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 exhaust Parts

238 parts available

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

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Magnaflow

MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 51461

Magnaflow auto part

Magnaflow

MagnaFlow 2005-2009 Audi A4 Quattro OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

Magnaflow auto part

Magnaflow

MagnaFlow Direct Fit Catalytic Converter Audi 97-05 A4/A4 Quattro / Volkswagen 00-05 Passat 1.8L

Magnaflow auto part

Magnaflow

MagnaFlow California Grade CARB Compliant Converter Direct-Fit 05-09 Audi A4 / A4 Quattro

Magnaflow auto part

Magnaflow

MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 24175

aFe black axle-back exhaust

aFe

aFe 17-19 Audi A4 (L4-2.0L) MACH Force-Xp Stainless Steel Axle-Back Exhaust System - Black Tip

aFe cat-back exhaust

aFe

aFe 20-21 Audi A4 L4-2.0L (t) MACH Force-Xp 3in to 2-1/2in Stainless Steel Cat-Back Exhaust System

aFe blue axle-back exhaust

aFe

afe MACH Force-Xp 13-16 Audi Allroad L4 SS Axle-Back Exhaust w/ Blue Flame Tips

aFe cat-back exhaust

aFe

aFe MACHForce XP Exhaust Cat-Back SS-304 09-12 Audi A4 (B8) L4 2.0L (t)

aFe auto part

aFe

afe POWER MACH Force-Xp 09-16 Audi A4/A5 B8 L4-2.0L(t) 304 SS 3in. Front Resonator Delete Pipe

aFe downpipe

aFe

aFe 09-16 Audi A4/A5 (B8) L4-2.0L (t) Twisted Steel 3in. Downpipe - 304 Stainless w/ Cat

aFe carbon cat-back exhaust

aFe

aFe 17-19 Audi A4 (B9) MACH Force-Xp 3in to 2.5in 304 SS Cat-Back Exhaust System-Dual Carbon Tips

aFe carbon axle-back exhaust

aFe

aFe 17-19 Audi A4 (L4-2.0L) MACH Force-Xp Stainless Steel Axle-Back Exhaust System - Carbon Tip

aFe polished cat-back exhaust

aFe

aFe 17-19 Audi A4 (B9) MACH Force-Xp 3in to 2.5in 304 SS Cat-Back Exhaust System-Dual Polished Tips

aFe axle-back exhaust

aFe

aFe 20-21 Audi A4 L4-2.0L (t) MACH Force-Xp 3in to 2-1/2in 304 SS Axle-Back Exhaust System

aFe polished axle-back exhaust

aFe

aFe MACHForce XP 3in-2.5in SS Exhaust Axle-Back 17-19 Audi A4 (B9) L4-2.0L (t) - Polished

aFe cat-back exhaust

aFe

aFe 17-19 Audi A4 (B9) MACH Force-Xp 3in to 2.5in 304 SS Cat-Back Exhaust System-Dual SS Tips

