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 Parts
8164 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.

Bosch
IGNITION COIL

Stoptech
STANDARD BALL BEARING

Hella
CAMSHAFT POSITION-SENSOR

Mahle
AUDI VOLKSWAGEN 2.7L 2.8L 2000-2005

Bosch
COUPLER PLUG X 3/4-16 SAE F

Mahle
Valve Cover Gasket (Right) AUDI 3123CC 3.2L BKH 2005-2009

Stoptech
Stoptech PosiQuiet Ceramic Pads VAR
Mahle
Valve Cover Set AUDI VW AHA 2.8L 1997-1999

Mahle
General Gasket Set 07-15 Audi/VW 2.0L Turbocharged
Bosch
DISC BRAKE PADS

Denso
CABIN AIR FILTER

Bosch
FUEL FILTER

Bosch
SPARK PLUG

Victor Reinz
Engine Cylinder Head Gasket - 61-37435-20

Bosch
FITTING 90-ELBOW 37-FLARE (M)

Mahle
Valve Cover Set AUDI 2976CC 3.0L AVK BGN 2002-2006
Clevite
AUDI:9090 QUATTRO100100 QUATTROW/2771CCAAHV6 ENG.(9295)VALVE COVER VALVE
Clevite
AUDI / VW AHA 2.8L 19971999 VALVE COVER SET
Stoptech
Std Brake Rotor
Hella
BRAKE PAD SET DISC BRAKE
Victor Reinz
Engine Coolant Thermostat Seal - 41-76367-00

Dorman
TRAILING ARM BUSHING

Victor Reinz
Engine Crankshaft Seal - 81-23708-40

Victor Reinz
Engine Coolant Thermostat Housing Seal - 41-10434-00

Bosch
RETAINING RING

Bosch
MAF SENSOR

Stoptech
POSI-QUIET SEMI-METALLIC BRAKE PADS

Dorman
FLUID RESERVOIR

Dorman
SWAY BAR LINK

Mahle
AIR FILTER ELEMENT
Bosch
DISC BRAKE PADS

Stoptech
BRAKE HOSE

Bosch
BRAKE PADS

Bosch
IGNITION COIL

Bosch
DISC BRAKE ROTOR

Clevite
THERMAL PRODUCTS

PowerStop
POWERCLEAR WIPERBLADE SET

Mahle
HVAC Blower Motor Regulator

Bosch
DISC BRAKE PADS
Clevite
VW JETTA SCIROCCO RABBIT GOLF GTI W/O 16 VALVE 1990 CABRIO 19952002 MAHLE

Bosch
DISC BRAKE PADS
Mahle
Audi/VW 2.0L 2010-2018 RANKCASE SEPARATOR

Victor Reinz
Exhaust Pipe Flange Gasket - 71-40868-00

Victor Reinz
Engine Valve Cover Gasket - 71-40488-00

Victor Reinz
Vacuum Pump Gasket - 71-37523-00

Bosch
CABIN AIR FILTER

Mahle
AUDI 3123cc 3.2L BKH 2005-2009
Mahle
Sleeve Assembly Ring Set PISTON RING SET-LV-Piston Ring Set-PISTON RING SET

Mahle
~(0 lbs. 10X8X0)~ AUDI 2.7L 3.0L 2002-2006
Mahle
Valve Cover Set AUDI 3123CC 3.2L BKH 2005-2009

Mahle
Audi Volkswagen 1984cc 2.0L Gasoline Turbocharged 2008-2014
Clevite
AUDI (7106) VOLKSWAGEN (9609) MAHLE OIL FILTER

Victor Reinz
Exhaust Pipe Flange Gasket - 71-40926-00
Victor Reinz
Exhaust Manifold Gasket - 71-37422-00
Hella
LAMBDA PROBE

Dorman
BREATHER HOSE
Mahle
AUDI 2.8L 3.0L3.2L 2008-2012
Bosch
FORD CAM HOLDER

Stoptech
Stoptech PQ Pro Brake Pads Rear Audi A4 A4 allroad A4 Quattro A5 A5 Quattro allroad Q5 2008 -

Hella
WARNING CONTACT BRAKE PAD WEAR
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