 A4 PROJECTOR HEADLIGHTS HALO G2 BLACK CLEAR
HKS
HKS Audi A4(1997-2006) Audi A3(2006) Volkswagen Beetle(1998-2006) HKS Super Hybrid Filters Super H

ANZO
0508 AUDI A4/S4/RS4 PROJECTOR BLACK CLEAR(R8 LED STYLE)HEADLIGHTS DRIVE/PASS
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