QUATTRO MEETS PRACTICALITY
B5 through B9 — Audi's compact sedan with available Quattro AWD and turbo power.
Audi A4 HERITAGE
THE QUATTRO COMPACT
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
CATEGORIES
Top product categories for the Audi A4
BRANDS
Top brands for Audi A4 builds
READY TO BUILD YOUR AUDI A4?
Pick your year and trim to shop verified-fit Audi A4 parts.
Shop all Audi A4 parts →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.

Ferrea Racing
Ferrea Audi/VW 1.8T 20V/2.7T 30V Intake Spring Seat Locators - Set of 6 (For S10056)
Cloyes Gear & Products
ENGINE TIMING CHAIN GUIDE
Cloyes Gear & Products
BELT IDLER

Dorman
CAMSHAFT SENSOR
Ferrea Racing
Ferrea Audi Spring Seat Locator - Single (Required for S10055 / Drop Ship Only)

Ferrea Racing
Ferrea VW 1.8T 20V Exhaust Dual Valve Spring - Single (Drop Ship Only)

Ferrea Racing
Ferrea Audi 2.0T FSI DOHC 16 Valve Lifter Shim - Single

WIX
OIL FILTER

Dorman
SPLASH SHIELD SCREW/CLIP

WIX
OIL FILTER

Ferrea Racing
Ferrea Audi Spring Seat Locator - Single (Required for S10056 / Drop Ship Only)
Cloyes Gear & Products
TIMING GEARS
Cloyes Gear & Products
TIMING BELT

WIX
OIL FILTER

Mahle
Valve Cover Set AUDI 2976CC 3.0L AVK BGN 2002-2006
Clevite
INTAKE VALVE

Mahle
Mahle Oil Filter Audi Allroad 4.2l 2003-2005 A8 S8 4.2l 5.2l 2004 - 2005

Mahle
Audi 2.0L Turbo DOHC A3 A4 Quattro TT Quattro 2009

Clevite
AUDI / VOLKSWAGEN 1984CC 2.0L BPGBPYBWTCDMA 20052014 TIMING COVER SET

Dorman
OIL DRAIN PLUG M14-1.50

ACL
ACL Bearings VW 4 1595-1781-1984cc 1983 on STD
Mahle
AUDI 3.2L BKH 2005-2009
Clevite
VW 1984CC 2.0L TURBO L4 BPY 20062007 VALVE COVER GASKET
Clevite
THERMOSTAT HOUSING GSKT.

Mahle
AUDI 3.2L DOHC 24V BKH 2005-2006
Clevite
AUDI 3123CC 3.2L BKH 20052009 VALVE COVER GASKET (RIGHT)
Clevite
EXHAUST VALVE
Clevite
AUDI 3.2L DOHC 24V BKH 20052006 WATER OUTLET GASKET

Mahle
~(1 lbs. 8X8X4)~ AUDI / VW 3.0L 3.2L DOHC 24V 2005-2012

Bosch
OIL FILTER
Bosch
OIL FILTER

Mahle
~(0.4 lbs. 24X6X0)~ 49-56 GM V8 324cid 317cid 303cid
Clevite
SLEEVE ASSEMBLY RING SET

Clevite
SLEEVE ASSEMBLY RING SET

Clevite
EXHAUST VALVE

Clevite
INTAKE VALVE
Mahle
~(0.1 lbs. 8X5X0)~ Timing Cover Gasket 14-17 Audi/VW 1.8L/2.0L
Mahle
VW 2.0L TURBO BPY 2006-2008 CCTA 2008 CBFA 2008

King Engine Bearings
FOR AUDI AUK BKH BYU
Mahle
~(0 lbs. 6X4X0)~ Volkswagen / BMW
Hella
OIL PRESSURE SWITCH VAG
Mahle
Audi:1.5L1.6L1.7L1.8L1.9L2.0L(70-91) VW:1.51.6L(73-85)1.8L(84-88)

Mahle
Sleeve Assembly Ring Set Volkswagen PISTON RING SET-LV-Piston Ring Set-PISTON RING SET

Mahle
Sleeve Assembly Ring Set PISTON RING SET-LV-Piston Ring Set-PISTON RING SET
Mahle
Sleeve Assembly Ring Set Volkswagen PISTON RING SET-LV-Piston Ring Set-Piston ring set

Mahle
VW-Pass 1.9L TDI ALH 10 00-2004 BEW 2004-2006 BRM 2005-2006
Clevite
SLEEVE ASSEMBLY RING SET

Clevite
INTAKE VALVE

Mahle
AUDI 2771CC 2.8L SOHC 12V 1996-1998

Clevite
AUDI / VOLKSWAGEN 1984CC 2.0L GASOLINE TURBOCHARGED 20082014 VALVE COVER SET

Hella
SENSOR CAMSHAFT POSITION

Clevite
AUDI 2976CC 3.0L 20022006 TIMING COVER SET

Clevite
MAHLE FILTERS
Mahle
Oil Pan Set HYUNDAI 1975CC 2.0L BETA 1997-2007

Clevite
AUDI / VW 3.0L 3.2L DOHC 24V 20052012 CYLINDER HEAD BOLTS

Mahle
Engine Oil Filter
Dorman
ELBOW HOSE
Clevite
PISTON PIN BUSHING

Mahle
AUDI/VW 1.8LAND 2.0L 2013-2018 Cylinder Head Bolts
Mahle
Volkswagen ABA SOHC 2.0L 1993-2002
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.
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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