Hardware, 1.8T Exh Mani

034Motorsport

Hardware, 1.8T Exh Mani

Clamp, Exhaust, OE Style, 65mm

034Motorsport

Clamp, Exhaust, OE Style, 65mm

B

BRE EXHAUST

FLANGE GASKET - 09-14 AUDI A4 QUATT

B

BRE EXHAUST

FLANGE GASKET - 09-14 AUDI A4 QUATT

FLANGE GASKET - 96-05 AUDI VW

BRE EXHAUST

FLANGE GASKET - 96-05 AUDI VW

NICKSON INDUSTRIES auto part

NICKSON INDUSTRIES

FIBER GASKET W/RING

D

Dana

EXHAUST PIPE GASKET

D

Dana

EXHAUST MANIFOLD GASKET SET

D

Dana

EXHAUST MANIFOLD GASKET SET

EXHAUST MANIFOLD GASKET SET

Dana

EXHAUST MANIFOLD GASKET SET

EXHAUST PIPE GASKET

Dana

EXHAUST PIPE GASKET

D

Dana

EXHAUST PIPE GASKET

D

Dana

EXHAUST PIPE GASKET

MOUNT RUBBER

AP Exhaust Products

MOUNT RUBBER

MOUNT RUBBER

AP Exhaust Products

MOUNT RUBBER

SLEEVE

AP Exhaust Products

SLEEVE

A

AP Exhaust Products

0913 FORESTER/9802 PASSPORT EXHAUST FLANGE GASKET

Flange Gasket - 76-09 Audi Pontiac VW Volvo

Magnaflow

Flange Gasket - 76-09 Audi Pontiac VW Volvo

AUDI VOLKSWAGEN 2771CC 2.8L AHA 1997-1999

Mahle

AUDI VOLKSWAGEN 2771CC 2.8L AHA 1997-1999

AUDI VW 3.0L 3.2L DOHC 24V 2005-2012

Mahle

AUDI VW 3.0L 3.2L DOHC 24V 2005-2012

C

Clevite

AUDI / VOLKSWAGEN MULTIPLE APPLICATIONS 19962013 EXHAUST PIPE GASKET

~(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

AUDI/VW 1.4L AND 2.0L 2015-2018 Exhaust Manifold Gasket

Mahle

AUDI/VW 1.4L AND 2.0L 2015-2018 Exhaust Manifold Gasket

Bolt - 97-10 Audi VW

Magnaflow

Bolt - 97-10 Audi VW

AUDI VOLKSWAGEN 2771CC 2.8L ATQ 2000-2005

Mahle

AUDI VOLKSWAGEN 2771CC 2.8L ATQ 2000-2005

V

Victor Reinz

Exhaust Manifold Gasket - 71-37422-00

Exhaust Manifold Gasket Set - 71-31958-00

Victor Reinz

Exhaust Manifold Gasket Set - 71-31958-00

AUDI VOLKSWAGEN MULTIPLE APPLICATIONS 1996-2013

Mahle

AUDI VOLKSWAGEN MULTIPLE APPLICATIONS 1996-2013

~(0.1 lbs. 9X7X0)~ 2000-2006 VW/AUDI 1.8L

Mahle

~(0.1 lbs. 9X7X0)~ 2000-2006 VW/AUDI 1.8L

AUDI / VOLKSWAGEN 1781CC 1.8L 2671CC 2.7L 19992006 TURBO OIL DRAIN

Clevite

AUDI / VOLKSWAGEN 1781CC 1.8L 2671CC 2.7L 19992006 TURBO OIL DRAIN

Exhaust Pipe Flange Gasket - 71-33841-00

Victor Reinz

Exhaust Pipe Flange Gasket - 71-33841-00

MANIFOLD,1.8T LONGLONGITUDINA

034Motorsport

MANIFOLD,1.8T LONGLONGITUDINA

DOWNPIPE,B8 A4 HFCHIGH FLOW C

034Motorsport

DOWNPIPE,B8 A4 HFCHIGH FLOW C

DOWNPIPE,B7 A4 HFCHIGH FLOW C

034Motorsport

DOWNPIPE,B7 A4 HFCHIGH FLOW C

DOWNPIPE,B5-B6 A4 HFCHIGH FLO

034Motorsport

DOWNPIPE,B5-B6 A4 HFCHIGH FLO

High Flow Cat, B9 Audi A4 2.0T

034Motorsport

High Flow Cat, B9 Audi A4 2.0T

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

Industrial Injection

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

MagnaFlow USE 106-0744106-0320

Magnaflow

MagnaFlow USE 106-0744106-0320

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

Magnaflow

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

FRONT PIPE KIT - 05-08 A4 QUATTRO 2

BRE EXHAUST

FRONT PIPE KIT - 05-08 A4 QUATTRO 2

DIRECTFIT EXHAUST SYSTEM 0405 AUDI A4 QUATRO 1.8L

BRExhaust

DIRECTFIT EXHAUST SYSTEM 0405 AUDI A4 QUATRO 1.8L

DIRECTFIT EXHAUST SYSTEM 0509 AUDI A4 2.0L

BRExhaust

DIRECTFIT EXHAUST SYSTEM 0509 AUDI A4 2.0L

DIRECT-FIT PIPE - 02-05 AUDI A4 QUA

BRE EXHAUST

DIRECT-FIT PIPE - 02-05 AUDI A4 QUA

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