QUATTRO MEETS PRACTICALITY

B5 through B9 — Audi's compact sedan with available Quattro AWD and turbo power.

Audi A4 HERITAGE

THE QUATTRO COMPACT

The Audi A4 has been the German compact sport sedan since 1994. The B5 (1.8T) launched the tuner-friendly chassis, the B6/B7 added the K04 turbo upgrade culture, and the B8/B9 brought EA888 turbocharged 2.0T engines that share parts with the VW Golf R / Jetta GLI.

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

3,135
Parts that fit
3,000+
MOTORMIA Builds
EBC
#1 brand by SKUs
$711
Average MSRP

READY TO BUILD YOUR AUDI A4?

Pick your year and trim to shop verified-fit Audi A4 parts.

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Verified Fitment

Audi A4 Parts

8164 parts available

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

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TYC

CAPA 0912 AD A.4/S.4 HALGN HEADLAMP ASSY RH

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A1 REMFG INC

IMPORT ECC

SPEC D TUNING auto part

SPEC D TUNING

96-99 A4 HALO LED PROJECT

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Wheel Pros, LLC

20X9 PNT 5X112 28 66.56

KIT COIL PLUG MS100203 Z1003100 4x GREY

APR Tuning

KIT COIL PLUG MS100203 Z1003100 4x GREY

A1 REMFG INC auto part

A1 REMFG INC

IMP UNLOADED CALIPERS

TYC auto part

TYC

STARTER MOTOR VW PASSAT 1.8L L4 0405

TYC auto part

TYC

STARTER MOTOR VW PASSAT 2.8L V6 0005

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Tong Yang Industry Co.

SELTS GRILLE PNTDBLK W/CHRM MLDG (S/EX/NIGHTFALL EDITION/SX)(OTN) KIA SELTOS 20

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A1 REMFG INC

MASS AIRFLOW SENSOR

A1 REMFG INC auto part

A1 REMFG INC

MASS AIRFLOW SENSORS

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Sherman Parts

FRONT BUMPER SPOILER LOWER AUDI A4 A4 QUATTRO S4 2021

A1 REMFG INC auto part

A1 REMFG INC

FRICTION CHOICE CALIPERS

OMP Racing roof rack

OMP Racing

OMP 06-08 Audi A4/S4 - Passenger Bracket

TYC auto part

TYC

1823 AD Q5/SQ5 L4 2.0 TUR STARTER

A1 REMFG INC auto part

A1 REMFG INC

IMPORT ECC

Sherman Parts auto part

Sherman Parts

CAPA RT FRT FENDER ASSY AUDI A4 1719

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A1 REMFG INC

NEW CV DRIVE AXLES

TYC auto part

TYC

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

TYC auto part

TYC

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

TYC auto part

TYC

0917 AD A.4/A.5/Q.5 2.0L L4 AT 1R PA(w/ TOC)RAD

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A1 REMFG INC

MASS AIRFLOW SENSORS

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Sherman Parts

FRONT BUMPER REINFORCEMENT AUDI A4 1720

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A1 REMFG INC

VOLKSWAGEN PASSAT 01-00

TYC intercooler

TYC

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

TYC auto part

TYC

0912 AD Q.5 3.2L V6 1R PA RAD

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TYC

1316 AD A.4/1317 A.5 W/O CURVE LTG HID H.L RH

Sherman Parts auto part

Sherman Parts

CAPA RADIATOR SUPPORT SEDAN/WAGON AUDI A4 0916

Samco auto part

Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (YELLOW)

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Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (SOLARORANGECAMO)

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Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (RED)

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TYC

1718 AD A.4 PWR HT W/ SIG PTM MIR RH

IMPORT WINDOW LIFT MOTOR

A1 REMFG INC

IMPORT WINDOW LIFT MOTOR

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TYC

0308 AD A.4/QATRO 1.8L L4 (w/EOC) 1R PA RAD

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A1 REMFG INC

NEW CV DRIVE AXLES

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TYC

INTERCOOLER ASSY 2.0L AUDI A5 QUATTRO 1017; A4 0916; Q5 1117 ALLROAD 1316; A6 1215

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Samco

Samco Volswagen Passat 1.8T B5.5 AUG US Spec (4) Turbo Kit (BLUE)

Samco auto part

Samco

Samco Audi A4 1800 Turbo B5 AEB/ATW/AWM/AVJ (1) Induction Hose (BRG)

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TYC

0206 AD A.4 COMPRESSOR

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Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (LIGHTNINGBLUECAMO)

Samco auto part

Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (GREEN)

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Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (BLUE)

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Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (BLACK)

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Edge Autosport

STAGE 2 KITS

0509 AD A.4 / A.4 QATRO 3.2L V6 STR

TYC

0509 AD A.4 / A.4 QATRO 3.2L V6 STR

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A1 REMFG INC

IMPORT WINDOW LIFT MOTOR

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Sherman Parts

CAPA RR BUMPER CVR R56;BASE;H/B;W/O JCW ;W/CHROME ;W/O LUGGAGE CARRIER;PRIME MINI COO

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SPEC D TUNING

PROJECTOR HEADLIGHT BLACK R8 STYLE

AUDI A4 SERIES 09-05

A1 REMFG INC

AUDI A4 SERIES 09-05

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TYC

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

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Sherman Parts

CAPA HOOD PANEL ASSY AUDI A4/A4 QUATTRO 1721

SEALSETVALVESTEM

Dana

SEALSETVALVESTEM

NEW WINDOW LIFT REGULATOR

A1 REMFG INC

NEW WINDOW LIFT REGULATOR

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Sherman Parts

CAPA LT FRT FENDER ASSY AUDI A4 A4 QUATTRO S4 2021

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TYC

1720 AD A.4 W/ BLM BLOWER ASSY

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SPEC D TUNING

2018 S4 SEDAN FRONT BUMPER LIP GLOSSY BLACK

BLOWER ASSY AUDI A4/S4 1316

TYC

BLOWER ASSY AUDI A4/S4 1316

HALO LED PROJECTOR GLOSS BLACK

SPEC D TUNING

HALO LED PROJECTOR GLOSS BLACK

CAPA 0912 AD A.4/S.4 SDN 0911 A.6/S.6 FOGLAMP ASSY LH

TYC

CAPA 0912 AD A.4/S.4 SDN 0911 A.6/S.6 FOGLAMP ASSY LH

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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