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 Category gaskets and seals Parts
287 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.

Victor Reinz
Engine Cylinder Head Gasket Set - 02-31955-03

Victor Reinz
Engine Conversion Gasket Set - 08-42756-01

Mahle
Head Set AUDI 3123CC 3.2L CALA CALB 2008-2012

Clevite
AUDI 1.8L 1781CC (AMB) 20042006 A4 HEAD SET
Clevite
VWPASS 1.8L 20VALVE DOHC TURBO 19972000 AEB ONLY HEAD SET

Mahle
AUDI 2771CC 2.8L SOHC 12V 1996-1998

Mahle
Head Set AUDI VOLKSWAGEN 2771CC2.8L ATQ DOHC 30V 2000-2005

Mahle
Head Set VW Audi 1964cc 2.0L Turbo BPY BWT CRZA
Clevite
VW 1964CC 2.0L TURBO BPY 20062007 CONVERSION SET

Victor Reinz
Engine Cylinder Head Gasket Set - 02-37015-02

Mahle
Head Set AUDI VOLKSWAGEN 2771CC2.8L AHA DOHC 30V 1997-1999

Victor Reinz
Engine Cylinder Head Gasket Set - 02-36000-01

Mahle
Conversion Set AUDI 3.2L 3123CC CALA CALB 2008-2012

Mahle
Conversion Set AUDI 3.2L 3123CC BKH 2005-2009
Mahle
~(2.4 lbs. 24X10X2)~ Head Set AUDI 3123CC 3.2L DOHC 24V BKH 2005-2009
Mahle
Head Set AUDI 1.8L 1781CC (AMB) 2004-2006 A4

Mahle
Head Set VW-PASS 1.8L 20VALVE DOHC TURBO 1997-2000 AEB only

Fel-Pro
Fel-Pro Volkswagen Tiguan 76367 Engine Oil Filter Adapter Gasket

Fel-Pro
Fel-Pro Audi A6 Quattro TCS 73712 Engine Timing Chain Tensioner Gasket

Fel-Pro
Fel-Pro Volkswagen Jetta 71866 Engine Oil Drain Plug Gasket

Fel-Pro
Fel-Pro Audi A4 Quattro ES 73584 Fuel Injector O-Ring Kit

Fel-Pro
Fel-Pro Audi Q5 MS 97576 Engine Intake Manifold Gasket

Fel-Pro
Fel-Pro Audi Q3 TCS 46292 Engine Timing Cover Seal

Fel-Pro
Fel-Pro Audi Q5 36193 Engine Coolant Outlet Gasket

Fel-Pro
Fel-Pro Audi A4 TCS 46318 Engine Timing Cover Gasket

Fel-Pro
Fel-Pro Audi A6 Quattro TCS 73710 Engine Timing Chain Tensioner Gasket

Fel-Pro
Fel-Pro Volkswagen Passat 35831 Engine Coolant Pipe O-Ring

Fel-Pro
Fel-Pro Volkswagen Passat OS 30791 R Engine Oil Pan Gasket Set PermaDry Molded Rubber

Fel-Pro
Fel-Pro Volkswagen Passat OS 30779 Engine Oil Pan Gasket Set High-Temperature Rubber-Coated Fiber

Fel-Pro
Fel-Pro Audi A4 Quattro ES 72834 Engine Cylinder Head Bolt Set

Fel-Pro
Fel-Pro Audi Q7 ES 72806 Engine Camshaft Plug

Fel-Pro
Fel-Pro Audi A4 Quattro 35750 Engine Coolant Thermostat Housing Gasket

Fel-Pro
Fel-Pro Audi Q7 Engine Valve Cover Gasket Set

Fel-Pro
Fel-Pro Audi Q5 MS 97518 Engine Intake Manifold Gasket Set

Fel-Pro
Fel-Pro Volkswagen Jetta 35716 Multi-Purpose O-Ring

Fel-Pro
Fel-Pro Volkswagen Jetta 35705 Engine Coolant Thermostat Housing Seal

Fel-Pro
Fel-Pro Volkswagen Jetta 35675 Multi-Purpose O-Ring

Fel-Pro
Fel-Pro Volkswagen Tiguan Engine Valve Cover Gasket Set

Fel-Pro
Fel-Pro Volkswagen Passat 35549 Engine Water Pump Gasket

Fel-Pro
Fel-Pro Volkswagen Passat VS 50702 R Engine Valve Cover Gasket Set

Fel-Pro
Fel-Pro Nissan Rogue 35026 Engine Coolant Thermostat Housing Gasket

Fel-Pro
Fel-Pro Volkswagen Tiguan CS 26455 Engine Conversion Gasket Set

Fel-Pro
Fel-Pro Audi A4 Quattro 26608 PT PermaTorque Engine Cylinder Head Gasket
Fel-Pro
Fel-Pro Volkswagen Passat CS 26328 Engine Conversion Gasket Set

Fel-Pro
Fel-Pro Audi A4 Quattro CS 26318 Engine Conversion Gasket Set

Fel-Pro
Fel-Pro Volkswagen Jetta 25598 Multi-Purpose O-Ring

Fel-Pro
Fel-Pro Volkswagen Tiguan Engine Intake Manifold Gasket Set

Fel-Pro
Fel-Pro Volkswagen Passat CS 26182-2 Engine Conversion Gasket Set

Fel-Pro
Fel-Pro Volkswagen Tiguan 26455 PT PermaTorque Engine Cylinder Head Gasket

Fel-Pro
Fel-Pro Audi TT Quattro CS 26182 Engine Conversion Gasket Set

Fel-Pro
Fel-Pro Volkswagen Tiguan BS 40725 Engine Crankshaft Seal Kit

Fel-Pro
Fel-Pro Volkswagen Passat BS 40704 Engine Crankshaft Seal Kit

Fel-Pro
Fel-Pro Volkswagen Passat TOS 18734 Automatic Transmission Case Gasket

Fel-Pro
Fel-Pro Volkswagen Passat TOS 18724 Transmission Oil Pan Gasket 27 Bolt Hole One Piece Gasket

Fel-Pro
Fel-Pro Volkswagen Tiguan HS 26455 PT PermaTorque Engine Cylinder Head Gasket Set

Fel-Pro
Fel-Pro Volkswagen Passat MS 96151 Engine Intake Manifold Gasket Set

Fel-Pro
Fel-Pro Volkswagen Tiguan TCS 46138 Engine Crankshaft Seal Kit
Fel-Pro
Fel-Pro Volkswagen Passat HS 26328 PT PermaTorque Engine Cylinder Head Gasket Set

Fel-Pro
Fel-Pro Audi A4 Quattro HS 26318 PT PermaTorque Engine Cylinder Head Gasket Set

Fel-Pro
Fel-Pro Volkswagen Passat TCS 46021 Engine Crankshaft Seal Kit
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