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.

WeatherTech
WeatherTech 09+ Audi A5/S5/RS5 Front FloorLiner - Grey

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

Thule
Thule Rapid Traverse Foot Pack - For Vehicles w/Naked Roof (4 Pack) - Black

Clevite
Clevite Volkswagen 1.6L 1.8L 2.0L Thrust Washer Set

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

Bilstein
Bilstein B4 2002 Audi A4 Base Front Twintube Shock Absorber

Hella
Hella Bulb 7507 12V 21W BAU15s S8 AMBER

SPYDER
Spyder 13-16 Audi A4 4DR LED Tail Lights LED Clear Reverse Lights - Black ALT-YD-AA413-SEQ-BK

Hella
Hella Bulb H7 12V 55W PX26d T4.6 LONGLIFE

Bilstein
Bilstein B4 1996 Audi A4 Base Front Twintube Shock Absorber

WeatherTech
WeatherTech 09-12 Audi A4/S4/RS4 Lampguards

WeatherTech
WeatherTech 60in W x 23in H x 19in D Seat Protectors - Cocoa

Stoptech
Street Brake Pads w/Shims and Hardware

SPYDER
Spyder Audi A4 4Dr 06-08 LED Tail Lights Red Clear ALT-YD-AA406-G2-LED-RC

KYB
KYB Shocks & Struts Strut Mounts Front AUDI A4 1996-01 AUDI A6 1998-04 AUDI S4 2000-02 AUDI S6 2002-

WeatherTech
WeatherTech Gray Front Seat Protector

Hella
Hella H11 12V 55W PGJ19-2 HP2.0 Performance Halogen Bulb - Pair

Hotchkis
Hotchkis 96-02 Audi Quattro S4 Swaybar Rebuild Kit

WeatherTech
WeatherTech 2018+ Audi S4 Sedan Cargo Liner w/ Bumper Protector - Black

WeatherTech
WeatherTech 98-01 Audi A4 Avant 1.8t Cargo Liners - Tan

SPYDER
Spyder 02-05 Audi A4 (Excl Convertible/Wagon) Euro Style Tail Lights - Black (ALT-YD-AA402-BK)

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

Hella
HELLA H7 Halogen, 1 pc

Hella
Hella Bulb H9 12V 65W PGJ19-5 T4

Hella
Hella Bulb H11 12V 55W Pgj192 T4 +50

Hella
Hella Standard Wiper Blade 22in - Single

Bilstein
Bilstein B4 OE Replacement 02-06 Audi A4 Rear Standard Suspension Shock Absorber

Stoptech
StopTech 02-08 Audi A4 Quattro / 2/99-02 Audi S4 Street Touring Rear Brake Pads

Hella
Hella Bulb H7 12V 55W Px26D T4625 +50 (2)

Hella
Hella Bulb H9 12V 65W Pgj195 T4 (2)

WeatherTech
WeatherTech 02-08 Audi A4/S4/RS4 Rear FloorLiner - Black

Rhino-Rack USA
Rhino-Rack 06-13 Audi A3 5 Door Hatch Vortex SX 2 Bar Roof Rack - Black

Hella
Hella Optilux 12V/55W H7 Extreme Blue Bulb (Pair)

Hella
Hella H11 12V 55W Xenon White XB Bulb (Pair)

King Engine Bearings
King Engine Bearings Audi/VW 83-03 1.6L/1.8L/2.0L Performance Rod Bearing Set - Size +0.25mm

Clevite
Clevite VW 2771cc AHA V6 1998-02 Thrust Washer Set

Bilstein
Bilstein B4 02-06 Audi A4 OE Replacement Front Twintube Shock Absorber

EBC
EBC 10-13 Audi A3 2.0 TD Ultimax2 Rear Brake Pads

Hella
Hella Xenon D1S Bulb PK32d-2 85V 35W 4300k

WeatherTech
WeatherTech 2017+ Audi A4 Rear FloorLiner - Cocoa

Hella
Hella Bulb H8 12V 35W Pgj191 T4 Sb

Hella
Hella Clean Tech Wiper Blade 21in - Single

Hella
Hella Bulb H9 12V 65W XEN YLW

Hella
Hella Bulb H1 12V 55W Xen Wht Xb (2)

Hella
Hella Bulb H11 12V 55W Pgj192 T4

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

Hella
Hella Standard Wiper Blade 21in - Single

Hella
Hella Bulb 2827Na 12V 5W W21X95D Namber (2)

WeatherTech
Weathertech Universal 1st Row & 2nd Row Bucket Seat Protector - Black

WeatherTech
WeatherTech 2015+ Audi A4 Avant (Wagon) Cargo Liner - Black

WeatherTech
WeatherTech 2009-2015 Audi A4 Cargo Liners - Cocoa

Hella
Hella Clean Tech Wiper Blade 22in - Single

Hella
Hella Bulb H11 12V 55W Pgj192 T4 Sb

Hella
Hella Optilux H11 55W XY Extreme Yellow Bulbs (Pair)

Thule
Thule Evo Clamp Load Carrier Feet (Vehicles w/o Pre-Existing Roof Rack Attachment Points) - Black

SPYDER
Spyder 13-16 Audi A4/S4 Halogen Model Only Projector Headlights - Black PRO-YD-AA413HALSI-BK

WeatherTech
WeatherTech 2017+ Audi A4 All Road Wagon Cargo Liners w/ Bumper Protector - Tan

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

WeatherTech
WeatherTech 09-12 Audi A4/13-16 Allroad Cargo Liner w/ Bumper Protector - Black

SPYDER
Spyder Audi A4 4Dr 06-08 LED Tail Lights Black ALT-YD-AA406-G2-LED-BK
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