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Audi B5 A4 Quattro 1.8T

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Audi B5 A4 Quattro 1.8T Performance Engine & Drivetrain Parts

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Adjustable Fuel Pressure Regulator

ES#4158836 - 034-106-5015 - Adjustable Fuel Pressure Regulator - Works as a replacement for most Bosch fuel pressure regulators. Adjustable from 3.3-5 BAR - 034Motorsport - Audi Volkswagen

Works as a replacement for most Bosch fuel pressure regulators. Adjustable from 3.3-5 BAR affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4158836
Mfg#:
034-106-5015
In Stock
$129.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 4 Extreme Clutch Kit

ES#3098862 - k70205fssxKT - Stage 4 Extreme Clutch Kit - Designed for extreme power that needs to be put to the wheels. Conservatively rated at 525+ ft/lbs. - South Bend Clutch - Audi Volkswagen

Designed for extreme power that needs to be put to the wheels. Conservatively rated at 525+ ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
South Bend Clutch - Corporate Logo
ES#:
3098862
Mfg#:
K70205FSSXKT
Ships in 1 Business Day
$1629.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RA4 240mm Clutch Conversion Kit - Stage 1

ES#5485 - RA4S1-STEEL - RA4 240mm Clutch Conversion Kit - Stage 1 - ECS RA4 Lightweight Flywheel with the Audi S4 clutch kit - ECS - Audi Volkswagen

ECS RA4 Lightweight Flywheel with the Audi S4 clutch kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
5485
Mfg#:
RA4S1-STEEL
Ships on Aug 11, 2026
Auto Notify
ON SALE!
$829.99

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

$788.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum 1.8T Fuel Injector Cup - Priced Each

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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary 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 20%
$19.99

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

$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supertech Stainless Intake Valve Kit

ES#3647524 - ST-AIVN-1103KT - Supertech Stainless Intake Valve Kit - Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals - Assembled By ECS - Audi Volkswagen

Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
*Existing factory triple-groove valve keepers are to be reused*

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647524
Mfg#:
ST-AIVN-1103KT
Ships in 6 Business Days
$373.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wavetrac Rear Differential

ES#4266266 - 18-309-180WK - Wavetrac Rear Differential - Upgrade your vehicles differential! - Wavetrac - Audi

Upgrade your vehicles differential! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wavetrac - Corporate Logo
ES#:
4266266
Mfg#:
18-309-180WK
Ships in 2 Business Days
$1495.00 USD
Free Shipping
on orders $49 and up

VC-30 Water Methanol Controller (Boost)

ES#4623922 - SN0-60400 - VC-30 Water Methanol Controller (Boost) - Proportionally injects more or less water/methanol according to boost pressure - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Proportionally injects more or less water/methanol according to boost pressure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4623922
Mfg#:
SN0-60400
In Stock at Vendor
$184.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

1.8T Performance Ignition Service Kit

ES#5338629 - 056059LA084ISKT2 - 1.8T Performance Ignition Service Kit - Featuring one step colder, copper core NGK spark plugs & ECS performance ignition coils for increased spark energy. - ECS - Audi Volkswagen

Featuring one step colder, copper core NGK spark plugs & ECS performance ignition coils for increased spark energy. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with Engine Codes ATW and AEB (Bolt-In Style Ignition Coils)

Brand:
ECS - Corporate Logo
ES#:
5338629
Mfg#:
056059LA084ISKT2
Ships in 5 Business Days
ON SALE! SAVE 25%
$176.99

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

$132.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Fuel Rail - black Finish

ES#2794185 - IEFUVA1BK - Billet Fuel Rail - black Finish - Performance 1 piece fuel rail with style - Integrated Engineering - Audi Volkswagen

Performance 1 piece fuel rail with style affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794185
Mfg#:
IEFUVA1BK
In Stock
$175.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.0T Coil Pack Conversion Kit - Stage 2

ES#2713402 - 002598ECS11KT - 2.0T Coil Pack Conversion Kit - Stage 2 - Includes anodized black conversion plate -w- red 2.0T coils and red hold down kit - ECS - Audi Volkswagen

Includes anodized black conversion plate -w- red 2.0T coils and red hold down kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits ATW & AWM engine code models only

Brand:
ECS - Corporate Logo
ES#:
2713402
Mfg#:
002598ECS11KT
In Stock
ON SALE!
$358.99

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

$348.22 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Performance Rod Bearing Set - Standard

ES#4845793 - 4B1606H-STD - High Performance Rod Bearing Set - Standard - Includes upper and lower bearing shells for a complete rod bearing replacement. - ACL - Audi Volkswagen

Includes upper and lower bearing shells for a complete rod bearing replacement. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ACL - Corporate Logo
ES#:
4845793
Mfg#:
4B1606H-STD
In Stock
$61.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RA4 240mm Clutch Conversion Kit - Stage 3

ES#5487 - RA4S3-STEEL - RA4 240mm Clutch Conversion Kit - Stage 3 - ECS RA4 Lightweight Flywheel with the Clutch Masters Stage 3 clutch kit - ECS - Audi Volkswagen

ECS RA4 Lightweight Flywheel with the Clutch Masters Stage 3 clutch kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
5487
Mfg#:
RA4S3-STEEL
Ships on Aug 11, 2026
Auto Notify
$1354.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Turbosmart Gen-V Race Port BOV - Black

ES#4007248 - TS-0204-1132 - Turbosmart Gen-V Race Port BOV - Black - The Race Port is famous for being an amazingly small and light BOV for turbocharged competition level engines - TurboSmart - Audi Volkswagen

The Race Port is famous for being an amazingly small and light BOV for turbocharged competition level engines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*General use blow off valve for custom big turbo applications - Not a direct fit valve*

Brand:
TurboSmart - Corporate Logo
ES#:
4007248
Mfg#:
TS-0204-1132
In Stock at Vendor
$335.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forged Rifle Drilled H-Beam Connecting Rods

ES#2794960 - IERHVA2RD - Forged Rifle Drilled H-Beam Connecting Rods - Set of 4, rifle drilled - Integrated Engineering - Audi Volkswagen

Set of 4, rifle drilled affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Drop in for engine code AWM only

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794960
Mfg#:
IERHVA2RD
Ships in 4 Business Days
$657.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Polyurethane Rear Differential Mount - Black (Track)

ES#4701581 - ELA-10-285 - Polyurethane Rear Differential Mount - Black (Track) - Eliminate excessive rear differential movement! - Verkline - Audi

Eliminate excessive rear differential movement! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verkline - Corporate Logo
ES#:
4701581
Mfg#:
ELA-10-285
Ships in 2 Business Days
$325.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JHM Solid Short Throw Shifter (Late Style)

ES#4046135 - JHM-STS-B5A4L - JHM Solid Short Throw Shifter (Late Style) - If you desire the ultimate in shifting, the JH Motorsports Solid Short Throw Shifter is the perfect solution! - JH Motorsports - Audi Volkswagen

If you desire the ultimate in shifting, the JH Motorsports Solid Short Throw Shifter is the perfect solution! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with late style shifter (Cars that DO NOT have push-down style reverse)

Brand:
JH Motorsports - Corporate Logo
ES#:
4046135
Mfg#:
JHM-STS-B5A4L
Ships in 2 Business Days
$259.99 USD
Free Shipping
on orders $49 and up
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.

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