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.

Walker Products Inc. - Sensors
OXYGEN SENSOR
Extreme Dimensions
2006-2008 Audi A4 S4 B7 Carbon AF-1 Hood ( CFP ) - 1 Piece

MOTORAD
ENGINE CRANKSHAFT POSITION SENSOR
Walker Products Inc. - Sensors
ENGINE VARIABLE VALVE TIMING (VVT)

STANDARD IGN
INTERMOTOR SWITCH - POWER
Walker Products Inc. - Sensors
OXYGEN SENSOR

Race Sport
COLORSMART 4LED GLOW POD BLACK KITSMARTPHONE CONTROLLED W/BRAIN BOX IP68 12V W

WAGNER BRAKE
BRAKE ROTOR

MOTORAD
THERMOSTAT

DAYCO HYDRAULIC
TENSIONER
STANDARD IGN
PARKING ASSIST SENSOR

STANDARD IGN
RELAY

VALEO
V-RF7 LED LIGHT BAR SPOT KIT

Walker Products Inc. - Sensors
OXYGEN SENSOR

Extreme Dimensions
2009-2012 Audi A4 B8 Duraflex Dante Rear Wing Spoiler - 1 Piece

TRAKMOTIVE
NEW CV AXLE

TRAKMOTIVE
NEW CV AXLE
TIMKEN
SL260529;A/AM-SRC SEAL

Walker Products Inc. - Sensors
OXYGEN SENSOR

Extreme Dimensions
2006-2008 Audi A4 S4 B7 4DR Duraflex RS4 Wide Body Front Fenders - 2 Piece

Extreme Dimensions
2008-2015 Lexus LX570 Urethane AF-1 Wide Body Door Caps ( PUR-RIM ) - 4 Piece (S)
Extreme Dimensions
2006-2008 Audi A4 B7 Carbon Creations DTM Look Front Under Spoiler Air Dam Lip Splitter - 1 Piece
WOLF PROD.
LE AUDI A4
Extreme Dimensions
2006-2008 Audi A4 B7 4DR Duraflex DTM Look Rear Bumper Cover - 1 Piece

MOTORAD
ENGINE CRANKSHAFT POSITION SENSOR
Extreme Dimensions
2006-2008 Audi A4 S4 B7 Carbon Creations OEM Look Hood - 1 Piece

Walker Products Inc. - Sensors
OXYGEN SENSOR
Extreme Dimensions
2006-2008 Audi A4 S4 B7 Duraflex RS4 Wide Body Front Bumper Cover - 1 Piece

Walker Products Inc. - Sensors
MASS AIR FLOW SENSOR

WAGNER BRAKE
CERAMIC BRAKE PADS
Extreme Dimensions
2020-2023 Audi A4 S4 Duraflex Elver Front Lip Spoiler Air Dam - 1 Piece

WAGNER BRAKE
H.I.D REPLACEMENT BULB

Extreme Dimensions
2006-2008 Audi A4 B7 4DR Duraflex DTM Look Body Kit - 4 Piece - Includes DTM Look Front Bumper Cover (105035) DTM Look Rear Bumper Cover (105037) R-1 Side Skirts Rocker Panels (100290)

TRAKMOTIVE
NEW CV AXLE

WAGNER BRAKE
CERAMIC DISC PAD SET
STANDARD IGN
INTERMOTOR VARIABLE VALVE TIMING SO

TIMKEN
CLUTCH RELEASE BEARING

STANDARD IGN
AIR CHARGE TEMPERATURE SENSOR

DEA PRODUCTS
TRANSMISSION MOUNT
R/M BRAKES
BRAKE PAD SET

FOUR SEASONS
PRESSURE SWITCH

DELPHI
CTRL ARM & BALL JNT ASSEM

R/M BRAKES
BRAKE PAD SET
BLACK HORSE
2009-2016 AUDI A4 TRIMS-PILLAR POST

DELPHI
CTRL ARM & BALL JNT ASSEM

DELPHI
CTRL ARM & BALL JNT ASSEM
LEBRA
MASK AUDI A4 96-99

DEA PRODUCTS
TRANSMISSION MOUNT
A1 REMFG INC
AUDI/VOLKSWAGEN 02-96
DELPHI
CONTROL ARM AND BALL JOINT ASSEMBLY

COVERKING
CARCVR A4 SED STORMS00-04

LSD (Lambo Style Doors)
LAMBO DOORS 95+ AUDI A4
BLACK HORSE
PILLAR POST TRIMS

DELPHI
SUSPENSION CONTROL ARM AND BALL JOI

TYC
0912 AD A.4/S.4 SDN/0911 A.6/S.6 F.L RH

TYC
1316 AD A4 W/O CURVE LIGHT HID H.L LH

TYC
LH HEADLAMP ASSY COMPOSITE HID AUDI A4 20172019

SPEC D TUNING
96-99 A4 HALO LED PROJECT

TYC
2122 TY COROLLA HYBRID AT 1R PA RADIATOR

TYC
CAPA 1217 AD A5/S5 W/O CURVE LTG HID HEADLIGHT ASSY RH
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