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Volkswagen MK4 Performance Engine Parts

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10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Black

ES#4846418 - CMBVLRPSH01BK - 10-100 PSI Billet Adjustable Fuel Management Unit (FMU) - Black - Allows perfect fixation of the fuel pressure regulator in the desired location. - SPA Performance - Audi Volkswagen

Allows perfect fixation of the fuel pressure regulator in the desired location.

Brand:
SPA Performance - Corporate Logo
ES#:
4846418
Mfg#:
CMBVLRPSH01BK
Ships in 3 Business Days
ON SALE!
$94.99

This product was last offered at the strikethrough price on
10-01-2026

$89.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Boost Hose Kit - Red

ES#3130080 - fmkt005rKT - Boost Hose Kit - Red - A complete hose kit for your intercooler - Forge - Audi Volkswagen

A complete hose kit for your intercooler For vehicles with AWP engine code only

Brand:
Forge - Corporate Logo
ES#:
3130080
Mfg#:
FMKT005RKT
Back Ordered
ON SALE! SAVE 10%
$199.99

This product was last offered at the strikethrough price on
09-18-2026

$179.91 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SuperTech Valve Spring - Exhaust - Priced Each

ES#2102472 - SPR-H1002D-AU - SuperTech Valve Spring - Exhaust - Priced Each - Super Clean Chrome silicon Vanadium Steel alloy for the highest performance and durability at high rpm's. - Supertech - Audi Volkswagen

Super Clean Chrome silicon Vanadium Steel alloy for the highest performance and durability at high rpm's.

Brand:
Supertech - Corporate Logo
ES#:
2102472
Mfg#:
SPR-H1002D-AU
Ships in 8 Business Days
$14.99 USD
Free Shipping
on orders $49 and up

Anti-Theft Service

ES#2063652 - APRTHEFT-SRV - Anti-Theft Service - *Sale applies only to ECU with 3 or 4 program purchase. - APR - Audi Volkswagen

*Sale applies only to ECU with 3 or 4 program purchase. Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
2063652
Mfg#:
APRTHEFT-SRV
In Stock
ON SALE! SAVE 10%
$199.00

This product was last offered at the strikethrough price on
09-28-2026

$179.10 USD
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger Installation Kit

ES#4715012 - JTC11262 - Turbocharger Installation Kit - All the necessary hardware to install a K04 or K03 Sport turbo - Ajusa - Audi Volkswagen

All the necessary hardware to install a K04 or K03 Sport turbo

Brand:
Ajusa - Corporate Logo
ES#:
4715012
Mfg#:
JTC11262
Ships in 2 Business Days
$88.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Guide - Priced Each

ES#2794454 - IEVTVA1 - Valve Guide - Priced Each - Upgrade to new bronze alloy valve guides - Integrated Engineering - Audi Volkswagen

Upgrade to new bronze alloy valve guides

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794454
Mfg#:
IEVTVA1
Back Ordered
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forge Boost Hose Kit - Blue

A complete hose kit for your intercooler For vehicles with AWD or AWW engine codes only

Brand:
Forge - Corporate Logo
ES#:
261186
Mfg#:
FMKT006-BLUE
In Stock
ON SALE! SAVE 10%
$189.00

This product was last offered at the strikethrough price on
09-18-2026

$170.10 USD
Free Shipping
on orders $49 and up

Forge Motorsport Valve Service Kit

ES#4781648 - FMDv004S - Forge Motorsport Valve Service Kit - Service kit for FMDv004 - Forge - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Service kit for FMDv004

Brand:
Forge - Corporate Logo
ES#:
4781648
Mfg#:
FMDV004S
Back Ordered
ON SALE! SAVE 12%
$23.99

This product was last offered at the strikethrough price on
09-18-2026

$21.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Downpipe Gasket

ES#307579 - 1J0253115R - Downpipe Gasket - Should be replaced every time the downpipe is removed to prevent exhaust leaks - Genuine Volkswagen Audi - Audi Volkswagen

Should be replaced every time the downpipe is removed to prevent exhaust leaks

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307579
Mfg#:
1J0253115R
Ships in 1 day
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$30.99

This product was last offered at the strikethrough price on
10-01-2026

$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hobb

ES#3520735 - ACC-HOBBS - Hobb - 15 PSI - Fuel-It! - Audi BMW Volkswagen MINI Porsche

15 PSI

Brand:
Fuel-It! - Corporate Logo
ES#:
3520735
Mfg#:
ACC-HOBBS
Ships on Oct 19, 2026
$55.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

008 Premium Diverter Valve - Matte Silver

ES#2847752 - FMDV008MS - 008 Premium Diverter Valve - Matte Silver - Smaller, tougher and tuneable - Forge - Audi Volkswagen Porsche

Smaller, tougher and tuneable

Brand:
Forge - Corporate Logo
ES#:
2847752
Mfg#:
FMDV008MS
Back Ordered
ON SALE! SAVE 10%
$180.00

This product was last offered at the strikethrough price on
09-18-2026

$162.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forge Supersize Recirculating Valve

ES#1832441 - FMDVSUPRC - Forge Supersize Recirculating Valve - Designed to offer extreme flow rates for highly modified turbocharger setups - Forge - Volkswagen

Designed to offer extreme flow rates for highly modified turbocharger setups

Brand:
Forge - Corporate Logo
ES#:
1832441
Mfg#:
FMDVSUPRC
Back Ordered
ON SALE! SAVE 10%
$180.00

This product was last offered at the strikethrough price on
09-18-2026

$162.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forge Boost Hose Kit - Blue

ES#261189 - FMKT005-BLUE - Forge Boost Hose Kit - Blue - A complete hose kit for your intercooler - Forge - Audi Volkswagen

A complete hose kit for your intercooler For vehicles with AWP engine code only

Brand:
Forge - Corporate Logo
ES#:
261189
Mfg#:
FMKT005-BLUE
Ships on Oct 22, 2026
ON SALE! SAVE 10%
$179.99

This product was last offered at the strikethrough price on
09-18-2026

$161.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

APR Transverse K04 Software Upgrade For Existing Customer

ES#2063666 - APRKO4TRV-SWUSRV - APR Transverse K04 Software Upgrade For Existing Customer - For customers that already have APR software on their car and are upgrading to a K04 - APR - Audi Volkswagen

For customers that already have APR software on their car and are upgrading to a K04 Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
2063666
Mfg#:
APRKO4TRV-SWUSRV
In Stock
ON SALE! SAVE 51%
$325.99

This product was last offered at the strikethrough price on
09-28-2026

$159.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Blow Off Valve - Atmospheric

ES#1832445 - FMDVWO34C - Blow Off Valve - Atmospheric - 34mm weld on dual piston atmospheric blow off valve for custom installs - Forge - Audi Volkswagen

34mm weld on dual piston atmospheric blow off valve for custom installs

Brand:
Forge - Corporate Logo
ES#:
1832445
Mfg#:
FMDVWO34C
Back Ordered
ON SALE! SAVE 27%
$216.99

This product was last offered at the strikethrough price on
09-18-2026

$157.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine Parts

Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.

Let us help you find the parts that fit your Volkswagen

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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