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.

Gates
Gates 4 Components (1 Belt 1 Tensioner 1 Hydraulic Tensioner w/Pulley Attached 0 Idlers 1 Water Pump w

Gates
TIMING CHAIN COMPONENT KITS
JE Pistons
VW 2.0T FSI ULTRA SERIES 20MM PIN
Gates
Gates 3G2X50FT - Global G2 2-Wire Braid Hose - SAE 100R2 Type AT - 3/16 x 50 (6025 psi)

K&N Engineering
K&N Oil Filter OIL FILTER; AUTOMOTIVE

Fluidampr
Fluidampr VW 2000-2005 1.8L Turbo Motor (4 bolt hole mounting) Steel Internally Balanced Damper

Fel-Pro
Fel-Pro Audi A4 Quattro ES 73767 Engine Oil Cooler Gasket Set

Fel-Pro
Fel-Pro Audi Q7 MS 97587 Exhaust Manifold Gasket Set
Supertech
Supertech VW TFSI Connecting Rod Forged 4340 H-Beam C-C Length 144mm - Set of 4

Fel-Pro
Fel-Pro Audi Q7 BS 40787 Engine Crankshaft Seal Kit

Fel-Pro
Fel-Pro Volkswagen Jetta TCS 46263 Engine Camshaft Seal Kit
Supertech
Supertech Audi/VW EA113 Std Triple Groove Inconel Exhaust Valve - Set of 8

Fel-Pro
Fel-Pro Volkswagen Jetta MS 97642 Exhaust Manifold Gasket Set

Gates
Gates 06-08 Volkswagen Jetta 4-Cyl. 2.0L PCV Valve Crankcase Vent Valves

Gates
Gates 02-05 Audi A4 4-Cyl. 1.8L PCV Valve Kit Crankcase Vent Valves

Gates
Gates 98-02 Volkswagen Passat V-6 2.8L Tube To Intake Manifold Emission Control Hose
Gates
Gates 02-03 Audi A4 V-6 3.0L Valve Cover To Valve Cover Emission Control Hose

Gates
Gates 13-17 Audi Q5 4-Cyl. 2.0L Engine Variable Valve Timing Solenoid

Gates
Gates 18-21 Volkswagen Tiguan 4-Cyl. 2.0L Engine Variable Valve Timing Solenoid
Gates
Gates 98-05 Volkswagen Passat V-6 2.8L Left Side Engine Variable Valve Timing Solenoid
Gates
Gates 98-05 Volkswagen Passat V-6 2.8L Right Side Engine Variable Valve Timing Solenoid

Gates
Gates 09-12 Audi Q5 V-6 3.2L Engine Variable Valve Timing Solenoid
Gates
Gates 06-09 Volkswagen Jetta 4-Cyl. 2.0L Engine Variable Valve Timing Solenoid

Gates
Gates 97-00 Audi A4 4-Cyl. 1.8L Oil Separator To Tee Emission Control Hose

Gates
Gates 09-16 Audi A4 4-Cyl. 2.0L Engine Variable Valve Timing Solenoid

Gates
Gates 05-14 Volkswagen Jetta 5-Cyl. 2.5L Engine Variable Valve Timing Solenoid

Gates
Gates 00-05 Volkswagen Jetta 4-Cyl. 1.8L Engine Variable Valve Timing Solenoid
Gates
Gates 06-08 Volkswagen Jetta 4-Cyl. 2.0L Engine Variable Valve Timing Sprocket
Gates
Gates 02-06 Audi A4 V-6 3.0L Timing Belt Component Kit w/Water Pump

Supertech
Supertech Titanium Retainer for Audi 5V Intake Spring SPR-A2095 - Set of 12
Supertech
Supertech Titanium Retainer for SPR-H1000 Series - Set of 8

Supertech
Supertech Titanium Retainer for SPR-H1000 Series - Set of 24
Gates
Gates 09-14 Volkswagen Jetta 4-Cyl. 2.0L Diesel Timing Belt Component Kit

Gates
Gates 02-06 Audi A4 V-6 3.0L Timing Belt Component Kit

Gates
Gates 98-00 Volkswagen Passat 4-Cyl. 1.8L Timing Belt Component Kit

Gates
Gates 98-05 Volkswagen Passat V-6 2.8L Timing Belt Component Kit

Gates
Gates 13-17 Audi Q5 4-Cyl. 2.0L Accessory Belt Drive Kit (Standard)

Gates
Gates 18-21 Volkswagen Tiguan 4-Cyl. 2.0L Accessory Belt Drive Kit (Standard)

GSC Power Division
GSC P-D Audi DAZA 33.9mm Head STD 104mm Long Chrome Polished Intake Valve - Set of 10
Gates
Gates 98-00 Volkswagen Passat 4-Cyl. 1.8L Cam. Tensioner Hyd. Assy. Timing Belt Tensioner

Gates
Gates 99-06 Audi A4 4-Cyl. 1.8L Cam. Tensioner Hyd. Assy. Timing Belt Tensioner

Gates
Gates 99-06 Audi A4 4-Cyl. 1.8L Cam. Tensioner Pulley Timing Belt Pulley
Gates
Gates 00-05 Volkswagen Jetta 4-Cyl. 1.8L Cam. Tensioner Pulley Timing Belt Pulley

Gates
Gates 12-15 Volkswagen Passat 4-Cyl. 2.0L Diesel Cam. Upper Timing Belt Pulley

Gates
Gates 06-09 Volkswagen Jetta 4-Cyl. 2.0L Cam. Lower Timing Belt Pulley

Gates
Gates 02-06 Audi A4 V-6 3.0L Cam. Belt Automotive Timing Belt
Gates
Gates 97-00 Audi A4 4-Cyl. 1.8L Cam. Belt High Performance Timing Belt

Gates
Gates 98-00 Volkswagen Passat 4-Cyl. 1.8L Cam. Belt Automotive Timing Belt

Gates
Gates 98-05 Volkswagen Passat V-6 2.8L Cam. Belt Automotive Timing Belt

Gates
Gates 18-21 Volkswagen Tiguan 4-Cyl. 2.0L Tensioner Assy. Belt Drive Tensioner

Gates
Gates 09-12 Audi A4 4-Cyl. 2.0L Tensioner Assy. Belt Drive Tensioner

Gates
Gates 09-12 Audi Q5 V-6 3.2L Tensioner Assy. Belt Drive Tensioner

Gates
Gates 02-06 Audi A4 V-6 3.0L Tensioner Assy. Belt Drive Tensioner

Gates
Gates 2017 Audi A4 4-Cyl. 2.0L PCV Valve Crankcase Vent Valves

Gates
Gates 05-09 Audi A4 4-Cyl. 2.0L PCV Valve Crankcase Vent Valves

CP Pistons
CP Piston Audi/VW 1.8L 20 Valve - Bore (83.0mm) - Size (+2.0) - CR (8.5) - Single Piston
Supertech
Supertech Audi/VW 2.5T FSI Inconel Exhaust Valve 28.00mm (std) Head Dia. - Set of 10

Mahle
Piston Kit

Mahle
Piston Kit

Fel-Pro
Fel-Pro Audi A4 Quattro OS 30864 Engine Oil Pan Gasket Set 25 Bolt Hole One Piece Gasket
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