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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A1 REMFG INC

FRICTION CHOICE CALIPERS

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TYC

0914 AD A.4 2.0L RAD & COND CFA

Corbeau black auto part

Corbeau

Corbeau Sportline RRS Black Vinyl Diamond/Black Stitch w/ Seat heater Installed in Both

CAPA 0508 AD A4 SDN QTR TAIL LIGHT ASSY LH

TYC

CAPA 0508 AD A4 SDN QTR TAIL LIGHT ASSY LH

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A1 REMFG INC

NEW WINDOW LIFT REGULATOR

TYC headlights

TYC

1316 AD A4/1317 A5 W/O CURVE LTG HID HEADLIGHT ASSY

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TYC

LH TAILLAMP ASSY SEDAN AUDI A4/S4 0508; RS4 0508

CAPA 0508 AD A4 SDN QTR TAIL LIGHT ASSY RH

TYC

CAPA 0508 AD A4 SDN QTR TAIL LIGHT ASSY RH

SPEC D TUNING black headlights

SPEC D TUNING

PROJECTOR HEADLIGHT BLACK R8 STYLE

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A1 REMFG INC

CV DRIVE AXLE

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Sherman Parts

CAPA HOOD PANEL ASSY AUDI A4/S4 0918 SEDAN/WAGON

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Trans-Dapt

OLDS AND PONTIAC ENGINE KIT; OFFSET PCV; OLDS 330455 AND PONTIAC 403CHROME195964 PONTIAC ENGINES

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A1 REMFG INC

RIGHT HALF SHAFT

458 SERIES PROPHECY FWD 20X8.5 BK

Ultra Wheel

458 SERIES PROPHECY FWD 20X8.5 BK

458 SERIES PROPHECY FWD 20X8.5 GN

Ultra Wheel

458 SERIES PROPHECY FWD 20X8.5 GN

TYC auto part

TYC

0208 AD A.4 1.8/2.0L RAD & COND CFA (w/o FCM)

CV DRIVE AXLE

A1 REMFG INC

CV DRIVE AXLE

VW PASSAT 99-98 F/R

A1 REMFG INC

VW PASSAT 99-98 F/R

FRICTION CHOICE CALIPERS

A1 REMFG INC

FRICTION CHOICE CALIPERS

0508 AD A4/S4 2.0/3.2L A/C CONDENSER (PFC)

TYC

0508 AD A4/S4 2.0/3.2L A/C CONDENSER (PFC)

461 SERIES EXODUS FWD 20X8.5 BK

Ultra Wheel

461 SERIES EXODUS FWD 20X8.5 BK

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Samco

Samco Audi A4 1800 Turbo FWD (2001) Man Trans AWM B5 US Spec (4) Turbo Kit (BLACK)

RH TAILLAMP ASSY SEDAN AUDI A4/S4 0508; RS4 0508

TYC

RH TAILLAMP ASSY SEDAN AUDI A4/S4 0508; RS4 0508

IMP UNLOADED CALIPERS

A1 REMFG INC

IMP UNLOADED CALIPERS

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Samco

Samco Audi A4 1800 Turbo FWD (2001) Man Trans AWM B5 US Spec (4) Turbo Kit (WHITE)

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Samco

Samco Audi A4 1800 Turbo FWD (2001) Man Trans AWM B5 US Spec (4) Turbo Kit (SOLARORANGECAMO)

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Samco

Samco Audi A4 1800 Turbo FWD (2001) Man Trans AWM B5 US Spec (4) Turbo Kit (URBANCAMO)

Samco auto part

Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (WHITE)

21C AD A.4 SDN DENSO (FROM 32221) 5.5MM W/ RADIATOR/CONDENSOR (PFC)

TYC

21C AD A.4 SDN DENSO (FROM 32221) 5.5MM W/ RADIATOR/CONDENSOR (PFC)

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Samco

Samco Audi A4 Turbo B6 AVJ/AMB/BFB (3) Turbo Kit (BLAZE)

