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 Category:exterior components Parts

2182 parts available

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

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H

Hella

SENSOR WHEEL SPEED

SENSOR CAMSHAFT POSITION

Hella

SENSOR CAMSHAFT POSITION

SPARK PLUG

Bosch

SPARK PLUG

GASOLINE INJECTOR

Bosch

GASOLINE INJECTOR

Valve Cover Gasket VW 1984cc 2.0L Turbo L4 BPY 2006-2007

Mahle

Valve Cover Gasket VW 1984cc 2.0L Turbo L4 BPY 2006-2007

CONTROL ARM

Dorman

CONTROL ARM

DISC BRAKE PADS

Bosch

DISC BRAKE PADS

CONTROL ARM

Dorman

CONTROL ARM

S

Stoptech

BRAKE HOSE

Connector - 87-10 Audi VW 57mm x 125mm

Magnaflow

Connector - 87-10 Audi VW 57mm x 125mm

G

Gates

Gates Power Steering Repair Kit

B

Bosch

BE1953H BRAKE PADS

NTK EH0335 CAM/CRANK POSITION SENSOR

NGK

NTK EH0335 CAM/CRANK POSITION SENSOR

SENSOR CAMSHAFT POSITION

Hella

SENSOR CAMSHAFT POSITION

B

Bosch

DISC BRAKE PADS

SENSOR WHEEL SPEED

Hella

SENSOR WHEEL SPEED

BEHR ThermostatInsert 2009-2013 VW Audi 2.0L with BEHR waterpump

Mahle

BEHR ThermostatInsert 2009-2013 VW Audi 2.0L with BEHR waterpump

Audi A4 2.0L TDI 3.2L A6 3.2L 4.2L A8 R8 RS4 S4 4.2L S6 and S8 5.2L

Mahle

Audi A4 2.0L TDI 3.2L A6 3.2L 4.2L A8 R8 RS4 S4 4.2L S6 and S8 5.2L

C

Clevite

ENGINE COOLANT THERMOSTAT

Flange Gasket - 09-14 Audi A4 Quattro

Magnaflow

Flange Gasket - 09-14 Audi A4 Quattro

ARMATURE

Bosch

ARMATURE

BRAKE PADS

Bosch

BRAKE PADS

BEHR ThermostatIntegral AUDI VW 1.8L 2.0L BGB BPJ BUL BWE BYK AMB BPG BWT

Mahle

BEHR ThermostatIntegral AUDI VW 1.8L 2.0L BGB BPJ BUL BWE BYK AMB BPG BWT

B

Bosch

DISC BRAKE ROTOR

SENSOR PARKING ASSIST

Hella

SENSOR PARKING ASSIST

Audi A4 1.8L Turbo AMB 2002-2006

Mahle

Audi A4 1.8L Turbo AMB 2002-2006

CABIN AIR FILTER

Clevite

CABIN AIR FILTER

BOSCH WHEEL SPEED SENSOR

Bosch

BOSCH WHEEL SPEED SENSOR

NTK EC0240 CAM/CRANK POSITION SENSOR

NGK

NTK EC0240 CAM/CRANK POSITION SENSOR

BRAKE PAD SET, DISC BRAKE

Hella

BRAKE PAD SET, DISC BRAKE

Gates 19/32in x 19/32in x 12 1/8in

Gates

Gates 19/32in x 19/32in x 12 1/8in

TURBOCHARGER MOUNTING GASKET SET

Clevite

TURBOCHARGER MOUNTING GASKET SET

CRANKSHAFT SENSOR

Bosch

CRANKSHAFT SENSOR

B

Bosch

MAP SENSOR

COOLING FAN

Bosch

COOLING FAN

CONTROL ARM

Dorman

CONTROL ARM

B

Bosch

COMMUTATOR END SHIEL

CONTROL ARM

Dorman

CONTROL ARM

D

Dorman

Steering Parts OEM: Control Arms

S

Stoptech

SEMI-LOADED CALIPER

SENSOR PARKING ASSIST

Hella

SENSOR PARKING ASSIST

Engine Cylinder Head Gasket - 61-36390-00

Victor Reinz

Engine Cylinder Head Gasket - 61-36390-00

Engine Cylinder Head Gasket - 61-37435-10

Victor Reinz

Engine Cylinder Head Gasket - 61-37435-10

DISC BRAKE PADS

Bosch

DISC BRAKE PADS

SENSOR CRANKSHAFT VAG

Hella

SENSOR CRANKSHAFT VAG

TURBOCHARGER BOOST SENSOR

NGK

TURBOCHARGER BOOST SENSOR

VEHICLE SPEED SENSOR

NGK

VEHICLE SPEED SENSOR

BRAKE PAD SET, DISC BRAKE

Hella

BRAKE PAD SET, DISC BRAKE

Gates 5/8in x 5/8in x 4 7/32in

Gates

Gates 5/8in x 5/8in x 4 7/32in

THERMAL PRODUCTS

Clevite

THERMAL PRODUCTS

Engine Coolant Reservoir

Mahle

Engine Coolant Reservoir

THERMAL PRODUCTS

Clevite

THERMAL PRODUCTS

IGNITION COIL 4 PIN FOR AUDI/VW/SK

Hella

IGNITION COIL 4 PIN FOR AUDI/VW/SK

STEERING TIE ROD END

Dorman

STEERING TIE ROD END

Gates 5/8in x 5/8in x 10 1/32in

Gates

Gates 5/8in x 5/8in x 10 1/32in

DISC BRAKE PAD

Hella

DISC BRAKE PAD

C

Clevite

SLEEVE ASSEMBLY RING SET

CRANKSHAFT SENSOR

Bosch

CRANKSHAFT SENSOR

C-TEK Ceramic Brake Pads

Stoptech

C-TEK Ceramic Brake Pads

CRANKSHAFT SENSOR

Bosch

CRANKSHAFT SENSOR

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