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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CAPA LH RR BUMPER BRACKET; SEDAN/WAGON; A4 0916; S4 1016

Sherman Parts

CAPA LH RR BUMPER BRACKET; SEDAN/WAGON; A4 0916; S4 1016

S

Sherman Parts

FRONT BUMPER AIR SHIELD LOWER W/O SLINE PKG AUDI A4 0912

S

Sherman Parts

CAPA HOOD PANEL ASSY GEN 3; STEEL AUDI A4 0508

CYLINDER HEAD GASKET

Dana

CYLINDER HEAD GASKET

ENGINE CRANKSHAFT SEAL

Dana

ENGINE CRANKSHAFT SEAL

AUDI A4/A6/A8 96-99 A4 01

Metra Electronics

AUDI A4/A6/A8 96-99 A4 01

BRAKE ROTR

Raybestos Brakes

BRAKE ROTR

Regionmax auto part

Regionmax

LH HEADLAMP ASSY COMPOSITE W/HALOGEN AUDI A4 0508

LH HEADLAMP ASSY COMPOSITE; 4DR SDN/4DR WGN; HALOGEN; A4 0205

Regionmax

LH HEADLAMP ASSY COMPOSITE; 4DR SDN/4DR WGN; HALOGEN; A4 0205

Raybestos Brakes auto part

Raybestos Brakes

HARDWARE- HYDRAULICS

M

Moog

TIE ROD

Metra Electronics auto part

Metra Electronics

AUDI Q3 (TYP 8U) (W/CONCERT RADIO)

DISC BRAKE ROTR

Raybestos Brakes

DISC BRAKE ROTR

ENGINE CRANKSHAFT SEAL

Dana

ENGINE CRANKSHAFT SEAL

BRAKE ROTR

Raybestos Brakes

BRAKE ROTR

Jet Performance Products auto part

Jet Performance Products

JET XCELERATOR

J

Jet Performance Products

~(1 lbs. 7X7X2)~ V-Force Plus

M

Metra Electronics

AUDI (WITH CONCERT RADIO) HDMI AND

NEW WATER PUMP

Derale

NEW WATER PUMP

DISC BRAKE ROTOR

Raybestos Brakes

DISC BRAKE ROTOR

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

C

Covercraft

CARGO LINER CARHARTT AUDI A4

BRAKE CALIPER & BRACKET

Raybestos Brakes

BRAKE CALIPER & BRACKET

CARGO LINER CARHARTT AUDI A4

Covercraft

CARGO LINER CARHARTT AUDI A4

Driven Racing Oil auto part

Driven Racing Oil

SYNTHETIC DUAL CLUTCH FLUID PALLET

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

Metra Electronics auto part

Metra Electronics

AUDI A4 (8K) A5 (8TF/8/F7/8TA) 2009

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

D

Dana

GASKET, CYLINDER HEAD

Derale auto part

Derale

NEW WATER PUMP WITH BACK HOUSING

R

Ram Clutch

POWERGRIP CLUTCH SET JEEP 10.5 X 1 1/810

DISC BRAKE ROTOR

Raybestos Brakes

DISC BRAKE ROTOR

NEW WATER PUMP

Derale

NEW WATER PUMP

ENGINE CRANKSHAFT SEAL

Dana

ENGINE CRANKSHAFT SEAL

Morimoto Lighting auto part

Morimoto Lighting

D2S: OSRAM 66240XN2 (4200K / SET)

Raybestos Brakes auto part

Raybestos Brakes

BRAKE ROTOR

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

R

Raybestos Brakes

BRAKE CALIPER & BRACKET

M

Metra Electronics

AUDI A4 (8K) A5 (8TF/8/F7/8TA) 2009

NON-AMPLIFIED AND AMPLIFIED DATA IN

Metra Electronics

NON-AMPLIFIED AND AMPLIFIED DATA IN

R

Raybestos Brakes

HARDWARE- HYDRAULICS

Morimoto Lighting auto part

Morimoto Lighting

2014-2021 TUNDRA STAGE 3 MORIMOTO X

R

Raybestos Brakes

BRAKE CALIPER

Raybestos Brakes auto part

Raybestos Brakes

BRAKE CALIPER

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

BRAKE CALIPER

Raybestos Brakes

BRAKE CALIPER

BRAKE MASTER CYLINDER

Raybestos Brakes

BRAKE MASTER CYLINDER

BRAKE ROTR

Raybestos Brakes

BRAKE ROTR

DISC BRAKE ROTOR

Raybestos Brakes

DISC BRAKE ROTOR

DISC BRAKE ROTOR

Raybestos Brakes

DISC BRAKE ROTOR

R

Raybestos Brakes

BRAKE CALIPER & BRACKET

BRAKE ROTOR

Raybestos Brakes

BRAKE ROTOR

PREMIUM NEW SEMI LOADED CALIPER

Raybestos Brakes

PREMIUM NEW SEMI LOADED CALIPER

WHEEL BEARING AND HUB ASSEMBLY

Moog

WHEEL BEARING AND HUB ASSEMBLY

BRAKE MASTER CYLINDER

Raybestos Brakes

BRAKE MASTER CYLINDER

BRAKE CALIPER & BRACKET

Raybestos Brakes

BRAKE CALIPER & BRACKET

RH TAILLAMP ASSY OUTER; SEDAN; LED TYPE; A4 0912

Regionmax

RH TAILLAMP ASSY OUTER; SEDAN; LED TYPE; A4 0912

R

Raybestos Brakes

FRICTION CALIPERS

DISC BRAKE ROTR ONLY

Raybestos Brakes

DISC BRAKE ROTR ONLY

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