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.
TYC
CAPA 0912 AD A.4/S.4 HALGN HEADLAMP ASSY RH
A1 REMFG INC
IMPORT ECC

SPEC D TUNING
96-99 A4 HALO LED PROJECT
Wheel Pros, LLC
20X9 PNT 5X112 28 66.56

APR Tuning
KIT COIL PLUG MS100203 Z1003100 4x GREY

A1 REMFG INC
IMP UNLOADED CALIPERS

TYC
STARTER MOTOR VW PASSAT 1.8L L4 0405

TYC
STARTER MOTOR VW PASSAT 2.8L V6 0005
Tong Yang Industry Co.
SELTS GRILLE PNTDBLK W/CHRM MLDG (S/EX/NIGHTFALL EDITION/SX)(OTN) KIA SELTOS 20
A1 REMFG INC
MASS AIRFLOW SENSOR

A1 REMFG INC
MASS AIRFLOW SENSORS
Sherman Parts
FRONT BUMPER SPOILER LOWER AUDI A4 A4 QUATTRO S4 2021

A1 REMFG INC
FRICTION CHOICE CALIPERS

OMP Racing
OMP 06-08 Audi A4/S4 - Passenger Bracket

TYC
1823 AD Q5/SQ5 L4 2.0 TUR STARTER

A1 REMFG INC
IMPORT ECC

Sherman Parts
CAPA RT FRT FENDER ASSY AUDI A4 1719
A1 REMFG INC
NEW CV DRIVE AXLES

TYC
CAPA 0912 AD A.4/S.4 HID W/O CURVE HEADLAMP ASSY LH

TYC
CAPA 0912 AD A.4/S.4 HID W/O CURVE HEADLAMP ASSY RH

TYC
0917 AD A.4/A.5/Q.5 2.0L L4 AT 1R PA(w/ TOC)RAD
A1 REMFG INC
MASS AIRFLOW SENSORS
Sherman Parts
FRONT BUMPER REINFORCEMENT AUDI A4 1720
A1 REMFG INC
VOLKSWAGEN PASSAT 01-00

TYC
INTERCOOLER ASSY 2.0L; SDN; W/O ULTRA ENG AUDI A4 1721; WGN AUDI A4 ALLROAD 1721; A5 QUATTRO 1821

TYC
0912 AD Q.5 3.2L V6 1R PA RAD
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1316 AD A.4/1317 A.5 W/O CURVE LTG HID H.L RH

Sherman Parts
CAPA RADIATOR SUPPORT SEDAN/WAGON AUDI A4 0916

Samco
Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (YELLOW)
Samco
Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (SOLARORANGECAMO)
Samco
Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (RED)
TYC
1718 AD A.4 PWR HT W/ SIG PTM MIR RH

A1 REMFG INC
IMPORT WINDOW LIFT MOTOR
TYC
0308 AD A.4/QATRO 1.8L L4 (w/EOC) 1R PA RAD
A1 REMFG INC
NEW CV DRIVE AXLES
TYC
INTERCOOLER ASSY 2.0L AUDI A5 QUATTRO 1017; A4 0916; Q5 1117 ALLROAD 1316; A6 1215
Samco
Samco Volswagen Passat 1.8T B5.5 AUG US Spec (4) Turbo Kit (BLUE)

Samco
Samco Audi A4 1800 Turbo B5 AEB/ATW/AWM/AVJ (1) Induction Hose (BRG)
TYC
0206 AD A.4 COMPRESSOR
Samco
Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (LIGHTNINGBLUECAMO)

Samco
Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (GREEN)
Samco
Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (BLUE)
Samco
Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (BLACK)
Edge Autosport
STAGE 2 KITS

TYC
0509 AD A.4 / A.4 QATRO 3.2L V6 STR
A1 REMFG INC
IMPORT WINDOW LIFT MOTOR
Sherman Parts
CAPA RR BUMPER CVR R56;BASE;H/B;W/O JCW ;W/CHROME ;W/O LUGGAGE CARRIER;PRIME MINI COO
SPEC D TUNING
PROJECTOR HEADLIGHT BLACK R8 STYLE

A1 REMFG INC
AUDI A4 SERIES 09-05
TYC
CAPA 1217 AD A5/S5 W/O CURVE LTG HID HEADLIGHT ASSY LH
Sherman Parts
CAPA HOOD PANEL ASSY AUDI A4/A4 QUATTRO 1721

Dana
SEALSETVALVESTEM

A1 REMFG INC
NEW WINDOW LIFT REGULATOR
Sherman Parts
CAPA LT FRT FENDER ASSY AUDI A4 A4 QUATTRO S4 2021
TYC
1720 AD A.4 W/ BLM BLOWER ASSY
SPEC D TUNING
2018 S4 SEDAN FRONT BUMPER LIP GLOSSY BLACK

TYC
BLOWER ASSY AUDI A4/S4 1316

SPEC D TUNING
HALO LED PROJECTOR GLOSS BLACK

TYC
CAPA 0912 AD A.4/S.4 SDN 0911 A.6/S.6 FOGLAMP ASSY LH
A1 REMFG INC
SELECT CVJ
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