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.

Free Shipping
30-Day Returns
ENGINE OIL LEVEL SENSOR

STANDARD IGN

ENGINE OIL LEVEL SENSOR

ENGINE OIL LEVEL SENSOR

STANDARD IGN

ENGINE OIL LEVEL SENSOR

S

STANDARD IGN

FUEL INJECTOR MFI

S

STANDARD IGN

FUEL FEED LINE

S

STANDARD IGN

CAMSHAFT SENSOR

S

STANDARD IGN

FUEL INJECTOR

VACUUM PUMP

STANDARD IGN

VACUUM PUMP

S

STANDARD IGN

VACUUM PUMP

INTERMOTOR BLOWER MOTOR R

STANDARD IGN

INTERMOTOR BLOWER MOTOR R

BLOWER MOTOR RESISTOR

STANDARD IGN

BLOWER MOTOR RESISTOR

INTERMOTOR BLOWER MOTOR R

STANDARD IGN

INTERMOTOR BLOWER MOTOR R

BLWR MOTOR RESISTOR

STANDARD IGN

BLWR MOTOR RESISTOR

INTERMOTOR TURBOCHARGER - NEW - GAS

STANDARD IGN

INTERMOTOR TURBOCHARGER - NEW - GAS

ENGINE OIL LEVEL SENSOR CONNECTOR

STANDARD IGN

ENGINE OIL LEVEL SENSOR CONNECTOR

TRUNK BIKE RACK PREMIUM

G3 S.P.A

TRUNK BIKE RACK PREMIUM

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

INTERMOTOR FUEL INJECTION

STANDARD IGN

INTERMOTOR FUEL INJECTION

MASS AIR FLOW SENSOR

Walker Products Inc. - Sensors

MASS AIR FLOW SENSOR

R

REMY

REMANUFACTURED ALTERNATOR

R

REMY

REMANUFACTURED ALTERNATOR

R

REMY

IMPORT ALTERNATOR

R

REMY

REMANUFACTURED ALTERNATOR

REMANUFACTURED STARTER

REMY

REMANUFACTURED STARTER

E

Extreme Dimensions

Universal Carbon Creations DriTech Vortex Canards - 4 Piece (S)

R

REMY

REMANUFACTURED ALTERNATOR

E

Extreme Dimensions

AUDI A4 OTG FRONT BUMPER

REMANUFACTURED ALTERNATOR

REMY

REMANUFACTURED ALTERNATOR

Euro Ultra-Premium Brake Pads - Rear

AKEBONO

Euro Ultra-Premium Brake Pads - Rear

E

Extreme Dimensions

2006-2008 Audi A4 S4 B7 Duraflex DTM Look Front Bumper Cover - 1 Piece

EVAPORATIVE LEAK DETECTION PUMP

MOTORAD

EVAPORATIVE LEAK DETECTION PUMP

TIMING ACTUATOR DAYCO

DAYCO HYDRAULIC

TIMING ACTUATOR DAYCO

S

STANDARD IGN

INTERMOTOR FUEL INJECTION

R

REMY

REMANUFACTURED ALTERNATOR

2009-2012 Audi A4 B8 4DR R-1 Rear Diffuser - 1 Piece

Extreme Dimensions

2009-2012 Audi A4 B8 4DR R-1 Rear Diffuser - 1 Piece

REMANUFACTURED STARTER

REMY

REMANUFACTURED STARTER

LOCKS - IGNITION

STANDARD IGN

LOCKS - IGNITION

D

DAYCO HYDRAULIC

BALANCER

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

SEMI-MET BRAKE PADS

WAGNER BRAKE

SEMI-MET BRAKE PADS

THERMOSTAT

MOTORAD

THERMOSTAT

IMPORT ALTERNATOR

REMY

IMPORT ALTERNATOR

~(28 lbs. 19X19X10)~ TSW SEBRING 17x8.0 5/114.3 ET40 CB76.1 SILVER W/ MIRROR CUT FACE

TSW Alloy Wheels

~(28 lbs. 19X19X10)~ TSW SEBRING 17x8.0 5/114.3 ET40 CB76.1 SILVER W/ MIRROR CUT FACE

REMANUFACTURED ALTERNATOR

REMY

REMANUFACTURED ALTERNATOR

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

SPORTFRAME HITCH

Hidden Hitch

SPORTFRAME HITCH

WATER PUMP KIT DAYCO

DAYCO HYDRAULIC

WATER PUMP KIT DAYCO

REMANUFACTURED ALTERNATOR

REMY

REMANUFACTURED ALTERNATOR

ST Sport-tech Suspension Kit Audi A4 (8E/B6-B7) Sedan Quattro

Suspension Techniques

ST Sport-tech Suspension Kit Audi A4 (8E/B6-B7) Sedan Quattro

RADIATOR HOSE

DAYCO HYDRAULIC

RADIATOR HOSE

DRIVE SHAFT

TRAKMOTIVE

DRIVE SHAFT

M

MONROE SHOCKS & STRUTS

OESPECTRUM SHOCK ABSORBER

INTRMTR FL INJ- MFI

STANDARD IGN

INTRMTR FL INJ- MFI

ENGINE OIL FILLER CAP

MOTORAD

ENGINE OIL FILLER CAP

S

Suspension Techniques

SPORT SPRINGS

S

STANDARD IGN

FUEL INJECTOR

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

ENGINE VARIABLE VALVE TIMING (VVT)

Walker Products Inc. - Sensors

ENGINE VARIABLE VALVE TIMING (VVT)

VACUUM PUMP

STANDARD IGN

VACUUM PUMP

S

Stainless Steel Brakes

TRI-POWER QUICK CHANGE

Placeholder image

Suspension Techniques

ST Coilover Kit 09-14 Audi A4/A4 Quattro (B8)

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