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.
Mahle
Piston Kit
Mahle
Piston Kit

Fel-Pro
Fel-Pro Volkswagen Tiguan OS 30821 Engine Oil Pan Gasket Set 20 Bolt Hole One Piece Gasket

Fel-Pro
Fel-Pro Volkswagen Jetta ES 72310 Engine Cylinder Head Bolt Set

Fel-Pro
Fel-Pro Volkswagen Jetta ES 71336 Engine Cylinder Head Bolt Washer Set

Fel-Pro
Fel-Pro Volkswagen Passat ES 71193 Engine Cylinder Head Bolt Set

Mahle
Piston Kit

Mahle
Piston Kit

Mahle
Piston

Gates
Gates 04-07 Mitsubishi Lancer 4-Cyl. 2.0L A.C. & P.S. Standard V-Ribbed Belt
Carrillo
Carrillo VW 1.8T 2.0 16V (9a) Pro-SA 3/8 WMC Bolt Connecting Rods (4 cyl)
Carrillo
Carrillo Volkswagen/Audi TSI w/22mm Pin 2.0 Pro-H 3/8 CARR Bolt Connecting Rods (Set of 4)
Carrillo
Carrillo VW 1.8T 16V/2.0L 16V (9a) 2.2L Pro-A 3/8 WMC Bolt Connecting Rods - Single

Melling
Oil Pump

Melling
Oil Pump

Fel-Pro
Fel-Pro Audi A4 Quattro HS 26608 PT PermaTorque Engine Cylinder Head Gasket Set

Eagle
Eagle Chevy 454 4.000in Crank 6.385in H-Beam 28cc Dome 4.350in Pistons Rotating Assembly

Fel-Pro
Fel-Pro Volkswagen Passat MS 96116 Exhaust Manifold Gasket Set
Wiseco
Wiseco Audi/VW 2.0L 82.50mm Bore 92.8mm Stroke -7.1cc EA888 Piston Kit - 4 Cyl

Fel-Pro
Fel-Pro Audi Q7 73350 Engine Oil Drain Plug Gasket

Fel-Pro
Fel-Pro Volkswagen Jetta 72969 Engine Oil Filter Adapter Gasket

Fel-Pro
Fel-Pro Volkswagen Tiguan 72417 Engine Valve Cover Grommet Set

Fel-Pro
Fel-Pro Volkswagen Tiguan 72396 Engine Oil Filter Adapter Seal

Fel-Pro
Fel-Pro Volkswagen Jetta 71277 Engine Oil Drain Plug

Fel-Pro
Fel-Pro Audi A4 Quattro 71258 Engine Oil Cooler Seal

Gates
Gates 05-08 Audi A4 4-Cyl. 2.0L Tensioner Assy. Belt Drive Tensioner

Gates
Gates 98-05 Volkswagen Passat V-6 2.8L Tensioner Assy. Belt Drive Tensioner

ACL
ACL Volkswagen EA888 Gen 3 TFSI 4cyl Turbo Standard w/Extra Oil Clearance Race Series Main Bearings
Gates
Gates 05-08 Audi A4 4-Cyl. 2.0L Idler Belt Drive Pulley

Gates
Gates 98-05 Volkswagen Passat 4-Cyl. 1.8L A.C. Belt Drive Pulley

Gates
Gates 09-12 Audi A4 4-Cyl. 2.0L Idler Belt Drive Pulley

Gates
Gates 2011 Audi Q7 V-6 3.0L Alt. & A.C. Belt Drive Pulley

Supertech
Supertech Retainer Audi 2.0T FSI (for Spring SPR-A2416-BE2 Beehive) - Set of 16

Gates
Gates 98-05 Volkswagen Passat 4-Cyl. 1.8L Fan Alt. & P.S. Belt Drive Tensioner
Gates
Gates 01 Audi A4 / 00-05 TT / 99-05 VW Beetle / 00-06 Golf / 00-05 Jetta / 00-01 Passat Timing Belt

Supertech
Supertech VW 2.0L TFSI 16V 28x5.96x101.8mm Sodium Filled Inconel Exhaust Valve - Single (D/S Only)
Supertech
Supertech VW 1.8T 20V 83mm (+2) CH 32.7mm -4.5cc Dish 9.6:1 CR Piston - Single (Excl Rings)

Supertech
Supertech VW 1.8T 20V 81mm 32.7mm CH -4cc Dish 9.3:1 CR Piston - Single (Excl Rings)

Supertech
Supertech Audi/VW 1.8L/2.7T 5V 27.9x5.96x105.1mm Blk Nitrided Intake Valve- Set of 18 (Req KPR-6S 7)
Gates
Gates Audi/Cadillac/Chevrolet/GMC/Jeep/Mercedes-Benz/Oldsmobile/Saab Micro-V Belt

Gates
Gates 99-05 Audi A4 / 01-05 VW Passat Timing Belt Kit w/ Water Pump
Supertech
Supertech VW 2.0L/1.8 16V/2.2L 5cyl 20V Dual Valve Spring Kit
Supertech
Supertech Cam Follower 24x24.2x15mm - Set of 12
Gates
Gates 96-06 Audi A4 / 97-04 A6 / 03-05 Toyota Celica / 03-08 Corolla Micro-V Serpentine Belt
Gates
Gates 97-00 Audi A4/A4Quattro / 98-00 VW Passat Timing Belt
Supertech
Supertech Audi/VW 1.8T 5V Black Nitrided Intake Valve - Set of 12
Gates
Gates 05-09 Audi A4 4 Cyl 2.0L Timing Belt

Gates
Gates Timing Belt Component Kit with Water Pump
Supertech
Supertech Audi/VW 1.8T 5V Triple Groove Black Nitride Exhaust Valve - Set of 12
Supertech
Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit
Supertech
Supertech VW/Audi 1.8T AEB Sodium Filled Inconel Exhaust Valve - +1mm Oversize - Set of 8
Supertech
Supertech Audi/VW 1.8T 5V Inconel Exhaust Valve - Set of 12
Carrillo
Carrillo Volkswagen/Audi TSI 2.0 Pro-H 3/8 CARR Bolt Connecting Rods (Set of 4)

Victor Reinz
MAHLE Original Audi 90 95-93 Camshaft Circular
ATI
ATI Crank Hub - ST - Audi - Street

Supertech
Supertech VW Titanium Retainer for 7mm Valves Stem Triple Groove - Set of 8

Supertech
Supertech Audi 1.8T/2.7T Manganese Bronze Int/Exh Valve Guide OD 11.045mm - Set of 12

Gates
Gates Micro-V Serpentine Belt 00-02 Audi S4

Gates
Gates 01 Audi A4/A6 / 98-05 VW Passat Timing Belt Kit w/ Water Pump
Carrillo
Carrillo Volkswagen / Audi 2.0L TFSI Pro-H 3/8 WMC Bolt Connecting Rods (SINGLE ROD)
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