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.

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Verified Fitment

Audi A4 Category air and fuel Parts

502 parts available

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

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Cabriolet A4 1.8L Turbo 2002-2005 2.0L Turbo 2005-2008 3.0L 2002-2005

Mahle

Cabriolet A4 1.8L Turbo 2002-2005 2.0L Turbo 2005-2008 3.0L 2002-2005

Audi S4 Cabriolet 4.2L 2004-2008

Mahle

Audi S4 Cabriolet 4.2L 2004-2008

Audi Cabriolet A4 S4 2003-2007 Allroad 2001-2005 A6 S6 2001-2004

Mahle

Audi Cabriolet A4 S4 2003-2007 Allroad 2001-2005 A6 S6 2001-2004

PARTS SET

Bosch

PARTS SET

AIR FILTER

Denso

AIR FILTER

AUDI A4 3.2L 2007> AUDI A5 3.2L AND 4.2L 2007> MAHLE AIR FILTER

Clevite

AUDI A4 3.2L 2007> AUDI A5 3.2L AND 4.2L 2007> MAHLE AIR FILTER

NON-RETURN VALVE

Hella

NON-RETURN VALVE

AIR FILTER ELEMENT

Clevite

AIR FILTER ELEMENT

AUDI A4 1.8L 2.0L 2007> AUDI A5 1.8L 2007> AUDI Q5 2.0L TDI 20112012 MAHLE

Clevite

AUDI A4 1.8L 2.0L 2007> AUDI A5 1.8L 2007> AUDI Q5 2.0L TDI 20112012 MAHLE

C

Clevite

AUDI CABRIOLET A4 S4 20032007 ALLROAD 20012005 A6/S6 20012004 MAHLE CABIN

Cabin Air Filter LA 1294

Mahle

Cabin Air Filter LA 1294

AUDI 1781CC 1.8L (AMB) 2004-2006

Mahle

AUDI 1781CC 1.8L (AMB) 2004-2006

M

Mahle

08-17 Audi/VW 1.8L/2.0L Vacuum Pump Moutning Gasket

MAP SENSOR

Bosch

MAP SENSOR

TURBOCHARGER MOUNTING GASKET SET 05-00 Volkswagen Passat 1.8L; 06-00 Audi A4 A4 Quattro 1.8L

Mahle

TURBOCHARGER MOUNTING GASKET SET 05-00 Volkswagen Passat 1.8L; 06-00 Audi A4 A4 Quattro 1.8L

AUDI VOLKSWAGEN 1.8L 2.7L 2.8L 3.0L 1997-2006

Mahle

AUDI VOLKSWAGEN 1.8L 2.7L 2.8L 3.0L 1997-2006

FUEL FILTER

Bosch

FUEL FILTER

RETAINING RING

Bosch

RETAINING RING

AIR FILTER ELEMENT

Mahle

AIR FILTER ELEMENT

C

Clevite

VW JETTA SCIROCCO RABBIT GOLF GTI W/O 16 VALVE 1990 CABRIO 19952002 MAHLE

CABIN AIR FILTER

Bosch

CABIN AIR FILTER

~(0.8 lbs. 12X8X1)~ Quattro 2004-2000 Allroad Quattro 2005-2001 S4 2009-2004 MAHLE Cabin Air

Mahle

~(0.8 lbs. 12X8X1)~ Quattro 2004-2000 Allroad Quattro 2005-2001 S4 2009-2004 MAHLE Cabin Air

