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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B

Brembo

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

B

Brembo

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

M

Megan Racing

Megan Audi A4 A4 S4 A5 S5 B8 8K 08-14 Front Lower Arm Rear 2pcs MSRP $286

D

Dorman

LATERAL ARM

TURBO LINE

Dorman

TURBO LINE

C

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

AUDI CAR BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

Dorman auto part

Dorman

TURBOCHARGER

BOOST SOLENOID

Dorman

BOOST SOLENOID

Denso auto part

Denso

AIR/FUEL SENSOR

CLUTCH MASTER CYL

Dorman

CLUTCH MASTER CYL

Dorman auto part

Dorman

AIR CHECK VALVE

Dorman auto part

Dorman

TRAILING ARM

Dorman auto part

Dorman

TRAILING ARM

Dorman control arms

Dorman

CONTROL ARM W/O BALL JOINT

B

Brembo

Brembo 08-17 A5/09-16 A4/09-17 Q5 2.0T/3.2FSI Fr GT BBK 6Pist Cast 355x32 2pc Rotor Slot TY3L-Red

Dorman control arms

Dorman

CONTROL ARM

D

Dana

HEAD GASKET SET

HEAD GASKET SET

Dana

HEAD GASKET SET

VVT SOLENOID

Dorman

VVT SOLENOID

VVT SOLENOID

Dorman

VVT SOLENOID

D

Dorman

CONTROL ARM W/O BALL

VVT SOLENOID

Dorman

VVT SOLENOID

CONTROL ARM W/O BALL JOINT

Dorman

CONTROL ARM W/O BALL JOINT

Walker Exhaust auto part

Walker Exhaust

CONVERTER- DF- CARB- CALC

D

Dorman

ELECTRIC PARKING BRAKE MOTOR

Dorman auto part

Dorman

REAR DRIVESHAFT

Walker Exhaust auto part

Walker Exhaust

CONVERTER- DF- EPA- ULTRA

W

Walker Exhaust

RESONATOR ASSEMBLY - IMPO

D

Dorman

REAR DRIVESHAFT

Megan Audi A4 09-13 A5 08-13 S5 08-11 Rear Sway Bar 25.4mm 3pcs

Megan Racing

Megan Audi A4 09-13 A5 08-13 S5 08-11 Rear Sway Bar 25.4mm 3pcs

VVT SOLENOID

Dorman

VVT SOLENOID

Megan Audi A4 8K S4 A5 8T S5 Q5 8R Rear Reinforced Stab Link 2pcs MSRP $165

Megan Racing

Megan Audi A4 8K S4 A5 8T S5 Q5 8R Rear Reinforced Stab Link 2pcs MSRP $165

Dorman auto part

Dorman

VARIABLE VALVE TIMING SOLENOID

OIL FILTER CAP

Dorman

OIL FILTER CAP

C

Covercraft

COLGAN ORGL FRONT END BRA

Dorman control arms

Dorman

CONTROL ARM

WIX oil filter

WIX

OIL FILTER MIN ORDER QTY1

C

Covercraft

COLGAN ORGL FRONT END BRA

Dorman auto part

Dorman

VALVE TIMING SOLENOID

LATERAL ARM

Dorman

LATERAL ARM

Dorman auto part

Dorman

VARIABLE VALVE TIMING SOLENOID

B

Brembo

Brembo 08-17 A5/09-16 A4 Front GT BBK 6 Piston Cast 380x34 2pc Rotor Slotted TY3L- White

B

Brembo

Brembo 08-17 A5/09-16 A4 Front GT BBK 6 Piston Cast 380x34 2pc Rotor Slotted TY3L-Red

WINDOW REGULATOR

Dorman

WINDOW REGULATOR

BUSHING

Dorman

BUSHING

Dorman control arms

Dorman

CONTROL ARM W/O BALL JOINT

B

Brembo

Brembo 17+ A4/18+ A5/18+ S4/18+ S5 Fr GT BBK 6Pist Cast 380x34 2pc Rotor Slot TY3L- Fluo. Yellow

C

Covercraft

COLGAN ORGL FRONT END BRA

Brembo auto part

Brembo

Brembo 08-17 A5/09-16 A4 Front GT BBK 6 Piston Cast 380x34 2pc Rotor Slotted TY3L- Yellow

B

Brembo

Brembo 08-17 A5/09-16 A4 Front GT BBK 6 Piston Cast 380x34 2pc Rotor Slotted TY3L-Black

H

Holley

SELECTA SPEED WIPER KIT, INIVERSAL

Aud A4/S4 B6 Chassis 0

Planted Technology

Aud A4/S4 B6 Chassis 0

Ferrea Racing exhaust

Ferrea Racing

Ferrea VW VR6 R32 30.20mm 5.96mm 136.48mm 25 Deg Taper Flo Stk Super Alloy Exhaust Valve - Set of 6

AP Exhaust Products muffler

AP Exhaust Products

MUFFLER REAR ANSA OER

A

AP Exhaust Products

MUFFLER CENTER ANSA OER

A

AP Exhaust Products

MUFFLER REAR ANSA OER

Aud A4/S4 B6 Chassis 0

Planted Technology

Aud A4/S4 B6 Chassis 0

C

Covercraft

COLGAN ORGL FRONT END BRA

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