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.

Clevite
VOLKSWAGEN / AUDI 1984CC 2.0L CCTA CBFA CAED 20082014 REAR MAIN SEAL
Clevite
TURBOCHARGERS

Stoptech
Stoptech PQ Pro Brake Pads Front Audi Volkswagen A4 A4 Quattro Passat S3 1996 - 2000

Mahle
~(0.7 lbs. 6X4X4)~ ThermostatIntegral 05-09 Audi 3.2L V6
Bosch
DISC BRAKE PADS

Clevite
FILTER-DRIER AND ACCUMULATOR
Gates
Gates Power Steering Repair Kit

Gates
COOLANT HOSE
Stoptech
BRAKE HOSE
Clevite
TIMING

Mahle
~(1.8 lbs. 5X3X2)~ VW-Pass 1.8L AWP AWV and APH 1999-2006 (M10 X 1.5 X 115mm 6 point #9 torx)

Bosch
IGNITION COIL

Mahle
AUDI VOLKSWAGEN 2.7L 2.8L 2000-2005

Bosch
COUPLER PLUG X 3/4-16 SAE F

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

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

Bosch
FITTING 90-ELBOW 37-FLARE (M)
Clevite
AUDI / VW AHA 2.8L 19971999 VALVE COVER SET
Stoptech
Std Brake Rotor
Hella
BRAKE PAD SET DISC BRAKE

Dorman
TRAILING ARM BUSHING

Bosch
MAF SENSOR

Stoptech
POSI-QUIET SEMI-METALLIC BRAKE PADS

Dorman
FLUID RESERVOIR
Bosch
DISC BRAKE PADS

Stoptech
BRAKE HOSE

PowerStop
POWERCLEAR WIPERBLADE SET

Mahle
HVAC Blower Motor Regulator

Bosch
DISC BRAKE PADS

Victor Reinz
Engine Valve Cover Gasket - 71-40488-00
Mahle
Valve Cover Set AUDI 3123CC 3.2L BKH 2005-2009
Hella
LAMBDA PROBE
Bosch
FORD CAM HOLDER

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

Mahle
A/C Receiver Drier
Mahle
A/C Receiver Drier

Hella
CRANKSHAFT-SENSOR

Dorman
CONTROL ARM
Stoptech
SEMI-LOADED CALIPER

Dorman
IDLER PULLEY

Bosch
BLEEDER VALVE

Bosch
DISC BRAKE PADS
Stoptech
PREMIUM TIE ROD END
Victor Reinz
Engine Valve Cover Gasket Set - 15-10116-01

Gates
Gates Power Steering Pressure Line Hose Assembly

Hella
SENSOR PARKING ASSIST
Stoptech
PREMIUM SWAY BAR LINK

Hella
IGNITION COIL

NGK
ENGINE CRANKSHAFT POSITION SENSOR

NGK
ENGINE CRANKSHAFT POSITION SENSOR

Mahle
TURBOCHARGER MOUNTING GASKET SET
Clevite
AUDI 2995CC 3.0L 3123CC 3.2L 2008 VALVE COVER SET
Mahle
Cylinder Head Gasket VW-Pass 2771cc 2.8L ATQ 1998-2005
Clevite
AUDI 3123CC 3.2L BKH 20052009 VALVE COVER SET

Clevite
AUDI A4 2.0L TDI 3.2L A6 3.2L 4.2L A8 R8 RS4 S4 4.2L S6 & S8 5.2L MAHLE

Hella
SENSOR PARKING ASSIST

Clevite
AUDI VW APPLICATIONS W/ ZF 5HP19FL TRANSMISSION MAHLE OIL FILTER

Bosch
WIPER BLADE

Bosch
DISC BRAKE PADS
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