QUATTRO MEETS PRACTICALITY
B5 through B9 — Audi's compact sedan with available Quattro AWD and turbo power.
Audi A4 HERITAGE
THE QUATTRO COMPACT
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
CATEGORIES
Top product categories for the Audi A4
BRANDS
Top brands for Audi A4 builds
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.

Victor Reinz
Engine Valve Cover Gasket - 71-36774-00

Victor Reinz
Engine Timing Cover Gasket - 71-38942-00

Mahle
A/C Receiver Drier

Victor Reinz
Engine Valve Cover Gasket - 71-40486-00
Mahle
A/C Receiver Drier

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

Hella
CRANKSHAFT-SENSOR

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

Dorman
CONTROL ARM
Stoptech
SEMI-LOADED CALIPER

Victor Reinz
Engine Valve Cover Gasket - 71-36044-00
Mahle
Sleeve Assembly Ring Set VW Ring Set 2.0L A3 TT Beetle CC EOS Golf Eng. Code CAWB CBFA

Victor Reinz
Engine Valve Cover Gasket Set - 71-35187-00

Victor Reinz
Exhaust Manifold Gasket Set - 71-31958-00

Victor Reinz
Exhaust Manifold Gasket - 71-31802-00

Victor Reinz
Engine Intake Manifold Gasket - 71-33215-00

Dorman
IDLER PULLEY

Bosch
BLEEDER VALVE
Bosch
PARTS SET

Bosch
DISC BRAKE PADS

Bosch
KNOCK SENSOR

Victor Reinz
Engine Water Pump Gasket - 71-38928-00
Stoptech
PREMIUM TIE ROD END

Victor Reinz
Engine Oil Pan Gasket - 71-31706-00

Victor Reinz
Engine Oil Filter Adapter Gasket - 71-37576-00
Clevite
VALVE COVER SET

Victor Reinz
Engine Valve Cover Gasket - 71-31697-00
Clevite
AUDI S4 CABRIOLET 4.2L 20042008 MAHLE FUEL FILTER

Mahle
AUDI 2671CC 2.7L BEL APB 2000-2006
Victor Reinz
Engine Valve Cover Gasket Set - 15-10116-01

Gates
Gates Power Steering Pressure Line Hose Assembly
Stoptech
C-TEK Semi-Metallic Brake

Hella
SENSOR PARKING ASSIST

Victor Reinz
Engine Intake Manifold Gasket Set - 71-36072-00
Stoptech
PREMIUM SWAY BAR LINK

Victor Reinz
Engine Intake Manifold Gasket - 71-31701-00
Clevite
AUDI 2995CC 3.0L 3123CC 3.2L 2008 VALVE COVER GASKET (RIGHT)
Clevite
VWPASS 1.8L 20VALVE DOHC TURBO 19982003 INTAKE MANIFOLD GASKET

Hella
IGNITION COIL

Victor Reinz
Fuel Injection Plenum Gasket - 71-31702-00

Bosch
DISC BRAKE PADS
Clevite
AUDI 3123CC 3.2L BKH CALA CALB 20052012 THROTTLE BODY GASKET

Victor Reinz
Engine Intake Manifold Gasket Set - 11-37599-01

NGK
ENGINE CRANKSHAFT POSITION SENSOR

NGK
ENGINE CRANKSHAFT POSITION SENSOR

Mahle
TURBOCHARGER MOUNTING GASKET SET
Clevite
AUDI A4 2.0L TDI 3.2L A5 3.2L Q5 3.2L S5 4.2L 0809 MAHLE CABIN AIR FILTER

Mahle
AUDI/VW 1.8L AND 2.0L 2013-2018 TURBOCHARGED Fuel Injection O-Ring
Clevite
AUDI 2995CC 3.0L 3123CC 3.2L 2008 VALVE COVER SET
Mahle
Cylinder Head Gasket VW-Pass 2771cc 2.8L ATQ 1998-2005

Mahle
AUDI 1.8L 1781CC 1997-2006 ATW AWM BEA AMB
Mahle
AUDI 3.0L 3.2L DOHC 24V 2005-2012
Clevite
AUDI 3123CC 3.2L BKH 20052009 VALVE COVER SET
Clevite
AUDI A4 1.8L TURBO 2.8L 19962001 CABRIOLET 2.8L AAH AFC 1995 MAHLE CABIN AI

Clevite
AUDI A4 2.0L TDI 3.2L A6 3.2L 4.2L A8 R8 RS4 S4 4.2L S6 & S8 5.2L MAHLE

Denso
AIR FILTER
Clevite
CONNECTING ROD BEARING SE
Clevite
VOLKSWAGEN 1588CC 1780CC 1781CC 1984CC ENGINES CONNECTING ROD BEARING SET

Hella
SENSOR PARKING ASSIST

Victor Reinz
Exhaust Pipe Flange Gasket - 71-24057-20
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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- Performance gain estimates based on real-world results
- Save your garage and track every part you've installed