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
Bosch auto part

Bosch

RE ALTERNATOR

B

Bosch

RE ALTERNATOR

Hella auto part

Hella

ALTERNATOR

Bosch auto part

Bosch

RE ALTERNATOR

Hella auto part

Hella

ALTERNATOR 12V 120A

Bosch auto part

Bosch

REMAN ALTERNATOR

B

Bosch

ASSEMBLY HOSE

B

Bosch

RE ALTERNATOR

Bosch auto part

Bosch

RE ALTERNATOR

B

Bosch

CONNECTED R-1234YF ACS RECOVER REC

NGK auto part

NGK

NGK MOD Ignition Coil Set 4pk Stock #49475

Hella auto part

Hella

ACCELERATOR PEDAL SENSOR

H

Hella

ALTERNATOR 14V 150A

B

Bosch

RE ALTERNATOR

R

RaceChip

PERFORMANCE TUNING CHIP - RS

R

RaceChip

PERFORMANCE TUNING CHIP - GTS + APP

RaceChip black auto part

RaceChip

PERFORMANCE TUNING CHIP - GTS BLACK

Bosch auto part

Bosch

DRIVE END SHIELD

N

NGK

ABS WHEEL SPEED SENSOR

Odyssey auto part

Odyssey

Odyssey Battery Auto/Truck/Heavy Duty & Commercial Performance AGM Battery (49-950)

Odyssey auto part

Odyssey

Odyssey Battery Auto/Truck/Heavy Duty & Commercial Performance AGM Battery (48-720)

Odyssey auto part

Odyssey

Odyssey Battery Auto/Truck/Heavy Duty & Commercial Performance AGM Battery (47-650)

NGK auto part

NGK

NGK Audi A4 / A8 / S6 / RS6 MOD Ignition Coils - Set of 4

APR Tuning auto part

APR Tuning

Ignition Coils PQ35 Style Grey APR

APR Tuning red auto part

APR Tuning

Ignition Coils PQ35 Style Red APR

Ignition Coils Fits Various Audi/Porsche/VW Models Red APR

APR Tuning

Ignition Coils Fits Various Audi/Porsche/VW Models Red APR

APR Tuning catch can

APR Tuning

Catch Can Universal (EA113 PCV Block Off Plate and Fittings Only) APR

ACCEL black auto part

ACCEL

Ignition Coils 2014-2019 Vw/Audi 1.8/2.0L Engines, 4-Pack, Black Fits 2014-2019 Vw Beetle, Golf, Jetta, Passa, Arteon 1.8/2.0L Turbo Engines And Audi A3, A3 Quattro, S3, Tt Quattro, Tt Rs Quattro, 2.0L Turbo Engines, 4-Pack ACCEL

Mishimoto auto part

Mishimoto

Mishimoto 15-21 VW GTI 2.0L Ignition Coil - 4-Pack

Pedal Commander auto part

Pedal Commander

Pedal Commander Audi/Bentley/VW Throttle Controller

Pedal Commander auto part

Pedal Commander

Pedal Commander Hyundai/Kia Throttle Controller

Diode Dynamics red auto part

Diode Dynamics

Diode Dynamics 36mm HP6 LED - Red (Single)

Mishimoto auto part

Mishimoto

Mishimoto 06-08 VW/Audi Five Cylinder Ignition Coil Set

Pedal Commander auto part

Pedal Commander

Pedal Commander Audi/Lamborghini/Porsche/Skoda/VW Throttle Controller

Putco auto part

Putco

Putco High Intensity Discharge Bulb - OEM/4300K - D1S

Bosch auto part

Bosch

Bosch 14V Pencil Type 249 Ignition Coil (OE 06E905115E/06E905115F/06E905115G/95860210200)

Putco auto part

Putco

Putco Plug and Play Load Resistor System - Fits 194/921

Putco auto part

Putco

Putco Plug and Play Load Resistor System - Fits 1157

Bosch auto part

Bosch

Bosch Crankshaft Position Sensor (OE 06A906433C)

Bosch auto part

Bosch

Bosch 14V Pencil Type 247 Ignition Coil (OE 06H905115A/06F905115F/07K905715C/07K905715F/07K905715G)

AntiGravity Batteries auto part

AntiGravity Batteries

Antigravity H6/Group 48 Lithium Car Battery w/Re-Start

Pedal Commander auto part

Pedal Commander

Pedal Commander Audi/Lamborghini/Porsche/Skoda/VW Throttle Controller

Hella auto part

Hella

Hella Bulb 7225 12V 21/4W BAZ15d S8

Hella auto part

Hella

Hella Optilux H9 12V/100W XB Xenon White Bulb (pair)

Hella auto part

Hella

Hella Bulb H1 12V 55W P145S T25 (2)

NGK auto part

NGK

NGK 1998-94 Audi Cabriolet DIS Ignition Coil

NGK auto part

NGK

NGK Volkswagen EuroVan 1997 Direct Fit Oxygen Sensor

NGK auto part

NGK

NGK Double Platinum Spark Plug Box of 4 (PFR7S8EG)

NGK auto part

NGK

NGK Audi 90 1995-1993 Spark Plug Wire Set

NGK auto part

NGK

NGK Audi A4 2001-1997 Spark Plug Wire Set

NGK auto part

NGK

NGK 2005-98 VW Passat DIS Ignition Coil

NGK auto part

NGK

NGK 2009-08 VW Touareg COP Pencil Type Ignition Coil

NGK auto part

NGK

NGK 2015-07 VW Touareg COP Pencil Type Ignition Coil

NGK auto part

NGK

NGK Iridium Spark Plugs Box of 4 (BKR7EIX)

NGK auto part

NGK

NGK Ruthenium HX Spark Plug Box of 4 (FR7BHX-S)

NGK auto part

NGK

NGK Iridium Long Life Spark Plugs Box of 4 (IFR6D10)

NGK auto part

NGK

NGK Laser Platinum Spark Plug Box of 4 (PFR6X-11)

NGK auto part

NGK

NGK 2001-00 VW Passat COP Ignition Coil

aFe throttle controller

aFe

aFe Power Sprint Booster Power Converter 11-18 Audi A7/S7

aFe power module

aFe

aFe 17-20 Audi A3 / 15-20 Audi A4 Scorcher High-Performance Ignition Coil

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