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.

Mahle
Cylinder Head Gasket AUDI 2976CC 3.0L AVK BGN 2002-2006
Victor Reinz
Exhaust Pipe Flange Gasket - 71-15616-00

NGK
NTK EH0022 CAM/CRANK POSITION SENSOR

Victor Reinz
Engine Valve Cover Gasket - 15-31798-01

Denso
AIR FILTER

R1 Concepts
R1 98-08 Audi A4 (USA/Canada) Front Semi Met Pads & Hardware Kit

R1 Concepts
R1 96-99 Audi A4 Quattro Front Semi Met Pads & Hardware Kit

R1 Concepts
R1 96-99 Audi A4 (USA/Canada) Front Ceramic Pads & Hardware Kit

R1 Concepts
R1 20-25 Audi A4 (USA/Canada) Rear Euro Ceramic Pads & Hardware Kit

R1 Concepts
R1 08-17 Audi A5 Front Ceramic Brake Pads & Hardware Kit

R1 Concepts
R1 2020-2025 Audi A5 Rear R1 Euro Ceramic Pads & Hardware Kit

R1 Concepts
R1 00-21 Audi A4 Quattro Rear R1 Ceramic Brake Pads
R1 Concepts
R1 08-17 Audi Q5 (USA/Canada Excl Hybrid) Rear Optimum OE Pads & Hardware Kit

R1 Concepts
R1 16-25 Audi A4 (Mexico) Front Ceramic Pads & Hardware Kit
R1 Concepts
R1 2016-2021 Audi A4 (Mexico) Rear R1 Euro Ceramic Pads & Hardware Kit
R1 Concepts
R1 00-18 Audi A3 Quattro Rear Euro Ceramic Pads & Hardware Kit

R1 Concepts
R1 2008-2017 Audi A4 Quattro Rear R1 Euro Ceramic Pads & Hardware Kit

R1 Concepts
R1 96-99 Audi A4 Quattro Front Optimum OE Pads & Hardware Kit

R1 Concepts
R1 2018-2021 Audi A4 Quattro Rear R1 Optimum OE Pads & Hardware Kit

R1 Concepts
R1 20-25 Audi A5 Rear R1 Optimum OE Brake Pads

R1 Concepts
R1 99-08 Audi Allroad Rear Optimum OE Pads & Hardware Kit

R1 Concepts
R1 12-17 Audi A4 Quattro Rear Optimum OE Pads & Hardware Kit

R1 Concepts
R1 2005-2011 Audi A3 Rear R1 Optimum OE Pads & Hardware Kit

R1 Concepts
R1 1980-2001 Alfa Romeo 164 Rear R1 Optimum OE Pads & Hardware Kit

R1 Concepts
R1 08-17 Audi A4 (Mexico) Rear R1 Ceramic Brake Pads

R1 Concepts
R1 98-08 Audi A4 (USA/Canada) Front R1 Ceramic Brake Pads

R1 Concepts
R1 2020-2025 Audi A4 Quattro Rear R1 Optimum OE Pads & Hardware Kit

R1 Concepts
R1 2020-2025 Audi A6 Quattro Rear R1 Optimum OE Pads & Hardware Kit

R1 Concepts
R1 08-17 Audi A5 Front Ceramic Pads & Hardware Kit

R1 Concepts
R1 97-08 Audi A4 (Mexico) Rear Performance Sport Pads & Hardware Kit

R1 Concepts
R1 16-25 Audi A4 (Mexico) Front Semi Met Brake Pads and Hardware Kit

R1 Concepts
R1 99-08 Audi A6 Quattro Rear Performance Sport Pads & Hardware Kit
R1 Concepts
R1 98-08 Audi A4 (USA/Canada) Front Ceramic Brake Pads & Hardware Kit
Clutch Masters
Clutch Masters Audi/VW Flywheel Friction Lock
R1 Concepts
R1 16-20 Audi A5 Rear Optimum OE Pads & Hardware Kit

R1 Concepts
R1 86-24 Audi Allroad Rear R1 Optimum OE Brake Pads

R1 Concepts
R1 16-20 Audi A4 Allroad Rear R1 Optimum OE Brake Pads

R1 Concepts
R1 97-08 Audi A4 (Mexico) Front Semi Met Pads

R1 Concepts
R1 08-17 Audi A4 (USA/Canada) Rear Semi Met Pads & Hardware Kit

R1 Concepts
R1 16-21 Audi A5 Sportback Rear R1 Ceramic Brake Pads

Stainless Bros
Stainless Bros Bosch MAF Aluminum Flange

R1 Concepts
R1 00-18 Audi A4 Quattro Rear Semi Met Pads & Hardware Kit

R1 Concepts
R1 08-17 Audi A4 (Mexico) Rear Ceramic Brake Pads & Hardware Kit

Gates
Gates 98-05 Volkswagen Passat 4-Cyl. 1.8L Emission Hose Tee Emission Control Hose

NGK
NGK Laser Iridium Spark Plug Box of 4 (SILFER8C7ES)

APR Tuning
Intake Filter B8 2.0T (323x128) Fits Audi A4 09-16, A4 allroad 17, A4 Quattro 09-16, A5 Quattro 10-17, allroad 13-16, Q5 11-17 APR

APR Tuning
Intake Filter B6/B7 1.8T/2.0T/3.0L/3.2L/4.2L (263x211) Fits Audi A4 02-09, A4 Quattro 02-09, RS4 07-08, S4 04-09? APR

SPC Performance
SPC Performance Replacement Bushing Kit For Audi Control Arms(81353, 81363, 81373)

Clutch Masters
Clutch Masters 10-17 Audi S5 B8 3.0L Supercharged Clutch Lines

Melling
Intake Valve

Melling
Exhaust Valve

Melling
Rocker Arm

Melling
Rocker Arm

Melling
Hydraulic Lifter

Melling
Hydraulic Lifter

APR Tuning
CENTER CAP 1, METAL, FORGED, GLOSS B
Gates
Gates 20-23 Audi Q5 4-Cyl. 2.0L Electric Assist Serpentine V-Ribbed Belt (E-Start)

Supertech
Supertech Retainer Audi 2.0T FSI (for Spring SPR-A2416-BE2 Beehive)

Supertech
Supertech Steel Retainer Audi 2.0T FSI- for Spring SPR-A2416 7 Degree

King Engine Bearings
King Engine Bearings OE Replacement Bi-Metal Rod Bearings for Audi AUK. BKH, BYU
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