SPEC D TUNING chrome headlights

SPEC D TUNING

PROJECTOR HEADLIGHT CHROME R8 STYLE

Samco auto part

Samco

Samco Audi A4 1800 Turbo B5 AEB/ATW/AWM/AVJ (1) Induction Hose (BLAZE)

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A1 REMFG INC

UNLOAD BRAKE CALIPER IMP

Konig Wheels black auto part

Konig Wheels

Konig Dial In 15x9 4x100 ET35 Gloss Black

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Sherman Parts

LOWER ENGINE COVER 2.0L; REAR PAN AUDI A4 0916 CAPA

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SPEC D TUNING

PROJECTOR HEADLIGHT CHROME R8 STYLE

Primax Wheels auto part

Primax Wheels

20X9 5-120 +35 B

0912 AD A.4/S.4 SDN/0911 A.6/S.6 F.L LH

TYC

0912 AD A.4/S.4 SDN/0911 A.6/S.6 F.L LH

1718 AD A.4 PWR HT W/ SIG W/ SIDE A. PTM MIR RH

TYC

1718 AD A.4 PWR HT W/ SIG W/ SIDE A. PTM MIR RH

0208 AD A.4 PWR HT PTM w/o MEM MIR LH

TYC

0208 AD A.4 PWR HT PTM w/o MEM MIR LH

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TYC

0616 VW JETTA/0622 PASSAT 2.0L COMPRESSOR

A/C EVAPORATOR CORE AUDI A4/S4 SEDAN/WAGON 0912

TYC

A/C EVAPORATOR CORE AUDI A4/S4 SEDAN/WAGON 0912

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Samco

Samco Audi A4 1800 Turbo B5 AEB/ATW/AWM/AVJ (1) Induction Hose (SOLARORANGECAMO)

Garrett Turbos auto part

Garrett Turbos

TURBOCHARGER ORIGINAL REMAN WITH KIT GT2052V VW GROUP

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Samco

Samco Audi A4 1800 Turbo FWD (2001) Man Trans AWM B5 US Spec (4) Turbo Kit (RED)

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Samco

Samco Audi A4 1800 Turbo FWD (2001) Man Trans AWM B5 US Spec (4) Turbo Kit (GREEN)

TYC auto part

TYC

0509 AD A.4 2.0L L4 AT 1R PA RAD

OMP 06-08 Audi A4/S4 - Driver Bracket

OMP Racing

OMP 06-08 Audi A4/S4 - Driver Bracket

Samco auto part

Samco

Samco Audi A4 1800 Turbo B5 AEB/ATW/AWM/AVJ (1) Induction Hose (URBANCAMO)

A

A1 REMFG INC

AUDI A4,A6,S6 06-03 F/L

Samco gunmetal auto part

Samco

Samco Audi A4 1800 Turbo B5 AEB/ATW/AWM/AVJ (1) Induction Hose (GUNMETALGREY)

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Sherman Parts

CAPA LOWER ENGINE COVER W/O SLINE PKG; FRT AUDI A4 2020

Primax Wheels auto part

Primax Wheels

521 20X8.5 5X114.3

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A1 REMFG INC

CV DRIVE AXLE

Sherman Parts auto part

Sherman Parts

HOOD PANEL ASSY AUDI A4 20172020; AUDI A4 QUATTRO 20172021

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TYC

0205 AD A.4/S.4 GEN2;SDN T.L LH

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TYC

9904 VW PASAT 2.8L (Opt;120A)(6S) ALT

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Sherman Parts

FRONT BUMPER COVER; W/O SLINE PKG; W/O HEADLAMP WASHER; W/O WARNING SYSTEM; PRIME; A4 1316

TYC auto part

TYC

ALTERNATOR AUDI A4 2.0L 0509

NEW CV DRIVE AXLES

A1 REMFG INC

NEW CV DRIVE AXLES

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