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

8166 parts available

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

Free Shipping
30-Day Returns
NEW MASTER CYLINDER

Dorman

NEW MASTER CYLINDER

C

Covercraft

COLGAN ORGL FRONT END BRA

SPL PARTS INC. auto part

SPL PARTS INC.

SPL Parts 09-16 Audi B8 & B8.5 A4/A5/S4/S5 Front Endlinks

B

Brembo

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

D

Dorman

HIGH INTENSITY DISCHARGE CONTROL BA

Dorman auto part

Dorman

ENGINE WATER PUMP ASSEMBLY

ENGINE COOLANT WATER OUTLET

Dorman

ENGINE COOLANT WATER OUTLET

DISC BRAKE ROTOR

Brembo

DISC BRAKE ROTOR

CONTROL ARM BALL JNT

Dorman

CONTROL ARM BALL JNT

Megan Lowering Springs Audi A4 02-06 FWD 31 LBs Spring Rate: Front K1-202 K2-262 Rear K1-353 K2-353

Megan Racing

Megan Lowering Springs Audi A4 02-06 FWD 31 LBs Spring Rate: Front K1-202 K2-262 Rear K1-353 K2-353

Aud A4/S4 B8 Chassis 0

Planted Technology

Aud A4/S4 B8 Chassis 0

Cloyes Gear & Products auto part

Cloyes Gear & Products

ENGINE TIMING CHAIN KIT

Aud A4/S4 B7 Chassis 0

Planted Technology

Aud A4/S4 B7 Chassis 0

FLEX PIPE VW PASSAT

Walker Exhaust

FLEX PIPE VW PASSAT

D

Dorman

REAR DRIVESHAFT

BRAKE DISC

Brembo

BRAKE DISC

Aud S4 B5 Chassis 00-0

Planted Technology

Aud S4 B5 Chassis 00-0

Aud S4 B5 Chassis 00-0

Planted Technology

Aud S4 B5 Chassis 00-0

D

Dorman

CONTROL ARM

B

Brembo

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

Dorman auto part

Dorman

DOOR LOCK ACTUATOR

D

Dorman

CONTROL ARM W/ BALL JOINT

BRAKE HYDRAULIC HOSE

Dorman

BRAKE HYDRAULIC HOSE

D

Dorman

INTGR LATCH ACTUATOR

D

Dorman

CONTROL ARM W/ BALL JOINT

Dorman auto part

Dorman

HIGH INTENSITY DISCHARGE CONTROL MO

NEW MASTER CYLINDER

Dorman

NEW MASTER CYLINDER

D

Dorman

REAR DRIVESHAFT

Aud A4/S4 B7 Chassis 0

Planted Technology

Aud A4/S4 B7 Chassis 0

REGULATOR ONLY POWER

Dorman

REGULATOR ONLY POWER

JE Pistons auto part

JE Pistons

VW TS1 2.0T TSI 22MM PIN 83.5MM 10

Bosch auto part

Bosch

SPICER U JOINT PRESS

R&R CALIPER ONLY EPB

Stoptech

R&R CALIPER ONLY EPB

B

Bosch

SHEAVE PULLING ATTACHMENT

JE Pistons auto part

JE Pistons

VW TS1 2.0 23MM PIN 82.5MM 9.6

J

JE Pistons

VW 2.0T FSI 20MM PIN 83MM 9.25 FSR

BC Racing coilovers

BC Racing

BC Racing BR Series Coilovers For 17- Audi A4/S4 (48.5mm Front Strut) With 10kg/8kg Spring Rates

H

Hella

VACUUM PUMP

Bosch auto part

Bosch

STARTER BATTERY

B

Bosch

OXYGEN SENSOR

J

JE Pistons

VOLKSWAGEN 1.8T 5V -7CC DISH 81.00M

3

3D MAXpider

3D ELEGANT BLACK FLOOR MAT

Magnaflow auto part

Magnaflow

CONV DF 2002 - 2004 AUDI A4 QUATTRO

IGNITION COIL

Hella

IGNITION COIL

G

Gates

PLASITC 1 OUTLET (AUXILIARY)

OXYGEN SENSOR

Bosch

OXYGEN SENSOR

Bosch roof rack

Bosch

STEERING RACK

PLANAR SENSOR

Bosch

PLANAR SENSOR

South Bend Clutch auto part

South Bend Clutch

CLUTCH KIT K70007-SS-O-SMF, STAGE 3

JE Pistons auto part

JE Pistons

VW 1.8T 20V 20MM PIN 82.5MM 8.5 FSR

JE Pistons auto part

JE Pistons

VW 1.8T 20V 20MM PIN 82.5MM 8.5 FSR

JE Pistons auto part

JE Pistons

VW 1.8T 20V 20MM PIN 82MM 8.5 FSR

Bosch auto part

Bosch

REMAN ALTERNATOR

STEERING PUMP MECH

Bosch

STEERING PUMP MECH

J

JE Pistons

VW 2.0T FSI 83.5 KIT

JE Pistons auto part

JE Pistons

VW 2.0T FSI 82.5 KIT

N

NGK

ACCELERATOR PEDAL SENSOR

OIL PAN

Dorman

OIL PAN

S

Stoptech

STR60/30-34-36/34F

Bosch roof rack

Bosch

STEERING RACK

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