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.

EBC
EBC 91-95 Alfa Romeo 164 2.0 Turbo Greenstuff Rear Brake Pads

Rhino-Rack USA
Rhino-Rack 2500 Fitting Kit - 4 Pads/4 Clamps

Thule
Thule WingBar Edge 95cm Roof Bar (1-Pack) - Silver

Hella
Hella Optilux H7 12V/55W XY Xenon Yellow Bulb

WeatherTech
WeatherTech 02-08 Audi A4 Sedan Cargo Liners - Black

Thule
Thule AirScreen XT Roof Rack Wind Fairing L - 44in. (Black)

WeatherTech
WeatherTech 2017+ Audi A4 Allroad Wagon Cargo Liners w/ Bumper Protector - Grey

WeatherTech
WeatherTech 07-12 Acura MDX / 02-06 Audi S4 / 10-15 Chevy Silverado 1500 Tan Rear Seat Protector

WeatherTech
WeatherTech 08-16 Audi A5/S5/RS5 Coupe Cargo Liner w/ Bumper Protector - Black

WeatherTech
WeatherTech 09-12 Audi A4 / 13-16 Audi Allroad Cargo Liners w/ Bumper Protector - Grey

WeatherTech
WeatherTech 59.75in W x 19in Depth x 25in H Seat Protector - Cocoa

Motul
Motul 5L Specific 508 0W20 Oil - Acea A1/B1 / VW 508.00/509.00 / Porsche C20

WeatherTech
WeatherTech 07-12 Acura MDX / 02-06 Audi S4 / 10-15 Chevy Silverado 1500 Gray Rear Seat Protector

ACL
ACL VW/Audi 1781cc/1984cc 0.50 Oversized High Performance Rod Bearing Set

ACL
ACL VW/Audi 1781cc/1984cc Standard Size High Performance w/ Extra Oil Clearance Rod Bearing Set

NGK
NGK Volkswagen Cabrio 1999-1996 Direct Fit Oxygen Sensor

ACL
ACL VW/Audi 1781cc/1984cc 0.25 Oversized High Performance Rod Bearing Set

ACL
ACL VW/Audi 1781cc/1984cc 0.025 Oversized High Performance Rod Bearing Set

Seibon
Seibon 96-01 Audi A4 ER Carbon Fiber Hood

aFe
afe Pedal 2 Metal Throttle Enhancer Various Audi/VW/Porsche/Cars/SUVs 04-25

aFe
aFe POWER Cabin Air Filter Various Audi & Porsche 17-24

aFe
aFe MagnumFLOW Air Filters OER P5R A/F P5R Audi A4 09 V6-3.2L; A4 09-12 V6-3.0L
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