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:engines and components Parts

763 parts available

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

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Gates Super HC Narrow Section Molded Notch V-Belt

Gates

Gates Super HC Narrow Section Molded Notch V-Belt

M

Mahle

Engine Piston Ring Set 42081CP.040

Hella auto part

Hella

OIL PUMP

C

Carrillo

VW_BTSI_3HS_5670B6S

JE Pistons auto part

JE Pistons

VLKSWGN 1.8T 5V DISHED -7CC 81MM

Gates Steel Smooth/Backside (59 mm x 12 mm x 31 mm) - Flanged

Gates

Gates Steel Smooth/Backside (59 mm x 12 mm x 31 mm) - Flanged

JE Pistons auto part

JE Pistons

VW TS1 2.0T TSI 22MM PIN 83.5MM 10

JE Pistons auto part

JE Pistons

VW 2.0T FSI 20MM PIN 83.5MM 10.0 FS

JE Pistons auto part

JE Pistons

VW 1.8T 20V 20MM PIN 82MM 9.25 FSR

C

Clevite

VW 2.7L AND 2.8L ATQ AHA APB & BEL 19982004 (M11 X 1.5MM X 133MM) CYLINDER HEA

J

JE Pistons

VOLKSWAGON 2L ABF 8CC DOME 1.204X3.

Gates Steel Smooth/Backside (59 mm x 10 mm x 34 mm)

Gates

Gates Steel Smooth/Backside (59 mm x 10 mm x 34 mm)

Gates hardware kit

Gates

Gates Steel Smooth/Backside (72 mm x 8 mm x 32 mm) - W/Bolt Bushing 2 Washers

JE Pistons hardware kit

JE Pistons

MITSUBISHI 4G63 7-BOLT 1.9CC DOME 1

VACUUM PUMP BRAKING SYSTEM 8TM

Hella

VACUUM PUMP BRAKING SYSTEM 8TM

J

JE Pistons

SUBARU FA20 DIRECT INJECTION 2.0L -

Mahle auto part

Mahle

Radiator

FOR AUDI ACZ AAH ACK. AEJ ASN

King Engine Bearings

FOR AUDI ACZ AAH ACK. AEJ ASN

JE Pistons auto part

JE Pistons

VW 2.0T FSI 83.0 KIT

Gates auto part

Gates

Gates Electric Engine Water Pump

Mahle auto part

Mahle

2008-2014 VW Audi 2.0L gas

CAMSHAFT SENSOR

Bosch

CAMSHAFT SENSOR

JE Pistons auto part

JE Pistons

VW 1.8T 20V KIT 81.5

JE Pistons auto part

JE Pistons

VW TS1 2.0T TSI 22MM PIN 82.5MM 10

J

JE Pistons

VW 2.0T TSI 21M PIN 83.5MM 10.0

J

JE Pistons

VW 1.8T 20V 20MM PIN 83MM 8.5 FSR

Mahle auto part

Mahle

Engine Piston Ring Set 315-0109.005

JE Pistons auto part

JE Pistons

MIT 4B11 EVO X 2008+, 86MM BORE, -9

J

JE Pistons

VW 1.8T 20V KIT 82.0

G

Gates

Gates Performance Engine Water Pump

J

JE Pistons

UX 83.00MM 1.0/1.2/2.8 DLC

Gates auto part

Gates

Gates Steel V-Ribbed 6 Grooved (56 mm x 16 mm x 42 mm) - Flanged w/ Dust Cap

J

JE Pistons

UX 82.00MM 1.0/1.2/2.8 DLC

J

JE Pistons

AUDI 1.8T 8.5:1 KIT

J

JE Pistons

AUDI 1.8T 9.25:1 KIT

JE Pistons auto part

JE Pistons

VW 2.0T FSI 10.5 KIT

~(2 lbs. 6X4X4)~ Audi 2.0L CAGA CAGB CAGC CAHA CAHB CBAA CBAB CBBB CMEA (0.25MM) Piston With Rings

Mahle

~(2 lbs. 6X4X4)~ Audi 2.0L CAGA CAGB CAGC CAHA CAHB CBAA CBAB CBBB CMEA (0.25MM) Piston With Rings

~(2 lbs. 6X4X4)~ Audi 2.0L CAGA CAGB CAGC CAHA CAHB CBAA CBAB CBBB CMEA Piston With Rings

Mahle

~(2 lbs. 6X4X4)~ Audi 2.0L CAGA CAGB CAGC CAHA CAHB CBAA CBAB CBBB CMEA Piston With Rings

J

JE Pistons

AUDI 1.8T 9.25:1 KIT

JE Pistons auto part

JE Pistons

FORD -5CC FLAT TOP 1.230 X 4.000

M

Mahle

~(1 lbs. 5X4X4)~ Audi VW 2.0L (CAEBCAWBCBFACCTACCZACCZCCDNBCDNC) STD

JE Pistons auto part

JE Pistons

VW2.0T FS1 10.3:1 KIT

JE Pistons auto part

JE Pistons

CHEVROLET 350/383 -2CC DOME 1.125 X

FOR AUDI ABS CDTA CKVC CEZA SPUT

King Engine Bearings

FOR AUDI ABS CDTA CKVC CEZA SPUT

JE Pistons auto part

JE Pistons

FORD -5CC FLAT TOP 1.230 X 4.020

J

JE Pistons

FORD -5CC FLAT TOP 1.280 X 4.005

JE Pistons auto part

JE Pistons

FORD -5CC FLAT TOP 1.230 X 4.010

JE Pistons auto part

JE Pistons

VW 2.0T FSI 10.5 KIT

TIMING BELT TENSION

Dorman

TIMING BELT TENSION

TIMING BELT ADJUSTER

Dorman

TIMING BELT ADJUSTER

VLKSWGN 1.8L DISH -12.5CC 9:1 82MM

JE Pistons

VLKSWGN 1.8L DISH -12.5CC 9:1 82MM

J

JE Pistons

WISECO BMW M20B25 2.5 LTR 12V 6 CYL

JE Pistons auto part

JE Pistons

VW 2.0T TSI 23MM PIN 83MM 9.6

J

JE Pistons

VW 20V DISHED -14CC 1.1614 X 3.2283

J

JE Pistons

VW 2.0T TSI ULTRA SERIES 23MM PIN

JE Pistons auto part

JE Pistons

VW 2.0T FSI 83.5 KIT

J

JE Pistons

AUDI/VW EA113 -12.2CC DISH 1.1654 X

J

JE Pistons

VW 1.8T 20V KIT 82.5

J

JE Pistons

AUDI/VW EA113 -11.5CC DISH 1.1654 X

Gates auto part

Gates

Gates 4 Components (1 Belt 1 Tensioner 1 Hydraulic Tensioner w/Pulley Attached 1 Water Pump w/Plastic I

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