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 gaskets and seals Parts
287 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.

Fel-Pro
Fel-Pro Volkswagen Jetta TCS 46005 Engine Camshaft Seal Kit

Fel-Pro
Fel-Pro BMW Z3 25589 Multi-Purpose O-Ring

Fel-Pro
Fel-Pro Volkswagen Passat HS 26182 PT PermaTorque Engine Cylinder Head Gasket Set

Fel-Pro
Fel-Pro Volkswagen Jetta TCS 45038 Engine Crankshaft Seal Kit

Fel-Pro
Fel-Pro Volkswagen Tiguan 36130 Engine Coolant Outlet Gasket

Fel-Pro
Fel-Pro Volkswagen Passat 73064 Engine Crankshaft Seal Retainer Gasket

Fel-Pro
Fel-Pro Jeep Grand Cherokee SS 71074-3 Engine Valve Stem Oil Seal Set

Fel-Pro
Fel-Pro Volkswagen Jetta SS 71074-1 Engine Valve Stem Oil Seal Set

Fel-Pro
Fel-Pro Volkswagen Jetta SS 71074 Engine Valve Stem Oil Seal Set

Fel-Pro
Fel-Pro Volkswagen Tiguan 35924 Engine Coolant Thermostat Housing Seal

Fel-Pro
Fel-Pro Volkswagen Jetta 72485 Engine Oil Cooler Seal

Fel-Pro
Fel-Pro Volkswagen Tiguan 35872 Engine Water Pump Gasket

Fel-Pro
Fel-Pro 16-18 Audi RS7/18-20 SQ5/10-12 S5/15-16 S8 Multi-Purpose O-Ring

Fel-Pro
Fel-Pro Volkswagen Jetta 35838 Engine Coolant Thermostat Housing Gasket

Fel-Pro
Fel-Pro Audi A4 Quattro 71259 Engine Oil Filter Adapter Seal

Fel-Pro
Fel-Pro Ford Ranger 35763 Multi-Purpose O-Ring

Victor Reinz
MAHLE Original Audi A4 06-02 Conversion Set
Victor Reinz
MAHLE Original Audi A3 08-06 Conversion Set

Victor Reinz
MAHLE Original Audi A4 08-06 Vacuum Pump Mounting
Victor Reinz
MAHLE Original Audi A4 00-97 Water Pump Gasket

Victor Reinz
MAHLE Original Audi A4 08-06 Timing Cover Right

Victor Reinz
MAHLE Original Audi A4 06 Water Outlet Gasket

Victor Reinz
MAHLE Original Audi 80 90-88 Water Outlet Gasket

Victor Reinz
MAHLE Original Audi A4 08-06 Timing Cover Left

Victor Reinz
MAHLE Original Audi A4 Quattro 10-09 Conversion Set

Victor Reinz
MAHLE Original Audi A4 Quattro 10-09 Vacuum Pump Mounting

Victor Reinz
MAHLE Original Audi A4 Quattro 09 Valve Cover Gasket (Left)

Victor Reinz
MAHLE Original Audi A4 05-02 Water Pump Gasket

Victor Reinz
MAHLE Original Audi A3 13-08 Timing Cover Gasket

JE Pistons
JE Pro Seal VW 1.8T 20V 83.8mm 0.055in Headgasket (ref C4559-051)

Victor Reinz
MAHLE Original Audi A4 06-97 Air Pump Gasket

Victor Reinz
MAHLE Original Audi 90 95-93 Plenum Chamber
Victor Reinz
MAHLE Original Audi A4 08-06 Conversion Set

Victor Reinz
MAHLE Original Audi A3 12-09 Oil Pan Set

Victor Reinz
MAHLE Original Audi A4 06-00 Turbo Oil Drain

JE Pistons
JE Pro Seal VW 1.8T 20V 83mm 0.055in Head Gasket (ref C4558-051)

Victor Reinz
MAHLE Original Audi A4 Quattro 09 Valve Cover Gasket (Right)
Victor Reinz
MAHLE Original Audi A4 01-97 Conversion Set

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16V TFSI EA888 84mm Bore .070in MLS Cylinder Head Gasket w/ Valvelift

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .066in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .060in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .051in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .045in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .036in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .030in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .027in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .098in MLS Cylinder Head Gasket - 83mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .051in MLS Cylinder Head Gasket - 83mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .045in MLS Cylinder Head Gasket - 83mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .036in MLS Cylinder Head Gasket - 83mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .030in MLS Cylinder Head Gasket - 83mm Bore

Cometic Gasket
Cometic Volkswagen 1.8/2.0L 16v TFSI EA888 .027in MLS Cylinder Head Gasket - 83mm Bore

Cometic Gasket
Cometic Volkswagen 2.0L 16v TFSI EA888 .070in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 2.0L 16V TFSI EA888 .045in MLS Cylinder Head Gasket 84mm Bore w/o Valvelift

Cometic Gasket
Cometic Volkswagen 2.0L 16v TFSI EA888 .036in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 2.0L 16v TFSI EA888 .027in MLS Cylinder Head Gasket - 84mm Bore

Cometic Gasket
Cometic Volkswagen 2.0L 16v TFSI EA888 .066in MLS Cylinder Head Gasket - 82.5mm Bore

Cometic Gasket
Cometic Volkswagen 2.0L 16v TFSI EA888 .051in MLS Cylinder Head Gasket - 82.5mm Bore

Cometic Gasket
Cometic Volkswagen 2.0L 16v TFSI EA888 .045in MLS Cylinder Head Gasket - 82.5mm Bore

Cometic Gasket
Cometic Volkswagen 2.0L 16v TFSI EA888 .036in MLS Cylinder Head Gasket - 82.5mm Bore
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