Audi A4 1.8L Turbo 2.8L 1996-2001 Cabriolet 2.8L AAH AFC 1995

Mahle

Audi A4 1.8L Turbo 2.8L 1996-2001 Cabriolet 2.8L AAH AFC 1995

C

Clevite

AUDI S4 CABRIOLET 4.2L 20042008 MAHLE FUEL FILTER

AUDI 2671CC 2.7L BEL APB 2000-2006

Mahle

AUDI 2671CC 2.7L BEL APB 2000-2006

Engine Intake Manifold Gasket - 71-31701-00

Victor Reinz

Engine Intake Manifold Gasket - 71-31701-00

C

Clevite

AUDI 3123CC 3.2L BKH CALA CALB 20052012 THROTTLE BODY GASKET

C

Clevite

AUDI A4 2.0L TDI 3.2L A5 3.2L Q5 3.2L S5 4.2L 0809 MAHLE CABIN AIR FILTER

AUDI/VW 1.8L AND 2.0L 2013-2018 TURBOCHARGED Fuel Injection O-Ring

Mahle

AUDI/VW 1.8L AND 2.0L 2013-2018 TURBOCHARGED Fuel Injection O-Ring

M

Mahle

AUDI 3.0L 3.2L DOHC 24V 2005-2012

C

Clevite

AUDI A4 1.8L TURBO 2.8L 19962001 CABRIOLET 2.8L AAH AFC 1995 MAHLE CABIN AI

AIR FILTER

Denso

AIR FILTER

~(0.2 lbs. 16X6X0)~ VW-PASS 1.8L 20VALVE DOHC TURBO 1998-2003

Mahle

~(0.2 lbs. 16X6X0)~ VW-PASS 1.8L 20VALVE DOHC TURBO 1998-2003

CABIN AIR FILTER

Bosch

CABIN AIR FILTER

Audi Volkswagen 1984cc 2.0L Camshaft Adjuster Magnet Seal

Mahle

Audi Volkswagen 1984cc 2.0L Camshaft Adjuster Magnet Seal

V

Victor Reinz

Fuel Injection Throttle Body Mounting Gasket - 71-16550-00

AIR FILTER

Denso

AIR FILTER

Stainless Bros Bosch MAF Aluminum Flange

Stainless Bros

Stainless Bros Bosch MAF Aluminum Flange

Radium Engineering auto part

Radium Engineering

Radium Engineering VW/Audi EA888 Fuel Rail Plumbing / Port Injection

Go Fast Bits auto part

Go Fast Bits

GFB Mach 2 Atmosphere Conversion Kit-Changes T9107 or T9125 from Recir to Atmosphere

X34, Intake Duct, Gloss, B9

034Motorsport

X34, Intake Duct, Gloss, B9

S34 Accel Pk, Stg 2, B8 A4/A5/

034Motorsport

S34 Accel Pk, Stg 2, B8 A4/A5/

K04-15 KKK TURBO,OEM,UPGRADEK

034Motorsport

K04-15 KKK TURBO,OEM,UPGRADEK

S34, Gloss, B8 2.0T

034Motorsport

S34, Gloss, B8 2.0T

FUEL RAIL,1.8T DROP IN KIT

034Motorsport

FUEL RAIL,1.8T DROP IN KIT

X34, Gloss, B9 A4

034Motorsport

X34, Gloss, B9 A4

P34, B9 A4

034Motorsport

P34, B9 A4

S34 Accel Pk, Stg 1, B8 A4/A5/

034Motorsport

S34 Accel Pk, Stg 1, B8 A4/A5/

0

034Motorsport

P34 Accel Pk, Stg 1, B9 A4/A5/

P34, MAF, B9 A4, ROW

034Motorsport

P34, MAF, B9 A4, ROW

I

Industrial Injection

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

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

Industrial Injection K03-119 Turbocharger AUDI - BW-53039880106

Industrial Injection

Industrial Injection K03-119 Turbocharger AUDI - BW-53039880106

S

STANDARD IGN

ELECTRONIC TB

INTERMOTOR FUEL INJECTION

STANDARD IGN

INTERMOTOR FUEL INJECTION

ELECTRONIC TB

STANDARD IGN

ELECTRONIC TB

INTERMOTOR MASS AIR FLOW

STANDARD IGN

INTERMOTOR MASS AIR FLOW

FUEL INJECTOR MFI

STANDARD IGN

FUEL INJECTOR MFI

CANISTER PURGE SOL

STANDARD IGN

CANISTER PURGE SOL

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.

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  • 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