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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THERMOSTAT HOUSING

Dorman

THERMOSTAT HOUSING

DISC BRAKE HDWE KIT

Dorman

DISC BRAKE HDWE KIT

F

Ferrea Racing

Ferrea Audi Spring Seat Locator - Single (Required for S10055 / Drop Ship Only)

Ferrea Racing exhaust

Ferrea Racing

Ferrea VW 1.8T 20V Exhaust Dual Valve Spring - Single (Drop Ship Only)

CRANKSHAFT SEAL

Dorman

CRANKSHAFT SEAL

Ferrea Audi 2.0T FSI DOHC 16 Valve Lifter Shim - Single

Ferrea Racing

Ferrea Audi 2.0T FSI DOHC 16 Valve Lifter Shim - Single

OIL FILTER

WIX

OIL FILTER

TIE ROD ASSY

Dorman

TIE ROD ASSY

D

Dorman

TIE ROD

D

Dorman

BRAKE HOSE

BRAKE HOSE

Dorman

BRAKE HOSE

DISC BRAKE HDWE KIT

Dorman

DISC BRAKE HDWE KIT

D

Dana

VALVE COVER GASKET SET

SPLASH SHIELD SCREW/CLIP

Dorman

SPLASH SHIELD SCREW/CLIP

Radius arm - lower bushing 2 Shell Bushings 2 Tubes Install Guide Grease

Nolathane

Radius arm - lower bushing 2 Shell Bushings 2 Tubes Install Guide Grease

IRIDIUM SPARK PLUGS BOX

Champion Race Plugs

IRIDIUM SPARK PLUGS BOX

HEAD BOLT SET

Dana

HEAD BOLT SET

PRESSURE SENSOR

Dorman

PRESSURE SENSOR

DISC BRAKE HDWE KIT

Dorman

DISC BRAKE HDWE KIT

ENGINE HEAD GASKET

Dana

ENGINE HEAD GASKET

W

WIX

AIR FILTER

TIE ROD END - OUTER

Dorman

TIE ROD END - OUTER

SPINDLE BOLT

Dorman

SPINDLE BOLT

ENGINE HEAD GASKET

Dana

ENGINE HEAD GASKET

TRANSMISSION FILTER MIN ORDER QTY1

WIX

TRANSMISSION FILTER MIN ORDER QTY1

AUDI A4 20202020 A4 ALLROAD 20202024 A4 QUATTRO 20202024 DISC BRAKE PAD SE

Brembo

AUDI A4 20202020 A4 ALLROAD 20202024 A4 QUATTRO 20202024 DISC BRAKE PAD SE

STABILIZER BAR LINK KIT

Dorman

STABILIZER BAR LINK KIT

THERMOSTAT HOUSING

Dorman

THERMOSTAT HOUSING

THERMOSTAT HOUSING

Dorman

THERMOSTAT HOUSING

D

Dorman

STABILIZER BAR LINK

D

Dorman

HOOD INSULATION

BRAKE HOSE

Dorman

BRAKE HOSE

D

Dorman

STABILIZER BAR LINK KIT

WATER OUTLET

Dorman

WATER OUTLET

OIL FILTER

WIX

OIL FILTER

AUDI A4 20172020 A4 ALLROAD 20172024 A4 QUATTRO 20172024 DISC BRAKE ROTOR

Brembo

AUDI A4 20172020 A4 ALLROAD 20172024 A4 QUATTRO 20172024 DISC BRAKE ROTOR

ANTI-LOCK BRAKE SYSTEM TONE RING

Dorman

ANTI-LOCK BRAKE SYSTEM TONE RING

DISC BRAKE ROTOR

Brembo

DISC BRAKE ROTOR

RACK BELLOW

Dorman

RACK BELLOW

C

Cloyes Gear & Products

TIMING BELT

TIE ROD

Dorman

TIE ROD

C

Cloyes Gear & Products

TIMING BELT

Ferrea Audi Spring Seat Locator - Single (Required for S10056 / Drop Ship Only)

Ferrea Racing

Ferrea Audi Spring Seat Locator - Single (Required for S10056 / Drop Ship Only)

STABILIZER BAR LINK

Dorman

STABILIZER BAR LINK

CABIN AIR FILTER MIN ORDER QTY1

WIX

CABIN AIR FILTER MIN ORDER QTY1

STABILIZER BAR LINK KIT

Dorman

STABILIZER BAR LINK KIT

STABILIZER BAR LINK KIT

Dorman

STABILIZER BAR LINK KIT

C

Cloyes Gear & Products

TIMING GEARS

D

Dorman

STABILIZER BAR LINK KIT

C

Cloyes Gear & Products

TIMING BELT

STABILIZER BAR LINK KIT

Dorman

STABILIZER BAR LINK KIT

D

Dorman

STABILIZER BAR LINK KIT

D

Dorman

STABILIZER BAR LINK

BRAKE PAD WEAR SENSOR

Dorman

BRAKE PAD WEAR SENSOR

D

Dorman

STABILIZER BAR LINK KIT

W

WIX

CABIN AIR FILTER

D

Dorman

STABILIZER BAR LINK KIT

OIL FILTER

WIX

OIL FILTER

AIR FILTER

WIX

AIR FILTER

Valve Cover Set AUDI 2976CC 3.0L AVK BGN 2002-2006

Mahle

Valve Cover Set AUDI 2976CC 3.0L AVK BGN 2002-2006

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