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 exterior components Parts
2182 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.

BMC
BMC 07-12 Audi A4 (8K/B8) 1.8 TFSI Replacement Panel Air Filter

SHW Performance
SHW 09-11 Audi A4 2.0L Front Smooth Monobloc Brake Rotor (8K0615301A)

Victor Reinz
MAHLE Original Audi A4 01-97 Valve Cover Set

Victor Reinz
MAHLE Original Audi A4 05-02 Valve Cover Set

Victor Reinz
MAHLE Original Audi A3 08-06 Timing Cover Set

Victor Reinz
MAHLE Original Audi A4 08-06 Valve Cover Set

SuperPro
SuperPro 2002 Audi A4 Base Front Lower Shock Absorber-to-Lower Control Arm Mount Bushing Kit

Torque Solution
Torque Solution Billet Shift Knob (Silver) Volkswagen/Audi Manual Transmission

Victor Reinz
MAHLE Original Audi 90 95-93 Cylinder Head Gasket

Torque Solution
Torque Solution Billet Shift Knob (Gold) Vokswagen/Audi Manual Transmission

Victor Reinz
MAHLE Original Audi A4 06-97 Valve Cover Set

3D MAXpider
3D MAXpider 2017-2019 Audi A4/S4/A5 Sportback/S5 Sportback Kagu 2nd Row Floormats - Tan

3D MAXpider
3D MAXpider 2017-2019 Audi A4/ S4 Kagu Cargo Liner - Tan

Victor Reinz
MAHLE Original Volvo 740 89 Eng Valve Steam Seat Set

3D MAXpider
3D MAXpider 2017-2019 Audi A4/S4/A5 Sportback/S5 Sportback Kagu 2nd Row Floormats - Gray

WeatherTech
WeatherTech 09-13 Audi A4/A5 Front Rubber Mats - Black

Hella
Hella Bulb H8 12V 35W PGJ19-1 T4

KYB
KYB Shocks & Struts Excel-G Rear AUDI A4 1999-01

Rhino-Rack USA
Rhino-Rack 01-05 Audi A4/S4/RS4 B6/7 4 Door Sedan Vortex ROC25 Flush 2 Bar Roof Rack - Black

Thule
Thule WingBar Evo 135 Load Bars for Evo Roof Rack System (2 Pack / 53in.) - Silver

King Engine Bearings
King Engine Bearings Audi/VW 83-03 1.6L/1.8L/2.0L Performance Rod Bearing Set - Size STDX

Clevite
Clevite VW 2792cc AHA V6 Con Rod Bearing Set

Hella
Hella Bulb 6411 12V 10W Sv858 T325 10X41(2)

WeatherTech
WeatherTech 2017+ Audi A4 (Sedan) Rear FloorLiner - Grey

EBC
EBC 09-11 Audi A4 2.0 Turbo Ultimax2 Rear Brake Pads

Thule
Thule WingBar Edge 95cm Roof Bar (1-Pack)

Bilstein
Bilstein B4 2005 Audi A4 Quattro Base Front Twintube Shock Absorber

Mishimoto
Mishimoto 99-05 VW GTI 1.8T 180 Degree Racing Thermostat

SPYDER
Spyder Audi A4 09-12 Projector Headlights Halogen Model Only - DRL LED Black PRO-YD-AA408-DRL-BK

Thule
Thule AirScreen XT Roof Rack Wind Fairing XL - 52in. (Black)

Hella
Hella Bulb H1 12V 55W P145S T25 +50 (2)

WeatherTech
WeatherTech 2019+ Audi A4/S4/A5/S5 Rear (2nd Row) FloorLiners - Cocoa (Sedan & Sportback)

Hella
Hella H9 12V 65W PGJ19-5 HP 2.0 Halogen Bulbs

WeatherTech
WeatherTech 2019+ Audi A4/S4/A5/S5 Rear (2nd Row) FloorLiners - Black (Sedan & Sportback)

KYB
KYB Shocks & Struts Strut Mount Rear Audi A4 (inc Quattro) 09-12/ Audi S4 (Exc Cabriolet) 10-12

Clevite
Clevite VW 1780cc Turbo AEB 1998-02 VW 1896cc Turbo Diesel 1993-02 Main Bearing Set

Stoptech
Street Brake Pads w/Shims and Hardware

WeatherTech
WeatherTech 09-13 Audi A4/A5 Front Rubber Mats - Tan

Stoptech
StopTech Performance 96-2/97 Audi A4 / 96-01 A4 Quattro / 95-98 A6 Rear Brake Pads

Bilstein
Bilstein B4 OE Replacement 02-06 Audi A4/A4 Quattro Rear Twintube Shock Absorber

Hella
Hella Bulb 2821 12V 3W W2.1x9.5d T3.25 E1 SB

WeatherTech
FloorMat

WeatherTech
WeatherTech 07-15 Audi Q7 / 07-14 Cadillac Escalade / 09-14 Ford F-150 Tan Rear Seat Protector

WeatherTech
WeatherTech 03-08 Audi A4/S4/RS4 TechShade

WeatherTech
WeatherTech 97-17 Ford F550 Tan Bucket Seat Protector

WeatherTech
WeatherTech 2017+ Audi A4 / Audi A4 Allroad Lampguards

Hella
Hella Bulb H21W 12V 21W Bay9S T275

Mishimoto
Mishimoto Volkswagen Golf/Jetta/Passat VR6 Racing Thermostat

WeatherTech
WeatherTech Universal Seat Protector - Cocoa

Hella
Hella High Wattage Bulb H7 12V 100W PX26d T4.6

WeatherTech
WeatherTech 09-13 Audi A4/S4/RS4 Cargo Liners - Black

WeatherTech
WeatherTech 2019+ Audi A4 Sedan Rear FloorLiner - Black

WeatherTech
WeatherTech 09-13 Audi A4/S4/RS4 Cargo Liners - Grey

King Engine Bearings
King Engine Bearings Volkswagen AMB/BYK/BBX Silicon Bi-Metal Aluminum Main Bearing Set - Size STD

WeatherTech
WeatherTech 2008-2015 Audi A5/S5/RS5 Front Rubber Mats - Cocoa

Bilstein
Bilstein 02-08 Audi A4 Quattro B3 OE Replacement (Air) Coil Spring - Rear

DBA
DBA 2016+ Audi A4 SP Performance Front Brake Pads

Hella
Hella Xenon D1S Bulb PK32d-2 85V 35W 5000k

WeatherTech
WeatherTech 59.75in W x 19in Depth x 25in H Seat Protector - Cocoa

Hella
Hella Bulb 7528 12V 21/5W Bay15D S8 Sb
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