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Audi A4 Performance Engine & Drivetrain Parts

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ES#4362289 - UH003-IN4 - Unitronic 3" Air Filter (Gen 1) - Unitronic - Audi Volkswagen

Brand:
Unitronic - Corporate Logo
ES#:
4362289
Mfg#:
UH003-IN4
In Stock
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

The Turbo Systems hybrid turbocharger is an original turbocharger that has been reworked to suit larger compressor and turbine wheels, along with a ball bearing cartridge.

Brand:
Emmanuele Design - Corporate Logo
ES#:
4415827
Mfg#:
TS-B9-STG1
Ships in 2 Business Days
$2000.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3220796 - 017429ECS01 -  Luft-Technik Intake Air Scoop - Audi B8 A4/A5/S4/S5 - Extends farther down behind the grille to direct more air to the intake system - ECS - Audi

Extends farther down behind the grille to direct more air to the intake system 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3220796
Mfg#:
017429ECS01
In Stock
ON SALE! SAVE 44%
$178.99

This product was last offered at the strikethrough price on
05-14-2026

$99.99 USD
Free Shipping
ES#4472379 - 02025-TD8R-S - 850 Series - Race w/flywheel - Designed for high-performance track driving capable of approximately 800tf. lbs - Clutch Masters - Audi

Designed for high-performance track driving capable of approximately 800tf. lbs

Brand:
Clutch Masters - Corporate Logo
ES#:
4472379
Mfg#:
02025-TD8R-S
Ships in 4 Business Days
$1988.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4845820 - EA888-WPC-RB - WPC-Treated Race Series Connecting Rod Bearing Set - 2.0T - Stronger & smoother bearings, with less friction and improved oiling for your VW or Audi! - ECS - Audi Volkswagen

Stronger & smoother bearings, with less friction and improved oiling for your VW or Audi! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4845820
Mfg#:
EA888-WPC-RB
In Stock
ON SALE! SAVE 25%
$374.99

This product was last offered at the strikethrough price on
06-13-2026

$281.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Designed for extreme power that needs to be put to the wheels. Conservatively rated at 550+ ft/lbs. Includes single mass flywheel

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106539
Mfg#:
K70350FSSXKT
Ships in 2 Business Days
$1953.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3082363 - F23L-CERAMIC - F23L Hybrid Turbocharger - Complete bolt on Turbo upgrade - With ceramic coated turbine/manifold option - FrankenTurbo - Audi

Complete bolt on Turbo upgrade - With ceramic coated turbine/manifold option

Brand:
FrankenTurbo - Corporate Logo
ES#:
3082363
Mfg#:
F23L-CERAMIC
Ships on Nov 19, 2026
$1949.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#3106544 - k70614hdofeKT - Stage 2 Clutch Kit - Endurance  - Designed for track use while still streetable - Rated at 440 ft/lbs - South Bend Clutch - Audi

Designed for track use while still streetable - Rated at 440 ft/lbs

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106544
Mfg#:
K70614HDOFEKT
Ships in 2 Business Days
$1920.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4017053 - B9A4PWRPK - Build Your Own Power Package - Audi B9 A4 2.0T - Go from mild to wild! Select the options you want for your build. - Assembled By ECS - Audi

Go from mild to wild! Select the options you want for your build. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4017053
Mfg#:
B9A4PWRPK
Back Ordered
ON SALE!
Starting at $0.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4045950 - B6B7RearLSDMT - JHM Helical Rear Limited Slip Differential - Helical gears respond to changes in traction conditions very quickly - Improves traction and predictability of vehicle behavior: both rear wheels will spin at the same rate. - JH Motorsports  - Audi

Helical gears respond to changes in traction conditions very quickly - Improves traction and predictability of vehicle behavior: both rear wheels will spin at the same rate. *Fitment confirmed in ETS, EXZ, & ETQ diff codes - Does not fit in some 2007+ differential cases - Please see fitment notes in product description for co

Brand:
JH Motorsports  - Corporate Logo
ES#:
4045950
Mfg#:
B6B7REARLSDMT
Ships on Nov 18, 2026
$949.99 USD
Free Shipping
on orders $49 and up
ES#4899976 - 045960LA01-01 - Billet Aluminum 1.8T Fuel Injector Cup - Priced Each - Upgrade to heavy-duty billet aluminum construction for maximum durability! - ECS - Audi Volkswagen

Upgrade to heavy-duty billet aluminum construction for maximum durability! 10X Entries Into Our F80 M3 Sweepstakes
10X Entries For Our Spin To Win Sweepstakes!
For Vehicles with Engine Codes ATW and AWM.

Brand:
ECS - Corporate Logo
ES#:
4899976
Mfg#:
045960LA01-01
In Stock
ON SALE! SAVE 16%
$20.99

This product was last offered at the strikethrough price on
06-13-2026

$17.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3365 - 058145703KO4WGKT - K04 0015 Turbocharger With Installation Kit - Great bolt on performance upgrade that can be used with or without specific programming - Assembled By ECS - Audi Volkswagen

Great bolt on performance upgrade that can be used with or without specific programming 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3365
Mfg#:
058145703KO4WGKT
Back Ordered
$1938.99

This product was last offered at the strikethrough price on
08-25-2026

$1893.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4069832 - CTSFPK004 - CTS Turbo Stage 3 Fuel Pump Kit - Walbro 525 - Fuel pump system to support all the power that your engine can handle! - CTS - Audi Volkswagen

Fuel pump system to support all the power that your engine can handle!

Brand:
CTS - Corporate Logo
ES#:
4069832
Mfg#:
CTSFPK004
Ships in 8 Business Days
ON SALE! SAVE 15%
$444.99

This product was last offered at the strikethrough price on
09-29-2026

$378.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3086222 - SP3080P - SP Series Cold Air Intake - Polished - Better airflow for more power - Injen - Audi

Better airflow for more power CARB certified for sale in all 50 states

Brand:
Injen - Corporate Logo
ES#:
3086222
Mfg#:
SP3080P
EO#:
D-476-8
In Stock at Vendor
$471.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3463401 - 001424001707KT - Sachs Performance Clutch Kit - Includes high-clamp pressure plate and full-face organic clutch disc - Handles up to 400 lb-ft of torque - SACHS Performance - Audi

Includes high-clamp pressure plate and full-face organic clutch disc - Handles up to 400 lb-ft of torque To be used in conjuction with factory flywheel and release bearing

Brand:
SACHS Performance - Corporate Logo
ES#:
3463401
Mfg#:
001424001707KT
Ships in 9 Business Days
$931.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine & Drivetrain Parts

Worn mounts, bushings, and other drivetrain components rob performance. Replace or upgrade your drivetrain with our extensive catalog of mounts, bushings, clutch kits, and more.

Let us help you find the parts that fit your Audi

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Manufacturer names and/or part numbers are used only for identification purposes.

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