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.

Dorman
PRESSURE SENSOR

Dana
ENGINE HEAD GASKET

Dorman
TIE ROD END - OUTER

Dana
ENGINE HEAD GASKET

WIX
TRANSMISSION FILTER MIN ORDER QTY1

Brembo
AUDI A4 20202020 A4 ALLROAD 20202024 A4 QUATTRO 20202024 DISC BRAKE PAD SE

Dorman
STABILIZER BAR LINK KIT

Dorman
THERMOSTAT HOUSING

Dorman
THERMOSTAT HOUSING
Dorman
STABILIZER BAR LINK
Dorman
STABILIZER BAR LINK KIT

Brembo
AUDI A4 20172020 A4 ALLROAD 20172024 A4 QUATTRO 20172024 DISC BRAKE ROTOR

Dorman
ANTI-LOCK BRAKE SYSTEM TONE RING

Brembo
DISC BRAKE ROTOR
Cloyes Gear & Products
TIMING BELT
Cloyes Gear & Products
TIMING BELT

Dorman
STABILIZER BAR LINK

Dorman
STABILIZER BAR LINK KIT

Dorman
STABILIZER BAR LINK KIT
Dorman
STABILIZER BAR LINK KIT

Dorman
STABILIZER BAR LINK KIT
Dorman
STABILIZER BAR LINK KIT
Dorman
STABILIZER BAR LINK
Dorman
STABILIZER BAR LINK KIT
Dorman
STABILIZER BAR LINK KIT

Clevite
AUDI 2976CC 3.0L AVK BGN 20022006 CYLINDER HEAD GASKET
Bosch
PIVOT 1504A HANDLE

Mahle
BEHR Engine Coolant Thermostat

Dorman
CONTROL ARM

Mahle
Engine Connecting Rod Bearing Set 05-88 VKS 1.8L-2.0L CB-1426A(4)
Dorman
FLUID RESERVOIR

Clevite
AUDI 1.8L AEB 19972000 (M11 X 1.5MM X 96MM #9 TORX) CYLINDER HEAD BOLTS

Clevite
AUDI / VOLKSWAGEN 2.7L 2.8L 20002005 TIMING COVER SET

Hella
DISC BRAKE ROTOR
SPYDER
0417 AUDI COMPLETE LICENSE PLATE BULB ASSEMBLY REPLACEMENT WHITE 5500K 1 PAIR

Stoptech
Stoptech PQ Pro Brake Pads Rear Audi Bentley Volkswagen A6 Quattro A8 Quattro Continental Phaet

Hella
WATER PUMP HEADLIGHT ... FOR SEAT/

Hella
LAMBDA PROBE
Mahle
~(0.8 lbs. 24X8X0)~ Cylinder Head Gasket 13-17 AUDI/VW 1.8L/2.0L CPLACPPACNTCCYFBCYNBCPKACPRACXBACXBB

Hella
BRAKE PAD SET DISC BRAKE

Mahle
HVAC Pressure Switch

Hella
LAMBDA SENSOR 6PA

Denso
DOUBLE PLATINUM

Mahle
BEHR ThermostatInsert Audi Volkswagen 2.0L 1984cc Turbocharged 2009-2014
Bosch
DISC BRAKE PADS

Stoptech
GCX ROTOR WITH FULL COATING AND HIG
Mahle
AUDI 1.8L AEB 1997-2000 (M11 X 1.5mm X 96mm #9 Torx)

Dorman
BREATHER TUBE

Victor Reinz
Engine Cylinder Head Gasket - 61-31875-00

Hella
WATER PUMP

Stoptech
Stoptech PQ Pro Brake Pads Rear Alfa Romeo Audi 100 100 Quattro 164 200 200 Quattro 4000 Quatt

NGK
ENGINE CAMSHAFT POSITION SENSOR

Bosch
DISC BRAKE PADS

Dorman
CRANK CASE BREATHER
Dorman
CONTROL ARM

Hella
DISC BRAKE ROTOR

Victor Reinz
Engine Crankshaft Seal Kit - 81-90010-00

Clevite
TURBOCHARGERS

Dorman
BREATHER TUBE

Clevite
EXPANSION VALVE AND ORIFICE TUBE
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