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 Category ignitions and electrical Parts

301 parts available

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

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30-Day Returns
NGK auto part

NGK

NGK Ruthenium HX Spark Plug Box of 4 (FR6AHX-S)

NGK auto part

NGK

NGK Single Platinum Spark Plug Box of 4 (BKR6EGP)

NGK auto part

NGK

NGK Ruthenium HX Spark Plug Box of 4 (FR6BHX-S)

NGK auto part

NGK

NGK Laser Platinum Spark Plug Box of 4 (PLFER7A8EG)

NGK auto part

NGK

NGK Iridium Spark Plug Box of 4 (BKR6EIX-11)

NGK auto part

NGK

NGK Iridium Spark Plug Box of 4 (BKR6EIX)

NGK auto part

NGK

NGK 2005-01 VW Passat COP Pencil Type Ignition Coil

NGK auto part

NGK

NGK Ruthenium HX Spark Plug Box of 4 (LFER7BHX)

NGK auto part

NGK

NGK Multi-Ground Spark Plug Box of 4 (BKR6EQUP)

aFe power module

aFe

aFe Scorcher GT Module 15-16 Audi A3 1.8/2.0T

aFe power module

aFe

aFe Scorcher GT Module 09-16 Audi A4 B8 2.0T

AUDI RELAY

STANDARD IGN

AUDI RELAY

CRANKSHAFT SENSOR

STANDARD IGN

CRANKSHAFT SENSOR

MULTI FUNCTION CONNECTOR

STANDARD IGN

MULTI FUNCTION CONNECTOR

SPEED SENSOR

STANDARD IGN

SPEED SENSOR

SPEED SENSOR

STANDARD IGN

SPEED SENSOR

CRANKSHAFT SENSOR CONNECTOR

STANDARD IGN

CRANKSHAFT SENSOR CONNECTOR

CRANKSHAFT SENSOR

STANDARD IGN

CRANKSHAFT SENSOR

SWITCH-OIL PR.

STANDARD IGN

SWITCH-OIL PR.

IGNITION COIL

Walker Products Inc. - Sensors

IGNITION COIL

HEADLAMP WIRING HARNESS

STANDARD IGN

HEADLAMP WIRING HARNESS

SWITCH

STANDARD IGN

SWITCH

S

STANDARD IGN

OIL PRESSURE SWITCH

ENGINE CRANKSHAFT POSITION SENSOR

Walker Products Inc. - Sensors

ENGINE CRANKSHAFT POSITION SENSOR

ENGINE CAMSHAFT POSITION SENSOR

Walker Products Inc. - Sensors

ENGINE CAMSHAFT POSITION SENSOR

IGNITION COIL

Walker Products Inc. - Sensors

IGNITION COIL

INTRMTR COIL ON PLUG

STANDARD IGN

INTRMTR COIL ON PLUG

COIL

STANDARD IGN

COIL

IGNITION COIL

Walker Products Inc. - Sensors

IGNITION COIL

ENGINE CRANKSHAFT POSITION SENSOR

Walker Products Inc. - Sensors

ENGINE CRANKSHAFT POSITION SENSOR

STANDARD IGN auto part

STANDARD IGN

KNOCK SENSORS

STANDARD IGN auto part

STANDARD IGN

RELAY

ENGINE CRANKSHAFT POSITION SENSOR

Walker Products Inc. - Sensors

ENGINE CRANKSHAFT POSITION SENSOR

ENGINE CAMSHAFT/CRANKSHAFT POSITION

Walker Products Inc. - Sensors

ENGINE CAMSHAFT/CRANKSHAFT POSITION

MOTORAD red auto part

MOTORAD

TETHERED FUEL CAP

MOTORAD auto part

MOTORAD

IGNITION COIL

MOTORAD auto part

MOTORAD

ENGINE CAMSHAFT POSITION SENSOR

S

STANDARD IGN

MULTI FUNCTION CONNECTOR

ENGINE CAMSHAFT POSITION SENSOR

Walker Products Inc. - Sensors

ENGINE CAMSHAFT POSITION SENSOR

IGNITION COIL

Walker Products Inc. - Sensors

IGNITION COIL

IGNITION COIL

Walker Products Inc. - Sensors

IGNITION COIL

STANDARD IGN auto part

STANDARD IGN

COIL ON PLUG COIL

STANDARD IGN auto part

STANDARD IGN

INTRMTR SNSR-SPEED

STANDARD IGN auto part

STANDARD IGN

CAMSHAFT SENSOR CONNECTOR

STANDARD IGN auto part

STANDARD IGN

MULTI FUNCTION CONNECTOR

STANDARD IGN auto part

STANDARD IGN

CAMSHAFT SENSOR

DELPHI auto part

DELPHI

CAMSHAFT POSITION SENSOR

STANDARD IGN auto part

STANDARD IGN

SPEED SENSOR

DELPHI auto part

DELPHI

IGNITION COIL - PENCIL

DELPHI auto part

DELPHI

IGNITION COIL - COIL ON PLUG

D

DELPHI

STABILIZER BAR LINK

Autolite auto part

Autolite

FLAT PACK SPARK PLUG - 48

Spark Plug Silver Racing

Brisk Spark Plugs

Spark Plug Silver Racing

Spark Plug Silver Racing

Brisk Spark Plugs

Spark Plug Silver Racing

Spark Plug Silver Racing

Brisk Spark Plugs

Spark Plug Silver Racing

AD-ADXSVI AUDI CAN INTERFACE 2006-2013

Metra Electronics

AD-ADXSVI AUDI CAN INTERFACE 2006-2013

AFTRMARKET ANTENNA TO VW CABLE

Metra Electronics

AFTRMARKET ANTENNA TO VW CABLE

8805 AUDI/BMW/MERCEDES/VW FACTORY ANTENNA W/FLAT PLUG ANTENNA ADAPTER

Metra Electronics

8805 AUDI/BMW/MERCEDES/VW FACTORY ANTENNA W/FLAT PLUG ANTENNA ADAPTER

AUDI A3 A4 1996-2001 SPEAKER ADAPTER - 6 TO 6 3/4IN

Metra Electronics

AUDI A3 A4 1996-2001 SPEAKER ADAPTER - 6 TO 6 3/4IN

8805 AUDI/BMW/MERCEDES/VW FACTORY RADIO W/FLAT CONNECTOR TO AFTERMARKET ANTENNA

Metra Electronics

8805 AUDI/BMW/MERCEDES/VW FACTORY RADIO W/FLAT CONNECTOR TO AFTERMARKET ANTENNA

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