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
MOTORAD auto part

MOTORAD

THERMOSTAT

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

MASS AIR FLOW SENSOR

Walker Products Inc. - Sensors

MASS AIR FLOW SENSOR

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

DAYCO HYDRAULIC auto part

DAYCO HYDRAULIC

WATER PUMP KIT

D

DAYCO HYDRAULIC

WATER PUMP BELT AND TENSI

R

REMY

REMANUFACTURED ALTERNATOR

R

REMY

REMANUFACTURED ALTERNATOR

DAYCO HYDRAULIC auto part

DAYCO HYDRAULIC

TENSIONER

S

STANDARD IGN

PARKING ASSIST SENSOR

STANDARD IGN auto part

STANDARD IGN

RELAY

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

TRAKMOTIVE auto part

TRAKMOTIVE

ALL NEW CV AXLE

T

TRAKMOTIVE

ALL NEW CV AXLE

VALEO light bar

VALEO

V-RF7 LED LIGHT BAR SPOT KIT

V

VALEO

V-RF50 LED LIGHT BAR COMBO KIT

U

USA Standard (Yukon)

Manual Transmission Bearing Kit 89 and UP VW Black Rear Cover

STANDARD IGN auto part

STANDARD IGN

COOLING FAN MODULE

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

REMY red auto part

REMY

REMANUFACTURED ALTERNATOR

MASS AIR FLOW SENSOR ASSEMBLY

Walker Products Inc. - Sensors

MASS AIR FLOW SENSOR ASSEMBLY

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

USA Standard (Yukon) black auto part

USA Standard (Yukon)

USA Standard Manual Transmission Bearing Kit 1989 VW Black Rear Cover M T BEARING KIT 89 UP VW BLA

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

Extreme Dimensions auto part

Extreme Dimensions

2009-2012 Audi A4 B8 Duraflex Dante Rear Wing Spoiler - 1 Piece

S

STANDARD IGN

DIVERTER VALVE

MASS AIR FLOW SENSOR

Walker Products Inc. - Sensors

MASS AIR FLOW SENSOR

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

DAYCO HYDRAULIC auto part

DAYCO HYDRAULIC

BELT TENSIONER AND IDLER

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

MASS AIR FLOW SENSOR

Walker Products Inc. - Sensors

MASS AIR FLOW SENSOR

The Wheel Group black auto part

The Wheel Group

KRAZE LUSSO KR190 GLOSS BLACK 17X8 5-112 38MM 66.56MM

T

TIMKEN

SL260529;A/AM-SRC SEAL

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

STANDARD IGN auto part

STANDARD IGN

VEHICLE SPEED SENSOR

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

Goodyear auto part

Goodyear

SERPENTINE BELT TENSIONER FEADTENSIONER

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

S

STANDARD IGN

INTAKE MANIFOLD ACTUATOR

Omega Tool Corporation roof rack

Omega Tool Corporation

RACK AND PINION

S

Suspension Techniques

ST Sport-tech Lowering Springs Audi A4 (8E/B6-B7) Convertible Wagon Quattro

TIMKEN auto part

TIMKEN

PRESET PRE-GREASED AND PRE-SEALED

MASS AIR FLOW SENSOR

Walker Products Inc. - Sensors

MASS AIR FLOW SENSOR

M

MONROE SHOCKS & STRUTS

QUICK-STRUT ASSEMBLY

WAGNER BRAKE auto part

WAGNER BRAKE

SEMI-MET BRAKE PADS

Extreme Dimensions auto part

Extreme Dimensions

2006-2008 Audi A4 S4 B7 4DR Duraflex RS4 Wide Body Front Fenders - 2 Piece

U

USA Standard (Yukon)

USA Standard Manual Transmission Bearing Kit 1989 VW Black Rear Cover w Synchro M T BEARING KIT 89

S

STANDARD IGN

ABS WHEEL SPEED SENSOR WIRE HARNESS

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