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Audi S4 Performance Engine & Drivetrain Parts

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ES#4669283 - UH030-48-INA - Unitronic Carbon Intake System - Stock Turbo Inlet - improved throttle response, seamless integration and perfect fitment while greatly enhancing turbo induction sounds. - Unitronic - Audi

improved throttle response, seamless integration and perfect fitment while greatly enhancing turbo induction sounds. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Unitronic - Corporate Logo
ES#:
4669283
Mfg#:
UH030-48-INA
Ships in 5 Business Days
$2085.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3106524 - k70398fsstzKT - Stage 3 Endurance Clutch Kit - Designed for dedicated track cars. Conservatively rated at 480ft/lbs. - South Bend Clutch - Audi

Designed for dedicated track cars. Conservatively rated at 480ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Includes single mass flywheel

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106524
Mfg#:
K70398FSSTZKT
Ships in 1 Business Day
$2083.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4013557 - 034-106-3031 - 750CC EV14 Bosch Fuel Injector - Priced Each - The most advanced injector we offer. - Bosch - Audi

The most advanced injector we offer. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
4013557
Mfg#:
034-106-3031
Ships in 2 Business Days
$127.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4846368 - 034-509-0089 - Motorsport StreetSport Engine Mounts - Pair - Designed with extreme performance in mind and manufactured from billet aluminum and high-durometer Density Line rubber for better ride characteristics than polyurethane. - 034Motorsport - Audi

Designed with extreme performance in mind and manufactured from billet aluminum and high-durometer Density Line rubber for better ride characteristics than polyurethane. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4846368
Mfg#:
034-509-0089
Ships in 2 Business Days
$677.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4609907 - 043644LA01-2 - ECS Adjustable Short Throw Shifter With Rally Lever - Audi B8 A4/A5/S5/S5 - Reduce throw and height while gaining more precise shifts with ECS Tuning's Adjustable Short Throw Shifter. - ECS - Audi

Reduce throw and height while gaining more precise shifts with ECS Tuning's Adjustable Short Throw Shifter. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4609907
Mfg#:
043644LA01-2
In Stock
ON SALE!
Starting at $501.51 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
ES#4493297 - iesovz13TCU - Stage 3 IE Performance ECU Tune - Includes Stage 3 TCU Tune & POWERlink Cable - Easy upgrade into hybrid turbo power levels delivering up to 601HP and 615TQ. - Integrated Engineering - Audi

Easy upgrade into hybrid turbo power levels delivering up to 601HP and 615TQ. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4493297
Mfg#:
IESOVZ13TCU
In Stock
$1977.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3106520 - k70398fssoKT - Stage 3 Daily Clutch Kit - Designed for high-powered street cars while capable enough to handle the track. Conservatively rated at 525ft/lbs. - South Bend Clutch - Audi

Designed for high-powered street cars while capable enough to handle the track. Conservatively rated at 525ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Includes single mass flywheel

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106520
Mfg#:
K70398FSSOKT
Ships on Jun 24, 2026
$1953.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4716234 - 601-0243 - Audi B8/B8.5 MPI Kit - Black  - Engineered for achieving the highest performance from your 3.0T! - Precision Raceworks - Audi

Engineered for achieving the highest performance from your 3.0T! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4716234
Mfg#:
601-0243
In Stock
$1899.99 USD
Free Shipping
on orders $49 and up
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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*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 in 10 Business Days
$949.99 USD
Free Shipping
on orders $49 and up
ES#4736499 - 06M133026AKT - Ultimate Turbocharger Installation Kit - All hardware required for a successful install utilizing genuine components. - Assembled By ECS - Audi

All hardware required for a successful install utilizing genuine components. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4736499
Mfg#:
06M133026AKT
Ships in 2 Business Days
ON SALE!
$240.99

This product was last offered at the strikethrough price on
03-05-2026

$237.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2723181 - 000805ECS03AKT - Complete ECS Performance Engine Mount Kit - Audi B5 S4 - Includes ECS performance polyurethane engine mount and snub mount - ECS - Audi

Includes ECS performance polyurethane engine mount and snub mount affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2723181
Mfg#:
000805ECS03AKT
In Stock
ON SALE!
$394.99

This product was last offered at the strikethrough price on
05-02-2026

$375.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2855732 - FMCCRADS53T - Charge Cooler and Expansion Tank Upgrade Kit - Upgrade your supercharger cooling system - Forge - Audi

Upgrade your supercharger cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits B8.5 facelift models only (From the 2013 model year)

Brand:
Forge - Corporate Logo
ES#:
2855732
Mfg#:
FMCCRADS53T
Ships in 3 Business Days
$1871.99 USD
ES#4505751 - b9cpbov2017KT - VPS Intercooler To Throttle Charge Pipe - With BOV - Upgraded charge pipe kit for use with blow off valve included. - Verstarkt Performance Systems - Audi

Upgraded charge pipe kit for use with blow off valve included. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verstarkt Performance Systems - Corporate Logo
ES#:
4505751
Mfg#:
B9CPBOV2017KT
Ships on Sep 2, 2026
ON SALE! SAVE 48%
$324.99

This product was last offered at the strikethrough price on
05-02-2026

$170.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3183556 - 034-509-0008KT1 - Complete Density Line Performance Motor Mount Kit - Includes 034Motorsport Street Density mounts, active mount resistor bypass, and ECS performance Snub Mount - Assembled By ECS - Audi

Includes 034Motorsport Street Density mounts, active mount resistor bypass, and ECS performance Snub Mount affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3183556
Mfg#:
034-509-0008KT1
In Stock
$368.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4046137 - STS-B5S4L - JHM Solid Short Throw Shifter (Late Style) - If you desire the ultimate in shifting, the JH Motorsports B5 S4, C5 A6-allroad Late Style Solid Short Throw Shifter is the perfect solution! - JH Motorsports  - Audi

If you desire the ultimate in shifting, the JH Motorsports B5 S4, C5 A6-allroad Late Style Solid Short Throw Shifter is the perfect solution! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*For late style shifters - Please see shifter comparison links in product description*

Brand:
JH Motorsports  - Corporate Logo
ES#:
4046137
Mfg#:
STS-B5S4L
Ships in 1 Business Day
$365.66 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Designed for track use while still streetable. Conservatively rated at 400ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Includes single mass flywheel

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106519
Mfg#:
K70398FHDOFEKT
Ships in 1 Business Day
$1822.99 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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