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.

Clevite
Clevite VW 1.8L / 2.0L 4 Cyl Performance Con Rod Bearing Set

Thule
Thule AeroBlade Edge L Load Bar for Raised Rails (Single Bar) - Black

Hella
Hella Bulb H11 12V 55W Pgj192 T4 (2)

Bilstein
Bilstein B4 1998 Audi A4 Avant Rear Shock Absorber

K&N Engineering
K&N 15-18 Audi A4 L4-1.4L 18-20 A5/RS5 2021 Q5 F/I Drop In Replacement Air Filter

Hella
Hella Bulb 7507 12V 21W Bau15S S8 Namber (2)

Rhino-Rack USA
Rhino-Rack 2500 Fitting Kit - 4 Pads/4 Clamps

Hella
Hella Xenon D2S Bulb P32-2d 85V 35W 4300k

Hella
Hella Bulb H1 12V 55W P145S T25 +50

SPYDER
Spyder Audi A4 06-08 Projector Headlights Halogen Only - Light Tube DRL Blk PRO-YD-AA405-LTDRL-G2-BK

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

SPYDER
Spyder Audi A4 06-08 Projector Headlights Halogen Model Only - DRL Black PRO-YD-AA405-DRL-BK

Hella
Hella Optilux H8 12V/55W XB Xenon White Bulb (pair)

Rhino-Rack USA
RHINO WIND FAIRING #2 38 INCH/965 MM

Hella
Hella Bulb H1 12V 55W P145S T25 Sb

WeatherTech
WeatherTech 2009-2016 Audi A4 Rear FloorLiner - Cocoa

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

Thule
Thule Rapid Podium Foot Pack - For Vehicles w/Fixed Points/Flush Railing/T-Track (4 Pack) - Black

Thule
Thule Edge Clamp Foot Pack

Thule
Thule Roof Rack Fit Kit 6019 (Flush Rail)

Hella
Hella Bulb 2723 12V 23W W2X46D T15

Hella
Hella Bulb 921 12V 16W W2.1X9.5d T5

Stoptech
Street Brake Pads w/Shims and Hardware

Hella
Hella Optilux H7 100W XB Extreme Blue Bulbs (Pair)

Hella
Hella Bulb 7528 12V 21/5W Bay15D S8 (2)

WeatherTech
WeatherTech 09-13 Audi A4/S4/RS4 Rear FloorLiner - Tan

Hella
Hella Bulb H8 12V 35W Pgj191 T4 (2)

Hella
Hella Bulb 1157 12V 27/8W BAY15d S8

Bilstein
Bilstein B3 02-06 Audi A4/A4 Quattro Replacement Rear Coil Spring

WeatherTech
WeatherTech 96-01 Audi A4 TechShade

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

Hella
Hella Bulb 7506 12V 21W BA15s S8

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

K&N Engineering
K&N 13-16 Audi SQ5 3.0L V6 Cabin Air Filter

Rhino-Rack USA
Rhino-Rack Heavy Duty Bar - 44in - Single - Black

Hella
Hella Optilux XB Extreme Type H11 12V 80W Blue Bulbs - Pair

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

Stoptech
StopTech Performance Brake Pads

Bilstein
Bilstein B4 1996 Audi A4 Base Front Twintube Shock Absorber

Hella
Hella H11 12V 55W PGJ19-2 T4 +50 Performance Halogen Bulb - Pair

Stoptech
StopTech Street Select 08-17 Audi A5 Front Brake Pads

SPYDER
Spyder 13-16 Audi A4/S4 Halogen Model Only High-Power LED Headlights - Black PRO-YD-AA413HALAP-BK

Hella
Hella Bulb H6W 12V 6W BAX9s T2.75

Hella
Hella Bulb H7 12V 70W PX26d T4.625

Clevite
Clevite VW 1.8L / 2.0L 4 Cyl Performance Con Rod Bearing Set

Hella
Hella Bulb H7 12V 55W Px26D T4625 (2)

Thule
Thule Passage 2 - Hanging Strap-Style Trunk Bike Rack (Up to 2 Bikes) - Black

MGP
Set Of 4 Caliper Covers Engraved Front And Rear MGP Red Finish Silver Characters 2009-2017 Audi A6 MGP Caliper Covers

Bilstein
Bilstein B3 OE Replacement 96-01 Audi A4/A4 Quattro Front Coil Spring

Stoptech
StopTech Street Select Brake Pads - Rear

SPYDER
Spyder Audi A4 09-12 Projector Headlights Xenon/HID Model Only - DRL LED Blk PRO-YD-AA408-HID-DRL-BK

WeatherTech
WeatherTech 09-13 Audi A4/S4/RS4 Rear FloorLiner - Grey

Thule
Thule AirScreen XT Roof Rack Wind Fairing S - 32in. (Black)

SPYDER
Spyder 13-16 Audi A4/S4 HID Model Only Projector Headlights - Black PRO-YD-AA413HIDSI-BK

Thule
Thule AeroBlade Edge L Load Bar for Raised Rails (Single Bar) - Silver

Hella
Hella Bulb 921 12V 16W W21X95D T5 (2)

WeatherTech
WeatherTech 2017+ Audi A4 Sedan Rear FloorLiner - Black

Hella
Hella Bulb 7506 12V 21W Ba15S S8 (2)
SPYDER
Spyder Audi A4 02-05 LED Tail Lights Red Clear ALT-YD-AA402-LED-RC

WeatherTech
WeatherTech 09-15 Audi A4 / S4 / RS4 TechShade
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