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.
TRICO
WINTER BLADE 15'

STANDARD IGN
PCV VALVE

STANDARD IGN
IGNITION SWITCH
STANDARD IGN
INTRMTR SNSR-SPEED

DELPHI
CTRL ARM & BALL JNT ASSEM

R/M BRAKES
BRAKE PAD SET

PACE INT'L
PREMIUM PRO SERIES 18GBPS BANDWIDTH

DELPHI
ABS SPEED SENSOR

DELPHI
CTRL ARM & BALL JNT ASSEM

DELPHI
STEERING TIE ROD ASSEMBLY

DELPHI
STEERING TIE ROD ASSEMBLY

STANDARD IGN
CRANKSHAFT SENSOR

DELPHI
CTRL ARM & BALL JNT ASSEM

DELPHI
VEHICLE SPEED SENSOR

FOUR SEASONS
BLOWER MOTOR

DELPHI
ENGINE CAMSHAFT POSITION SENSOR

FOUR SEASONS
BLEND ACTUATOR

DELPHI
ENGINE CRANKSHAFT POSITION SENSOR

DELPHI
SUSP CTRL ARM & BALL JNT ASSEM

STANDARD IGN
INTERMOTOR SWITCH - POWER

DELPHI
CTRL ARM & BALL JNT ASSEM
LEBRA
AUDI A4 96-99
FOUR SEASONS
HARNESS CONNECTOR
CARTER
FUEL PUMP TANK SEAL

DELPHI
SUSP CTRL ARM

DELPHI
SUSP CTRL ARM
R/M BRAKES
BRAKE PAD SET

STANDARD IGN
INTERMOTOR VALVE - CANIST

DELPHI
ENGINE CAMSHAFT POSITION SENSOR

DELPHI
SUSP CTRL ARM
DELPHI
SUSP CTRL ARM

R/M BRAKES
BRAKE PAD SET

R/M BRAKES
BRAKE PAD SET

DELPHI
CTRL ARM & BALL JNT ASSEM

R/M BRAKES
BRAKE PAD SET

R/M BRAKES
BRAKE PAD SET

GB REMAN INC
FUEL FEED LINE

DELPHI
CRANKSHAFT PULSE SENSOR

R/M BRAKES
BRAKE PAD SET

STANDARD IGN
MASS AIR FLOW SENSOR CONNECTOR

FOUR SEASONS
PULLEY

DELPHI
SUSPENSION COIL SPRING SEAT

COVERKING
DASHCV A4 SED POLY C96-01

STANDARD IGN
CAM/CRANK SENS

STANDARD IGN
CRANK SENS
FOUR SEASONS
BLOWERMOTOR RESISTOR

DELPHI
CTRL ARM

FOUR SEASONS
HEATER CORE

DELPHI
MAP SENSOR

FOUR SEASONS
HEATER CORE

DEA PRODUCTS
ENGINE MOUNT

DELPHI
LATERAL ARM

FOUR SEASONS
SYS MNT BINARY PRESS SW

DELPHI
TIE ROD ASSEMBLY
R/M BRAKES
FRICTION BRAKES

R/M BRAKES
BRAKE PAD SET
DELPHI
LATERAL ARM

R/M BRAKES
BRAKE PAD SET

FOUR SEASONS
RECIRCULATE ACTUATOR

STANDARD IGN
CAM/CRANK SENS
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