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?

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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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JE Pistons auto part

JE Pistons

JE Pistons VW 1.8T 20V 20MM PIN 82.5MM 9.25 FSR Piston Kit (Set of 4)

King Engine Bearings auto part

King Engine Bearings

King Engine Bearings Volkswagen 2.0L FSI/TFSI Performance Rod Bearing Set - Size STD

Cometic Gasket auto part

Cometic Gasket

Cometic 98-06 VW/Audi 1.8L Turbo 82mm .051in MLS Head Gasket

JE Pistons auto part

JE Pistons

JE Pistons AUDI 1.8T 9.25:1 KIT Set of 4 Pistons

King Engine Bearings auto part

King Engine Bearings

King Engine Bearings AUDI AAH, BUG, CCWA,CTBA Thrust Washer Set

JE Pistons auto part

JE Pistons

JE Pistons VW 1.8T 20V KIT 81.5 Set of 4 Pistons

JE Pistons auto part

JE Pistons

JE Pistons 2013+ VW/Audi 2.0T TSI (22mm Pin) 82.5mm Bore 10.0:1 CR -4.5cc Dish FSR Piston - Single

Mahle auto part

Mahle

Mahle MS Piston Set VW TFSi 2.0L 83.50mm Bore 92.8mm Stroke 144mm Rod 20mm Pin -11cc 9.3 CR Set of 4

Wiseco auto part

Wiseco

Wiseco Volkswagen 1.8T 8V Dished -7cc 81.5 Piston Shelf Stock Kit

JE Pistons auto part

JE Pistons

JE Pistons VW 1.8T 20V (20mm Pin) 81.5mm Bore FSR Piston Kit (Set of 4)

JE Pistons auto part

JE Pistons

Volkswagen 2.0L Turbo, 82.50 Bore, Flat, Set of 4

King Engine Bearings auto part

King Engine Bearings

King Volkswagen 1781cc Turbo & 1984cc Connecting Rod Bearing Set (Size STDX) (Set of 4)

JE Pistons auto part

JE Pistons

JE Pistons VW 2.0T FSI Ultra Series 20mm PIN - Set of 4 Pistons

Go Fast Bits auto part

Go Fast Bits

GFB 06-08 Volkswagen/Audi 2.0T Super Lightweight Non-Underdrive Crank Pulley Suits

J

JE Pistons

JE Pistons VW 1.8T 20V KIT 82.5 Set of 4 Pistons

ACL auto part

ACL

ACL 70-83 VW 4 2000-On Coated Rod Bearing Set (No Notch)

ACL auto part

ACL

ACL VW 4 1970-1983cc 2000 on Engine Connecting Rod Bearing Set

ACL auto part

ACL

ACL VW 4 1780-1983cc 1983-on Engine Connecting Rod Bearing Set

ACL auto part

ACL

ACL VW 4 1780-1983cc 1983-on Engine Connecting Rod Bearing Set

ACL auto part

ACL

ACL VW 4 1780-1983cc 1983-on Engine Connecting Rod Bearing Set

ACL auto part

ACL

ACL VW 4 1780-1983cc 1983-on Engine Connecting Rod Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc Std Size High Perf w/ Extra Oil Clearance Rod Bearing Set - CT-1 Coated

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc Std Size High Perf w/ Extra Oil Clearance Main Bearing Set - CT-1 Coated

ACL auto part

ACL

ACL Volkswagen 2.0L TSI/TFSI EA888 Standard Size High Performance Main Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc Standard Size High Performance Main Bearing Set

ACL auto part

ACL

ACL Audi TFSI 1984cc 4 cyl. (CDL) S3, TTS .25mm Oversized High Performance Rod Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc Standard Size High Performance Main Bearing Set - CT-1 Coated

ACL auto part

ACL

ACL VW 2.0L TSI/TFSI EA888 4cyl 0.25 Oversized High Performance Main Bearing Set

ACL auto part

ACL

ACL VAG 1.4i/1.6i/1.8t/2.0TFSI .25mm Oversized Performance Rod Bearing Set

ACL auto part

ACL

ACL VW 14i/16i/18t/20TFSi/20TSI Standard Size High Performance Rod Bearing Set

ACL auto part

ACL

ACL Audi TFSI 1984cc 4 cyl. (CDL) S3, TTS Standard Size High Performance Rod Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc Standard Size High Performance Rod Bearing Set - CT-1 Coated

ACL auto part

ACL

ACL VW 2.0L TSI/TFSI EA888 4cyl Standard Size High Performance Main Bearing Set w/.001 Oil Clearance

ACL auto part

ACL

ACL Audi A3/A4/A6 -VW Jetta/Golf Passat Standard Size High Performance Rod Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc Standard Size High Performance w/ Extra Oil Clearance Main Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc 0.50 Oversized High Performance Main Bearing Set

ACL auto part

ACL

ACL Audi TFSI 1984cc 4 cyl. (CDL) S3, TTS .025mm Oversized High Performance Rod Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc 0.25 Oversized High Performance Main Bearing Set

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc 0.25 Oversized High Performance Main Bearing Set - CT-1 Coated

ACL auto part

ACL

ACL Audi TFSI 1984cc 4 cyl. (CDL) Standard High Performance w/ Extra Oil Clearance Rod Bearing

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc 0.25 Oversized High Performance Rod Bearing Set - CT-1 Coated

ACL auto part

ACL

ACL VW/Audi 1781cc/1984cc 0.025 Oversized High Performance Rod Bearing Set - CT-1 Coated

aFe auto part

aFe

aFe 05-19 VW 1.8L/2.0L w/o Oil Sensor Engine Oil Pan Raw POWER Street Series w/ Machined Fins

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