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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HITCH AUDI A4 SEDAN ONLY

Draw-Tite

HITCH AUDI A4 SEDAN ONLY

D

Derale

TIMING KIT' 99 - 05 AUDI / VOLKSWAG

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

DISC BRAKE ROTOR

Raybestos Brakes

DISC BRAKE ROTOR

PREMIUM NEW SEMI LOADED CALIPER

Raybestos Brakes

PREMIUM NEW SEMI LOADED CALIPER

Brake Rotor: Various Makes and Models; Brake Rotor; Outside Diameter 12.283"; 5 Bolt Holes; Vented

Raybestos Brakes

Brake Rotor: Various Makes and Models; Brake Rotor; Outside Diameter 12.283"; 5 Bolt Holes; Vented

FRICTION CALIPERS

Raybestos Brakes

FRICTION CALIPERS

Regionmax auto part

Regionmax

RH HEADLAMP ASSY COMPOSITE W/HALOGEN AUDI A4 0508

C

Covercraft

CARGO LINER CARHARTT AUDI A4

Metra Electronics auto part

Metra Electronics

AUDI HDMI AND CAMERA INTERFACE 2013

FRICTION CALIPERS

Raybestos Brakes

FRICTION CALIPERS

HARDWARE- HYDRAULICS

Raybestos Brakes

HARDWARE- HYDRAULICS

Moog control arms

Moog

1720 AUDI A4/ALLROAD/A4 QUATTRO/1820 A5 QUATTRO CONTROL ARM AND BALL JOINT ASS

E

East Penn Manufacturing

WIRE PRIMARY 16 GA 4000

C

Covercraft

CARGO LINER CARHARTT AUDI A4

D

Dana

ENGINE CONVERSION GASKET SET

D

Dana

CONVERSION GASKET ST

HEAD GASKET SET

Dana

HEAD GASKET SET

Dana auto part

Dana

ENGINE CONVERSION GASKET SET

Dorman throttle body

Dorman

THROTTLE BODY UNIT

D

Dorman

CONTROL ARM

D

Dorman

REAR DRIVESHAFT

Dorman auto part

Dorman

REAR DRIVESHAFT

D

Dorman

CONTROL ARM

D

Dorman

DRIVESHAFT AUDI

HEAD GASKET SET

Dana

HEAD GASKET SET

Dorman auto part

Dorman

SECONDARY AIR INJECTION CHECK VALVE

D

Dorman

CAM PHASER

Dorman control arms

Dorman

CONTROL ARM W/ BALL JOINT

HEAD GASKET SET

Dana

HEAD GASKET SET

Dorman auto part

Dorman

DOOR LOCK ACTUATOR

Dorman control arms

Dorman

CONTROL ARM

Dorman auto part

Dorman

COMBINATION VALVE

HEAD GASKET SET

Dana

HEAD GASKET SET

THIRD BRAKE LIGHT

Dorman

THIRD BRAKE LIGHT

Ferrea Racing titanium intake system

Ferrea Racing

Ferrea VW 2.0T TS Single Spring 7 Deg Pro CNC Intake Titanium Retainer - Set of 8

F

Ferrea Racing

Ferrea Audi/VW 1.8T 20V Single Spring 7 Deg Pro CNC Intake Titanium Retainer - Set of 12

Walker Exhaust muffler

Walker Exhaust

MUFFLER ASSEMBLY - QUIET-

Walker Exhaust auto part

Walker Exhaust

RESONATOR ASSEMBLY - IMPO

D

Dorman

THIRD BRAKE LAMP

Aud A4/S4 B9 Chassis 1

Planted Technology

Aud A4/S4 B9 Chassis 1

Aud A4/S4 B9 Chassis 1

Planted Technology

Aud A4/S4 B9 Chassis 1

B

Brembo

Brembo 00-02 S4/02-05 A4/06-08 A4 Front GT BBK 6 Piston Cast 355x32 2pc Rotor Slotted TY3L-Red

WATER PIPE

Dorman

WATER PIPE

D

Dorman

HARMONIC BALANCER ASSEMBLY

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

B

Brembo

Brembo 04-08 S4/06-08 A4 Rear GT BBK 4 Piston Cast 2pc 345x28 2pc Rotor Slotted TY3L-Red

B

Brembo

Brembo 04-08 S4/06-08 A4 Rear GT BBK 4 Piston Cast 2pc 345x28 2pc Rotor Slotted TY3L-Black

TURBOCHARGER COOLANT FEED LINE

Dorman

TURBOCHARGER COOLANT FEED LINE

ABS SENSOR

Dorman

ABS SENSOR

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

B

Brembo

Brembo 00-02 S4/02-05 A4/06-08 A4 Fr GTR BBK 6 Pist Billet 355x32 2pc Rotor Slotted TY3L- Nickel

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