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.

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30-Day Returns
Ctrl Arm Kit, Up Adj, CC,B9 S4

034Motorsport

Ctrl Arm Kit, Up Adj, CC,B9 S4

Ctrl Arm Kit, Lwr,Stl Up,B5 C5

034Motorsport

Ctrl Arm Kit, Lwr,Stl Up,B5 C5

CONTROL ARM KIT,UP ADJ,B8 TRA

034Motorsport

CONTROL ARM KIT,UP ADJ,B8 TRA

Ign Coil, 6pk, Ylw, MQB Style

034Motorsport

Ign Coil, 6pk, Ylw, MQB Style

Hose, Turbo Inlet, A4, TT MAF

034Motorsport

Hose, Turbo Inlet, A4, TT MAF

ADAPTER,FUEL PUMP,39MM IN TAN

034Motorsport

ADAPTER,FUEL PUMP,39MM IN TAN

INJECTOR ADAPTER,RS4 6INJECTO

034Motorsport

INJECTOR ADAPTER,RS4 6INJECTO

X34, Air Scoop, Lrg IC, B9 A4

034Motorsport

X34, Air Scoop, Lrg IC, B9 A4

Wheel Spacer Set, 10mm-10mm, 6

034Motorsport

Wheel Spacer Set, 10mm-10mm, 6

Mount,Trans,SD,A4 w- V6 H-WARE

034Motorsport

Mount,Trans,SD,A4 w- V6 H-WARE

Stud-Nut, 65mm, Ball Seat, 20

034Motorsport

Stud-Nut, 65mm, Ball Seat, 20

Air Filter, 034, 5.0" Inlet

034Motorsport

Air Filter, 034, 5.0" Inlet

Mahle Engine Piston 033 21 01

Mahle

Mahle Engine Piston 033 21 01

Mahle Engine Piston 033 04 00

Mahle

Mahle Engine Piston 033 04 00

0

034Motorsport

D+TUNE, 2.0T Simos 18.4, Stg2

0

034Motorsport

D+TUNE, 2.0T Simos 18.4, Stg1

D+TUNE, 2.0 TFSI B8 ST1

034Motorsport

D+TUNE, 2.0 TFSI B8 ST1

0

034Motorsport

D+TUNE, EA113HO 20T FSI LO420

M

Mahle

Mahle Engine Piston 033 98 01

Mahle Engine Piston 030 65 02

Mahle

Mahle Engine Piston 030 65 02

I

Industrial Injection

Industrial Injection BorgWarner Audi/VW 2.0 TFSI 03 Turbo - BW-53039880105

Inustrial Injection GT1749V Turbocharger Serv VW AUDI - 717858-5010S

Industrial Injection

Inustrial Injection GT1749V Turbocharger Serv VW AUDI - 717858-5010S

SUNCOAST D Clutch Hub 35570-70K

Sun Coast Converters

SUNCOAST D Clutch Hub 35570-70K

I

Industrial Injection

Industrial Injection K04 Core Assembly - BW-53047100511

Industrial Injection K04 VW/ Audi Upgrade turbo - BW-53049887500

Industrial Injection

Industrial Injection K04 VW/ Audi Upgrade turbo - BW-53049887500

Eibach Set of 4 Springs - 15107.140

Eibach

Eibach Set of 4 Springs - 15107.140

M

Mahle

Mahle Radiator 70822637NA

NGK VWC029 WIRE SET CL5 Ignition Wire Set VWC029

NGK

NGK VWC029 WIRE SET CL5 Ignition Wire Set VWC029

P

PowerStop

Power Stop SEMI-COATED ROTOR KIT Audi A4 allroad 2020-25 Audi A4 Quattro 2020-25 Audi A5 Quattro 2020-24 Audi A5 Sportback 2020-25 SC8653

