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.

034Motorsport
VALVE,N75,058 906 283E,STOCK

034Motorsport
HOSE,SIL,BRTHR B5 LOWERLOWER

034Motorsport
HOSE SET,A4 1.8T LATE BREATHE

034Motorsport
Rebuild Kit, Density Adj C/A,

034Motorsport
Ctrl Arm Kit, Full CC B8 Early

034Motorsport
Ctrl Arm Kit, Full CC B8 Late

034Motorsport
CONTROL ARM KIT,UP ADJ,B8 CAM

034Motorsport
Ctrl Arms, D+, Frt, Up, B9 Q5/

034Motorsport
Hdwre Kit, Lw CA B8 M12 Hybrid

034Motorsport
SPACER,PHENOLIC,2.7T SMALL2.7

034Motorsport
Ctrl Arm Kit, Lwr,Stl Up,B5 C5

034Motorsport
CONTROL ARM KIT,UP ADJ,B8 TRA

034Motorsport
Ign Coil, 6pk, Ylw, MQB Style

034Motorsport
Hose, Turbo Inlet, A4, TT MAF

034Motorsport
ADAPTER,FUEL PUMP,39MM IN TAN

034Motorsport
INJECTOR ADAPTER,RS4 6INJECTO

034Motorsport
X34, Air Scoop, Lrg IC, B9 A4

034Motorsport
Wheel Spacer Set, 10mm-10mm, 6

034Motorsport
Mount,Trans,SD,A4 w- V6 H-WARE

034Motorsport
Stud-Nut, 65mm, Ball Seat, 20

034Motorsport
Air Filter, 034, 5.0" Inlet

Sun Coast Converters
SUNCOAST D Clutch Hub 35570-70K

NGK
NGK VWC029 WIRE SET CL5 Ignition Wire Set VWC029

Mahle
Mahle HVAC Blower Motor AB114000S

NGK
NGK U2010 CL11 Ignition Coil U2010

Mahle
Mahle A/C Evaporator Core AE205000P

PowerStop
Power Stop AUTOSPECIALTY BRAKE KIT Audi A4 allroad 2020-25 Audi A4 Quattro 2020-25 Audi A5 Quattro 2020-24 Audi A5 Sportback 2020-25 KOE8652
Mahle
Mahle Engine Piston Ring Set 42224CP.020

WeatherTech
WeatherTech Grey Front Rear FloorLiner HP Fits -21-25 Audi 469371-469072IM

WeatherTech
WeatherTech Tan Front Rear FloorLiner HP Fits -21-25 Audi 459371-459072IM

Putco
Putco Nitro-Lux - H11 / H9 / H8 - (Pair)

WeatherTech
WeatherTech Cocoa Front Rear FloorLiner HP Fits -21-25 Audi 479371-479072IM

Maxzone Vehicle Lighting Corp
CAPA AD A4 SDN 1719 TAILLAMP ASSY OTR RH
Maxzone Vehicle Lighting Corp
CAPA AD A4 ALROD 1316 HEADLIGHT ASSY W/O CURVE LIGHTING RH

Maxzone Vehicle Lighting Corp
CAPA AD A4 5/1216 HEADLIGHT ASSY HALOGEN LH

DFC
DFC 08-25 Audi S5 Rear Right Drilled Geoperformance Rotor
DFC
DFC 08-25 Audi SQ5 Sportback Rear Right Drilled & Slotted Black Brake Rotor

DFC
DFC 08-25 Audi A6 ALLROAD Rear Left Drilled & Slotted Black Brake Rotor

DFC
DFC 97-06 Audi A6 (USA/Canada) Front GeoSPEC Coated Rotor
DFC
DFC 97-06 Audi A8 Front Right Drilled & Slotted Silver Brake Rotor
DFC
DFC 00-09 Audi A4 (USA/Canada) Rear Right Drilled & Slotted Silver Brake Rotor
DFC
R1 08-17 Audi A4 allroad Rear Brake Rotor Set w/Ceramic Pads and Hardware
DFC
DFC 17-19 Audi A4 Rear-R Silver Zinc Coated Premium Caliper

DFC
DFC 96-97 Audi A4 Rear-R Silver Zinc Coated Premium Caliper

DFC
DFC 16-25 Audi A4 Quattro Front Brake Rotor

DFC
DFC 08-12 Audi A5 Front Brake Rotor

DFC
R1 08-17 Audi A5 Quattro Rear GeoMET Brake Rotor Set w/Euro Ceramic Pads and Hardware
DFC
DFC 08-17 Audi ALLROAD Front-L Silver Zinc Coated Premium Caliper
DFC
DFC 11-16 Audi A4 Quattro Front 5000 Advanced Ceramic Brake Pads
DFC
DFC 99-05 Audi A8 Brake Master Cylinder
DFC
DFC 08-12 Audi A5 Front Left Drilled & Slotted Geoperformance Rotor

DFC
DFC 08-25 Audi S5 Rear GeoSPEC Coated Rotor

DFC
DFC 08-12 Audi A4 (USA/Canada) Front GeoSPEC Coated Rotor
DFC
DFC 08-25 Audi A5 Sportback Front Right Drilled & Slotted Silver Brake Rotor

DFC
DFC 08-25 Audi Q5 Sportback Rear Right Drilled & Slotted Silver Brake Rotor

DFC
DFC 11-17 Audi A4 (USA/Canada) Front Left Drilled & Slotted Silver Brake Rotor

DFC
DFC 16-25 Audi A4 (Mexico) Front Euro 5000 Ceramic Brake Pads and Hardware Kit
DFC
DFC 16-23 Audi A4 Allroad Front Right Dimpled & Slotted Silver Brake Rotor

DFC
DFC 96-05 Audi A6 Quattro Front-R Premium Caliper - Silver Zinc Coated
DFC
DFC 17-19 Audi A4 Rear-L Silver Zinc Coated Premium Caliper
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