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.

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.

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30-Day Returns
HEAD GASKET SET

Dana

HEAD GASKET SET

THIRD BRAKE LIGHT

Dorman

THIRD BRAKE LIGHT

D

Dorman

THIRD BRAKE LAMP

WATER PIPE

Dorman

WATER PIPE

CONTROL ARM BUSHING

Dorman

CONTROL ARM BUSHING

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

Arc Lighting auto part

Arc Lighting

Xtreme Series D5 HID Replacement LED Bulb Kit (2 EA)

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

AUDI CAR BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

HEAD GASKET SET

Dana

HEAD GASKET SET

D

Dorman

ELECTRIC PARKING BRAKE MOTOR

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

WINDOW REGULATOR

Dorman

WINDOW REGULATOR

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

TIE ROD END

Dorman

TIE ROD END

TIE ROD END - OUTER

Dorman

TIE ROD END - OUTER

REGULATOR ONLY POWER

Dorman

REGULATOR ONLY POWER

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

D

Dorman

HID CONTROL MODULE

D

Dorman

ENGINE COOLANT THERMOSTAT HOUSING A

C

Covercraft

COLGAN ORGL FRONT END BRA

D

Dorman

TIE ROD ASSY

C

Covercraft

COLGAN ORGL FRONT END BRA

THERMOSTAT HOUSING

Dorman

THERMOSTAT HOUSING

Covercraft auto part

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

LLOYD MATS ULTIMAT OFFICIAL LICENSE

Covercraft

LLOYD MATS ULTIMAT OFFICIAL LICENSE

CAM POSITION SENSOR

Dorman

CAM POSITION SENSOR

C

Covercraft

COLGAN MIRROR BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

B

Brembo

DISC BRAKE ROTOR

D

Dorman

ENGINE OIL PAN

D

Dorman

WINDSHIELD WIPER TRANSMISSION ASSEM

BRAKE HYDRAULIC HOSE

Dorman

BRAKE HYDRAULIC HOSE

C

Covercraft

COLGAN ORGL FRONT END BRA

DISC BRAKE ROTOR

Brembo

DISC BRAKE ROTOR

Aud A4/S4 B8 Chassis 0

Planted Technology

Aud A4/S4 B8 Chassis 0

Aud A4/S4 B7 Chassis 0

Planted Technology

Aud A4/S4 B7 Chassis 0

Dorman auto part

Dorman

DOOR LOCK ACTUATOR

BRAKE HYDRAULIC HOSE

Dorman

BRAKE HYDRAULIC HOSE

Dorman auto part

Dorman

HIGH INTENSITY DISCHARGE CONTROL MO

REGULATOR ONLY POWER

Dorman

REGULATOR ONLY POWER

WATER PUMP

Hella

WATER PUMP

Engine Crankcase Cover Gasket Set - 08-31956-01

Victor Reinz

Engine Crankcase Cover Gasket Set - 08-31956-01

A

ANZO

0608 A4 PROJECTOR HEADLIGHTS HALO G2 BLACK CLEAR

H

HKS

HKS Audi A4(1997-2006) Audi A3(2006) Volkswagen Beetle(1998-2006) HKS Super Hybrid Filters Super H

ANZO black headlights

ANZO

0508 AUDI A4/S4/RS4 PROJECTOR BLACK CLEAR(R8 LED STYLE)HEADLIGHTS DRIVE/PASS

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.

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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