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 Parts

8164 parts available

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

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PIGTAIL OR SOCKET

Dorman

PIGTAIL OR SOCKET

DISC BRAKE HDW KIT

Dorman

DISC BRAKE HDW KIT

VVT SOLENOID

Dorman

VVT SOLENOID

D

Dorman

STABILIZER BAR LINK

MOUNT RUBBER

AP Exhaust Products

MOUNT RUBBER

C

Cloyes Gear & Products

ENGINE OIL PUMP CHAIN TENSIONER

CABIN AIR FILTER

WIX

CABIN AIR FILTER

D

Dorman

STABILIZER BAR LINK

D

Dorman

STABILIZER BAR LINK

D

Dorman

STABILIZER BAR LINK

COOLANT LINE

Dorman

COOLANT LINE

MOUNT RUBBER

AP Exhaust Products

MOUNT RUBBER

D

Dorman

STABILIZER BAR LINK

OIL FILTER

WIX

OIL FILTER

BRAKE HOSE

Dorman

BRAKE HOSE

OIL LEVEL DIP STICK

Dorman

OIL LEVEL DIP STICK

OIL FILTER CAP

Dorman

OIL FILTER CAP

HOOD INSULATION RET

Dorman

HOOD INSULATION RET

HEAD GASKET SET

Dana

HEAD GASKET SET

OIL FILTER

WIX

OIL FILTER

VW PCV DIAPHRAGM

Dorman

VW PCV DIAPHRAGM

OIL FILTER CAPS

Dorman

OIL FILTER CAPS

CRANKSHAFT SENSOR

Dorman

CRANKSHAFT SENSOR

RACK BELLOW

Dorman

RACK BELLOW

CALIPER REPAIR KIT

Dorman

CALIPER REPAIR KIT

AIR FILTER MIN ORDER QTY1

WIX

AIR FILTER MIN ORDER QTY1

BUSHING

Dorman

BUSHING

C

Cloyes Gear & Products

DRIVE BELT PULLEY

DISC BRK GUIDE BOLT/

Dorman

DISC BRK GUIDE BOLT/

BRAKE HOSE

Dorman

BRAKE HOSE

FUEL FILTER MIN ORDER QTY12

WIX

FUEL FILTER MIN ORDER QTY12

MERCEDESBENZ A250 20192019 DISC BRAKE PAD SET

Brembo

MERCEDESBENZ A250 20192019 DISC BRAKE PAD SET

SLEEVE

AP Exhaust Products

SLEEVE

Cloyes Gear Products auto part

Cloyes Gear & Products

ENGINE OIL PUMP CHAIN TENSIONER

F

Fel-Pro

OIL PAN GASKET SET

D

Dorman

TPMS SENSOR

ENGINE VALVE COVER GASKET SET

Dana

ENGINE VALVE COVER GASKET SET

VALVE COVER GASKET SET

Dana

VALVE COVER GASKET SET

A

AP Exhaust Products

0913 FORESTER/9802 PASSPORT EXHAUST FLANGE GASKET

PLATINUM POWER SPARK PLU

Champion Race Plugs

PLATINUM POWER SPARK PLU

BELT IDLER PULLEY

Cloyes Gear & Products

BELT IDLER PULLEY

BRAKE HOSE

Dorman

BRAKE HOSE

ENGINE CYLINDER HEAD BOLT SET

Dana

ENGINE CYLINDER HEAD BOLT SET

ENGINE HEAD GASKET

Dana

ENGINE HEAD GASKET

ENGINE HEAD GASKET

Dana

ENGINE HEAD GASKET

ENGINE CYLINDER HEAD BOLT SET

Dana

ENGINE CYLINDER HEAD BOLT SET

ENGINE CYLINDER HEAD BOLT SET

Dana

ENGINE CYLINDER HEAD BOLT SET

ENGINE HEAD GASKET

Dana

ENGINE HEAD GASKET

ENGINE HEAD GASKET

Dana

ENGINE HEAD GASKET

Ferrea Racing titanium springs

Ferrea Racing

Ferrea VW 2.0T FSI Single Spring 7 Deg Pro CNC Titanium Retainer - Single

SPECTRAS H1 BLUE BULBS

Cipa

SPECTRAS H1 BLUE BULBS

W

WIX

OIL FILTER

Ferrea Audi/VW 1.8T 20V/2.7T 30V Intake Spring Seat Locators - Set of 6 (For S10056)

Ferrea Racing

Ferrea Audi/VW 1.8T 20V/2.7T 30V Intake Spring Seat Locators - Set of 6 (For S10056)

C

Cloyes Gear & Products

ENGINE TIMING CHAIN GUIDE

C

Cloyes Gear & Products

BELT IDLER

WATER OUTLET

Dorman

WATER OUTLET

BRAKE PAD WEAR SENSOR

Dorman

BRAKE PAD WEAR SENSOR

CAMSHAFT SENSOR

Dorman

CAMSHAFT SENSOR

CALIPER REPAIR KIT

Dorman

CALIPER REPAIR KIT

D

Dorman

RETAINER FITS 24MM HEX

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