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 Parts
8164 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.

DELPHI
FUEL PUMP MODULE ASSEM

BOWER BCA
BRNG
BOWER BCA
BALL BEARING

DELPHI
CTRL ARM & BALL JNT ASSEM
FOUR SEASONS
REMAN NIPPONDENSO 6SEU14C
FOUR SEASONS
REMAN NIPPONDENSO 7SB16C

DELPHI
MAF SENSOR - PROBE ONLY

CARTER
FUEL PUMP MODULE ASSEMBLY

FOUR SEASONS
THERMOSTAT HOUSING
FOUR SEASONS
BLOWER MOTOR

R/M BRAKES
BRAKE PAD SET

STANDARD IGN
INTERMOTOR MANIFOLD ABSOLUTE PRESSU

R/M BRAKES
DISC BRAKE PAD
FOUR SEASONS
7SB16C COMPRESSOR
A1 REMFG INC
FORD FAMILY 96 TO 98
STANDARD IGN
ACCELERATOR PEDAL SENSOR
FOUR SEASONS
OUTLET / HOUSING KIT

FOUR SEASONS
RAD / COND FAN ASSY.

DELPHI
MAF SENSOR - PROBE ONLY

R/M BRAKES
NS DISC PAD

DELPHI
MAF SENSOR - PROBE ONLY

DEA PRODUCTS
ENGINE MOUNT
BLACK HORSE
2009-2016 AUDI A4 TRIMS-PILLAR POST

DELPHI
FUEL PUMP & STRAINER SET

FOUR SEASONS
RAD / COND FAN ASSY.

DELPHI
FUEL PUMP MODULE ASSEM

STANDARD IGN
ENGINE OIL COOLER

FOUR SEASONS
FLANGED VENTED CCW BLOWER

DELPHI
CTRL ARM & BALL JNT ASSEM

FOUR SEASONS
RADIATOR FAN MOTOR ASSEMB
STANDARD IGN
NEUTRAL/BACKUP SWITCH -02

SAVINI
SVF05 22X9.0 5X112 11 66.6 Z

DEA PRODUCTS
ENGINE MOUNT

R/M BRAKES
BRAKE PAD SET
FOUR SEASONS
COOLANT PUMP
DELPHI
SUSPENSION CONTROL ARM

FOUR SEASONS
CONDENSER /PARALLEL

FOUR SEASONS
REMAN COMPRESSOR
STANDARD IGN
INTERMOTOR FUEL VAPOR CAN
R/M BRAKES
BRAKE PAD SET

FOUR SEASONS
NEW COMPRESSOR

DELPHI
OXYGEN SENSOR

FOUR SEASONS
REMAN COMPRESSOR

DELPHI
OXYGEN SENSOR

STANDARD IGN
TEMP. SENS

FOUR SEASONS
CONDENSER /PARALLEL

FOUR SEASONS
PARALLEL FLOW CONDENSER
DELPHI
SUSP KIT

DELPHI
SUSP KIT
ATK ENGINES
VW 1.8T 01-06 CYL HEAD

DELPHI
CTRL ARM & BALL JNT ASSEM

DELPHI
OXYGEN SENSOR
DELPHI
SUSP KIT
CARTER
DIRECT INJECTION FUEL PUMP

DELPHI
MAF SENSOR - PROBE ONLY

DELPHI
OXYGEN SENSOR

FOUR SEASONS
REMAN YORK-DIESEL KIKI-ZE

DEA PRODUCTS
ENGINE MOUNT

STANDARD IGN
MASS AIR FLOW
LEBRA
MASK AUDI A4 96-99
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