QUATTRO MEETS PRACTICALITY

B5 through B9 — Audi's compact sedan with available Quattro AWD and turbo power.

Audi A4 HERITAGE

THE QUATTRO COMPACT

The Audi A4 has been the German compact sport sedan since 1994. The B5 (1.8T) launched the tuner-friendly chassis, the B6/B7 added the K04 turbo upgrade culture, and the B8/B9 brought EA888 turbocharged 2.0T engines that share parts with the VW Golf R / Jetta GLI.

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

3,135
Parts that fit
3,000+
MOTORMIA Builds
EBC
#1 brand by SKUs
$711
Average MSRP

READY TO BUILD YOUR AUDI A4?

Pick your year and trim to shop verified-fit Audi A4 parts.

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Verified Fitment

Audi A4 Parts

8164 parts available

Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.

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034Motorsport auto part

034Motorsport

HOSE,SIL,BRTHR AEB LWRSILICON

034Motorsport auto part

034Motorsport

HEAD GASKET,1.8T 83MM BOREBIG

034Motorsport auto part

034Motorsport

Rtr Upg, R, 370x22, B9 S4, Gry

034Motorsport auto part

034Motorsport

FLYWHEEL, B7 A4 2.0T RS4

034Motorsport auto part

034Motorsport

BUSHING,SUBFRAME,B6-B7 REAR A

034Motorsport auto part

034Motorsport

BUSHING,SUBFRAME,B4-B5 REARBI

034Motorsport auto part

034Motorsport

K04-15 KKK TURBO,OEM,UPGRADEK

0

034Motorsport

RS+ Big Brake Pkg, Black, B8

034Motorsport spacers

034Motorsport

SPACER,PHENOLIC,1.8T LARGE1.8

034Motorsport auto part

034Motorsport

RS+ Big Brake Pkg, Nkl, B9

034Motorsport auto part

034Motorsport

Mount Pr, Mtr, Density, B9 A4

0

034Motorsport

ROD BEARING SET,COATED,I4AUDI

0

034Motorsport

MAIN BEARING SET,AUDI V6COATE

034Motorsport auto part

034Motorsport

HOSE SET,A4 1.8T EARLY BREATH

034Motorsport auto part

034Motorsport

S34, Gloss, B8 2.0T

034Motorsport auto part

034Motorsport

Mount, Trans, B9 Insert, A4 DS

034Motorsport auto part

034Motorsport

MOUNT,TRANS,SD,B6 5 SPEEDSTRE

034Motorsport auto part

034Motorsport

Turbo Inlet Hose, B9 2.0T

034Motorsport auto part

034Motorsport

Ign Coil, 8pk, Yel, MQB Style

034Motorsport red auto part

034Motorsport

Ign Coil, 5pk, Red, Style

034Motorsport auto part

034Motorsport

Mount, Motor, SD, B8 A4

034Motorsport auto part

034Motorsport

FUEL RAIL,1.8T DROP IN KIT

034Motorsport roof rack

034Motorsport

MOUNT,MOTOR,TD,A4TRACK DENSIT

034Motorsport auto part

034Motorsport

FUEL RAIL,1.8T 034 KITFUEL RA

034Motorsport auto part

034Motorsport

MOUNT,MOTOR,SS,B5-6-7BILLET S

0

034Motorsport

ADAPTER,TB 1.8T TO 2.7TTHROTT

034Motorsport auto part

034Motorsport

Brace,Chassis,B8-B8.5

034Motorsport control arms

034Motorsport

Control Arm Kit, B8 Full Late

034Motorsport auto part

034Motorsport

MOUNT,MOTOR,SD,B8 S4

034Motorsport roof rack

034Motorsport

Bracket, Rr Brake Upgrade, B5

034Motorsport auto part

034Motorsport

Rotor Rings, F, 390x34, B9 BBK

034Motorsport auto part

034Motorsport

Mount, Rear Diff, Inserts B9

034Motorsport auto part

034Motorsport

Brake Pad, SS, Front, B8 S4

0

034Motorsport

RS+ BBK, Nickel, 1 of 2, B9

034Motorsport catch can

034Motorsport

CATCH CAN KIT,B7 2.0TCATCH CA

034Motorsport sway bar

034Motorsport

Sway Bar Kit, Rear, B8

034Motorsport auto part

034Motorsport

HARDWARE KIT, FP34 NIPPLE*OPT

034Motorsport fuel pump

034Motorsport

FUEL PUMP KIT,BILLET ONLY60 M

034Motorsport roof rack

034Motorsport

BRACKET,SUBFRAME,B5 SWAYBARB5

034Motorsport auto part

034Motorsport

Mount, Motorsport, B8 3.0T

034Motorsport auto part

034Motorsport

End Links, Rear, MS, B8/B8.5

034Motorsport auto part

034Motorsport

HOSE SET,A4 1.8T MID BREATHER

034Motorsport auto part

034Motorsport

MOUNT,TRANS,MS,B5 S4MOTORSPOR

034Motorsport auto part

034Motorsport

Handling Pac, Stg3, Late B8 A4

034Motorsport auto part

034Motorsport

Handling Pac, Stage 1, B9 A4/a

034Motorsport red auto part

034Motorsport

Ign Coil, 6pk, Red, Style

034Motorsport auto part

034Motorsport

Toe Links, Motorsport, B9

034Motorsport auto part

034Motorsport

DRIVESHAFT SUPPORT,B6 A4 C5 A6

0

034Motorsport

CROSSMEMBER,BILLET B5 DIFF SD

034Motorsport auto part

034Motorsport

Rebld Kit, D+ Frt End Link, B9

034Motorsport auto part

034Motorsport

BYPASS VALVE,710N710N BYPASS

034Motorsport auto part

034Motorsport

Toe Link, Density, B9 S4

034Motorsport auto part

034Motorsport

END LINK,B8 FRONT SWAYSPHERIC

034Motorsport auto part

034Motorsport

Ctrl Arm Kit, Full, TS, B9 S4

034Motorsport control arms

034Motorsport

Control Arm Kit, B8 Upper

034Motorsport sway bar

034Motorsport

Sway Bar Kit, B6-B7 25mm

034Motorsport auto part

034Motorsport

HARNESS,1.8T COIL REPAIR

034Motorsport auto part

034Motorsport

Ctrl Arms, D+, Frt, Up, B9 A4/

034Motorsport auto part

034Motorsport

Rebuild Kit, RS+ Calipers, B9

034Motorsport control arms

034Motorsport

Control Arms, Fr, Up Adj, Trac

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