0

034Motorsport

D+TUNE, B9 A4/A5 DL382 Stage 1

0

034Motorsport

D+TUNE, 29TFSI B9 RS MG1 ST1+>

Industrial Injection K03-119 Turbocharger AUDI - BW-53039880106

Industrial Injection

Industrial Injection K03-119 Turbocharger AUDI - BW-53039880106

Mahle Engine Cooling Fan 70819945NA

Mahle

Mahle Engine Cooling Fan 70819945NA

Mahle HVAC Blower Motor AB114000S

Mahle

Mahle HVAC Blower Motor AB114000S

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WeatherTech

WeatherTech 09-11 Audi A4/S4/RS4 Front and Rear Rubber Mats - Black

C

Centerforce

Centerforce Dual Friction Clutch Pressure Plate and Disc Set - DF205189

NGK U2010 CL11 Ignition Coil U2010

NGK

NGK U2010 CL11 Ignition Coil U2010

Carillo Audi/VW 1.8L 20 Valve 20mm pin 81mm 9.5:1 - SC7610

Carrillo

Carillo Audi/VW 1.8L 20 Valve 20mm pin 81mm 9.5:1 - SC7610

Mahle A/C Evaporator Core AE205000P

Mahle

Mahle A/C Evaporator Core AE205000P

P

PowerStop

Power Stop AUTOSPECIALTY BRAKE KIT Audi A4 allroad 2020-25 Audi A4 Quattro 2020-25 Audi A5 Quattro 2020-24 Audi A5 Sportback 2020-25 KOE8653

Power Stop AUTOSPECIALTY BRAKE KIT Audi A4 2020 Audi A4 Quattro 2021-25 KOE8654

PowerStop

Power Stop AUTOSPECIALTY BRAKE KIT Audi A4 2020 Audi A4 Quattro 2021-25 KOE8654

Power Stop AUTOSPECIALTY BRAKE KIT Audi A4 allroad 2020-25 Audi A4 Quattro 2020-25 Audi A5 Quattro 2020-24 Audi A5 Sportback 2020-25 KOE8652

PowerStop

Power Stop AUTOSPECIALTY BRAKE KIT Audi A4 allroad 2020-25 Audi A4 Quattro 2020-25 Audi A5 Quattro 2020-24 Audi A5 Sportback 2020-25 KOE8652

M

Mahle

Mahle Engine Piston Ring Set 42224CP.020

0

034Motorsport

D+TUNE, B7 A4 2.0T FSI, K04

0

034Motorsport

D+TUNE, EA113 LONG 20T FSI ST1

Wheel Pros Rotiform 18X9 WGR-M 5X112 35 57.1 R768189045 3525

Rotiform

Wheel Pros Rotiform 18X9 WGR-M 5X112 35 57.1 R768189045 3525

AKLIMATE 235/40R19 96V XL 26.7

Wheel Pros, LLC

AKLIMATE 235/40R19 96V XL 26.7

0

034Motorsport

D+TUNE, 2.0T B9 Q5, Stg2

MagnaFlow USE 106-0744106-0320

Magnaflow

MagnaFlow USE 106-0744106-0320

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Putco

Putco Plug and Play Load Resistor System - Fits 3157

WeatherTech Grey Front Rear FloorLiner HP Fits -21-25 Audi 469371-469072IM

WeatherTech

WeatherTech Grey Front Rear FloorLiner HP Fits -21-25 Audi 469371-469072IM

Mahle Engine Crankshaft Main Bearing Set MS-2279H

Mahle

Mahle Engine Crankshaft Main Bearing Set MS-2279H

WeatherTech Tan Front Rear FloorLiner HP Fits -21-25 Audi 459371-459072IM

WeatherTech

WeatherTech Tan Front Rear FloorLiner HP Fits -21-25 Audi 459371-459072IM

Mahle Engine Piston 034 94 02

Mahle

Mahle Engine Piston 034 94 02

Placeholder image

Putco

Putco Nitro-Lux - H11 / H9 / H8 - (Pair)

M

Mahle

Mahle A/C Compressor 72440492NA

WeatherTech Cocoa Front Rear FloorLiner HP Fits -21-25 Audi 479371-479072IM

WeatherTech

WeatherTech Cocoa Front Rear FloorLiner HP Fits -21-25 Audi 479371-479072IM

MagnaFlow Exhaust Kit - 97-01 Audi A4 Quattro 1.8L106-0388

Magnaflow

MagnaFlow Exhaust Kit - 97-01 Audi A4 Quattro 1.8L106-0388

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WeatherTech

WeatherTech 95-11 Audi A6/S6 Front and Rear Rubber Mats - Black

Placeholder image

WeatherTech

WeatherTech 64-79 Volkswagen Bug Front and Rear Rubber Mats - Black

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