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

8166 parts available

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

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A

AP Exhaust Products

CATALYTIC CONVERTER UNIVERSAL OBDII CALIFORNIA STD OVAL ANGLED

A

AP Exhaust Products

CATALYTIC CONVERTER UNIVERSAL OBDII CALIFORNIA STD ROUND O2

D

Dorman

TIE ROD ASSY

TIE ROD END ASSEMBLY

Dorman

TIE ROD END ASSEMBLY

B

Brembo

Brembo 17+ A4/18+ A5 Front GTS BBK 6 Piston Cast 380x32 2pc Rotor Slotted TY3L-Black HA

F

Ferrea Racing

Ferrea 06-08 Audi 2.0L FSI Single Spring Kit

B

Brembo

Brembo 17+ A4 /18+ A5 Front GT BBK 6 Piston Cast 380x32 2pc Rotor Slotted TY3L- Yellow

B

Brembo

Brembo 17+ A4 /18+ A5 Front GT BBK 6 Piston Cast 380x32 2pc Rotor Slotted TY3L-Silver

CLUTCH MASTER CYLINDER

Dorman

CLUTCH MASTER CYLINDER

C

Covercraft

COLGAN ORGL FRONT END BRA

THERMOSTAT HOUSING

Dorman

THERMOSTAT HOUSING

B

Brembo

Brembo 17+ A4 /18+ A5 Front GT BBK 6 Piston Cast 380x32 2pc Rotor Slotted TY3L-Black

CLUTCH MASTER CYL

Dorman

CLUTCH MASTER CYL

Dorman control arms

Dorman

CONTROL ARM W/ BALL JOINT

D

Dorman

DUAL FAN ASSEMBLY

Covercraft auto part

Covercraft

COLGAN ORGL FRONT END BRA

C

Covercraft

COLGAN ORGL FRONT END BRA

W

Walker Exhaust

MUFFLER ASSEMBLY - QUIET-

TURBO OIL INLET

Dorman

TURBO OIL INLET

Ferrea Racing titanium springs

Ferrea Racing

Ferrea VW 2.0T FSI Single Spring 7 Deg Pro CNC Titanium Retainer - Set of 16

Cloyes Gear & Products auto part

Cloyes Gear & Products

ENGINE TIMING CHAIN KIT

B

Brembo

Brembo 08-17 A5 Front GTS BBK 6 Piston Cast 380x34 2pc Rotor Slotted TY3L-Black HA

B

Brembo

Brembo 17+ A4/18+ A5/18+ S4/18+ S5 Fr GT BBK 6 Piston Cast 380x34 2pc Rotor Slotted TY3L- Yellow

B

Brembo

Brembo 17+ A4/18+ A5/18+ S4/18+ S5 Front GT BBK 6 Piston Cast 380x34 2pc Rotor Slotted TY3L-Black

LLOYD MATS ULTIMAT OFFICIAL LICENSE

Covercraft

LLOYD MATS ULTIMAT OFFICIAL LICENSE

B

Brembo

Brembo 17+ A4 /18+ A5 Front GT BBK 6 Piston Cast 380x32 2pc Rotor Slotted TY3L-Red

D

Dorman

CONTROL ARM

HUB ASSEMBLY

Dorman

HUB ASSEMBLY

Dorman auto part

Dorman

CONTROL MODULE

FUEL FILTER MIN ORDER QTY1

WIX

FUEL FILTER MIN ORDER QTY1

B

Brembo

Brembo 17+ A4/18+ A5 Front GTR BBK 6 Piston Billet 380x32 2pc Rotor Slotted TY3L- Nickel

W

Walker Exhaust

Catalytic Converter: Variuos Makes and Models; direct fit

CAM POSITION SENSOR

Dorman

CAM POSITION SENSOR

Megan Racing sway bar

Megan Racing

Megan Audi A4 A5 17 Rear Sway Bar (25.4mm)

C

Covercraft

COLGAN MIRROR BRA

Dorman auto part

Dorman

LATERAL ARM

M

Megan Racing

Megan Audi A4 A5 17 Front Sway Bar (32mm)

Cloyes Gear & Products auto part

Cloyes Gear & Products

ENGINE TIMING CHAIN KIT

Cloyes Gear & Products auto part

Cloyes Gear & Products

ENGINE TIMING CHAIN KIT

C

Covercraft

COLGAN ORGL FRONT END BRA

Dorman control arms

Dorman

CONTROL ARM

D

Dorman

ENGINE OIL COOLER

Megan Audi A4 09-13 A5 08-13 S5 08-11 Front Sway Bar 30mm 3pcs

Megan Racing

Megan Audi A4 09-13 A5 08-13 S5 08-11 Front Sway Bar 30mm 3pcs

Megan Racing auto part

Megan Racing

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

D

Dorman

CONTROL ARM

Dorman auto part

Dorman

NEW MASTER CYLINDER

Megan Audi A4 A5 17 Lowering Springs (EXC Wagon)

Megan Racing

Megan Audi A4 A5 17 Lowering Springs (EXC Wagon)

Megan Lowering Springs A4 96-01 FWD 25 LBs Spring Rate: Front K1-146 K2-224 Rear K1-65 K2-168

Megan Racing

Megan Lowering Springs A4 96-01 FWD 25 LBs Spring Rate: Front K1-146 K2-224 Rear K1-65 K2-168

NEW MASTER CYLINDER

Dorman

NEW MASTER CYLINDER

Aud R8 2nd Generation

Planted Technology

Aud R8 2nd Generation

NEW MASTER CYLINDER

Dorman

NEW MASTER CYLINDER

B

Brembo

DISC BRAKE ROTOR

CONTROL ARM

Dorman

CONTROL ARM

Ferrea Racing springs

Ferrea Racing

Ferrea Audi 2.0T FSI 16V Single Valve Spring - Set of 16

D

Dorman

ENGINE OIL PAN

Champion Race Plugs auto part

Champion Race Plugs

CHAMPION IRIDIUM

D

Dorman

ABS MODULE

D

Dorman

WINDSHIELD WIPER TRANSMISSION ASSEM

D

Dorman

DUAL FAN ASSEMBLY

BRAKE HYDRAULIC HOSE

Dorman

BRAKE HYDRAULIC HOSE

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