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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S

STANDARD IGN

ABS SENSOR HARNESS

Extreme Dimensions auto part

Extreme Dimensions

2008-2015 Lexus LX570 Urethane AF-1 Wide Body Door Caps ( PUR-RIM ) - 4 Piece (S)

E

Extreme Dimensions

2006-2008 Audi A4 B7 Carbon Creations DTM Look Front Under Spoiler Air Dam Lip Splitter - 1 Piece

WAGNER BRAKE auto part

WAGNER BRAKE

SEMI-MET BRAKE PADS

Suspension Techniques springs

Suspension Techniques

ST Audi A4 / S4 (B9) Sedan A5 S5 (B9) Coupe 4WD Adjustable Lowering Springs

Suspension Techniques springs

Suspension Techniques

ST Audi A4 (B9) Sedan 2WD Adjustable Lowering Springs

Suspension Techniques springs

Suspension Techniques

ST Audi A4 / S4 Wagon A5 S5 RS5 Cabrio. (B8) 2WD 4WD Adjustable Lowering Springs

STANDARD IGN auto part

STANDARD IGN

DIVERTER VALVE

S

STANDARD IGN

DIVERTER VALVE

W

WOLF PROD.

LE AUDI A4

WAGNER BRAKE auto part

WAGNER BRAKE

SEMI-MET DISC PAD SET

E

Extreme Dimensions

2006-2008 Audi A4 B7 4DR Duraflex DTM Look Rear Bumper Cover - 1 Piece

MOTORAD auto part

MOTORAD

ENGINE CRANKSHAFT POSITION SENSOR

E

Extreme Dimensions

2006-2008 Audi A4 S4 B7 Carbon Creations OEM Look Hood - 1 Piece

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

TRAKMOTIVE auto part

TRAKMOTIVE

ALL NEW CV AXLE

Suspension Techniques coilovers

Suspension Techniques

ST XA Adjustable Coilovers 2018+ Audi A4/S4/A5 (B9) Sedan Quattro w/o Electronic Dampers

Suspension Techniques coilovers

Suspension Techniques

ST 2017+ Audi A5 (B9) Sportback Quattro XA Height & Rebound Adjustable Coilover Kit 0.4in-1.4in

M

MOTORAD

KNOCK SENSOR

M

MOTORAD

VAPOR CANISTER

Suspension Techniques coilovers

Suspension Techniques

ST XA-Height/Rebound Adjustable Coilovers 96-01 Audi A4 (8D/B5) Quattro Sedan/Wagon 1.8T

Suspension Techniques coilovers

Suspension Techniques

ST XA-Height Adjustable Coilovers Audi A4 (8E/B6-B7)

MANIFOLD ABSOLUTE PRESSURE SENSOR

Walker Products Inc. - Sensors

MANIFOLD ABSOLUTE PRESSURE SENSOR

DAYCO HYDRAULIC auto part

DAYCO HYDRAULIC

WATER PUMP

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

Suspension Techniques springs

Suspension Techniques

ST 12-18 Audi A6/A7 (C7/4G)/09-16 A4/S4 (B8) 2WD/4WD Adjustable Lowering Springs

Goodyear auto part

Goodyear

SERPENTINE BELT TENSIONER FEADTENSIONER

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

Suspension Techniques coilovers

Suspension Techniques

ST Coilover Kit 96-01 Audi A4 Quattro (8D/B5) Sedan/Wagon / 00-01 Audi S4 (8D/B5) Sedan

Suspension Techniques coilovers

Suspension Techniques

ST Coilover Kit 02-08 Audi A4 Quattro (8E/B6-B7) Sedan

OXYGEN SENSOR

Walker Products Inc. - Sensors

OXYGEN SENSOR

D

DAYCO HYDRAULIC

RADIATOR HOSE

E

Extreme Dimensions

2006-2008 Audi A4 S4 B7 Duraflex RS4 Wide Body Front Bumper Cover - 1 Piece

W

Walker Products Inc. - Sensors

ENGINE CRANKSHAFT POSITION SENSOR

T

TRAKMOTIVE

DRIVE SHAFT

MASS AIR FLOW SENSOR

Walker Products Inc. - Sensors

MASS AIR FLOW SENSOR

T

TRAKMOTIVE

ALL NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TIMKEN auto part

TIMKEN

PRESET PREGREASED PRESEALED BRG M

TRAKMOTIVE auto part

TRAKMOTIVE

CV AXLE SHAFT

Suspension Techniques coilovers

Suspension Techniques

ST XA-Height Adjustable Coilovers 17+ Audi A4 (B9) Sedan 2WD - W/O Elec. Dampers - 50mm

Suspension Techniques coilovers

Suspension Techniques

ST XA-Height/Rebound Adjustable Coilovers 02-08 Audi A4 (8E/B6-B7) Wagon Quattro

Suspension Techniques coilovers

Suspension Techniques

ST XTA Adjustable Coilovers Audi A4 (B8) Wagon 4WD

Suspension Techniques coilovers

Suspension Techniques

ST Coilover Kit 02-08 Audi A4 (8E/B6-B7) Sedan 2WD

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

WAGNER BRAKE auto part

WAGNER BRAKE

SEMI-MET BRAKE PADS

WAGNER BRAKE auto part

WAGNER BRAKE

CERAMIC BRAKE PADS

E

Extreme Dimensions

2020-2023 Audi A4 S4 Duraflex Elver Front Lip Spoiler Air Dam - 1 Piece

WAGNER BRAKE auto part

WAGNER BRAKE

H.I.D REPLACEMENT BULB

Extreme Dimensions bumper

Extreme Dimensions

2006-2008 Audi A4 B7 4DR Duraflex DTM Look Body Kit - 4 Piece - Includes DTM Look Front Bumper Cover (105035) DTM Look Rear Bumper Cover (105037) R-1 Side Skirts Rocker Panels (100290)

STANDARD IGN auto part

STANDARD IGN

INTRMTR RELAY

TRAKMOTIVE auto part

TRAKMOTIVE

ALL NEW CV AXLE

R

REMY

REMANUFACTURED ALTERNATOR

R

REMY

REMANUFACTURED ALTERNATOR

TRAKMOTIVE auto part

TRAKMOTIVE

ALL NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

TRAKMOTIVE auto part

TRAKMOTIVE

NEW CV AXLE

WAGNER BRAKE auto part

WAGNER BRAKE

CERAMIC DISC PAD SET

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