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Volkswagen MK4 Performance Engine Parts

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Average gain of 90 horsepower and 150 lb-ft of torque, power results vary depending on your modifications affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Requires VNT-17 based hybrid turbo upgrade, 3.0 bar MAP sensor, VCDS logging, upgraded fuel injectors, and upgraded clutch if not equipped with factory L

Brand:
Tunezilla - Corporate Logo
ES#:
2917827
Mfg#:
VE-TDI-005
Ships in 7 Business Days
$549.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4880731 - 034-145-5001 - Diverter (Bypass) Valve OEM 710N - New OEM "710N" bypass valve with reinforced rubber diaphragm for longer use than other plastic valves. - 034Motorsport - Audi Volkswagen

New OEM "710N" bypass valve with reinforced rubber diaphragm for longer use than other plastic valves. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4880731
Mfg#:
034-145-5001
In Stock
$91.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3647534 - ST-AIVN-1106SKT - Supertech Stainless Intake Valve Kit - +1mm oversized valve head diameter, single groove keeper setup for high RPM use - Includes Supertech valves, single groove keepers and IE valve seals - Assembled By ECS - Audi Volkswagen

+1mm oversized valve head diameter, single groove keeper setup for high RPM use - Includes Supertech valves, single groove keepers and IE valve seals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
*Oversized valves require extra machine work to the cylinder head.*

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647534
Mfg#:
ST-AIVN-1106SKT
Back Ordered
$545.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4070146 - N90767801 - Turbocharger Stud - Priced Each - Secures turbocharger to catalytic converter. M10x35 - Rein - Audi Volkswagen

Secures turbocharger to catalytic converter. M10x35 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4070146
Mfg#:
N90767801
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4505337 - SN0-N1400 - Water/Methanol Nozzle - 14GPH  - Snow Performance Hyper-Sonic water-methanol injection nozzle - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Snow Performance Hyper-Sonic water-methanol injection nozzle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4505337
Mfg#:
SN0-N1400
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3647467 - ST-AIVN-1103S - Supertech Stainless Intake Valve - 1.8T/2.7T - Priced Each  - Stock sized valve head diameter, single groove keeper setup for high RPM use - Supertech - Audi Volkswagen

Stock sized valve head diameter, single groove keeper setup for high RPM use affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*Valves priced individually - For 1.8T - qty 12 needed / For 2.7T - qty 18 needed - Please see long description for additional valve seal/keeper informa

Brand:
Supertech - Corporate Logo
ES#:
3647467
Mfg#:
ST-AIVN-1103S
Back Ordered
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2951973 - ve-tdi-001KT - Stage 1 - With FlashZilla V3 - Average gain of 20 horsepower and 34 lb-ft of torque. For engine code ALH (up to 2003) - Tunezilla - Volkswagen

Average gain of 20 horsepower and 34 lb-ft of torque. For engine code ALH (up to 2003) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles from the 2000 model year only. Vehicles older than 2000 require ECU removal and physical chip swapping and are not OBD2-flashable.

Brand:
Tunezilla - Corporate Logo
ES#:
2951973
Mfg#:
VE-TDI-001KT
Ships in 7 Business Days
$539.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3214561 - FMDV008PA -  008 Premium Diverter Valve - Black - 3 Way adjustable Vacuum Port - Smaller, tougher and tuneable - Now with 3-way adjustable, 90-degree vacuum port - Forge - Audi Volkswagen Porsche

Smaller, tougher and tuneable - Now with 3-way adjustable, 90-degree vacuum port affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
3214561
Mfg#:
FMDV008PA
Back Ordered
$268.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1832520 - FMKT006B - Boost Hose Kit - Blue Hoses - A complete hose kit for your intercooler - Forge - Audi Volkswagen

A complete hose kit for your intercooler affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AWD or AWW engine codes only

Brand:
Forge - Corporate Logo
ES#:
1832520
Mfg#:
FMKT006B
Ships in 7 Business Days
$174.99 USD
Free Shipping
on orders $49 and up
ES#2650154 - PFF85-505 - Performance Polyurethane Dogbone Mount Bushing - Street - A more solid bridge between your chassis and transmission for a better driving experience. - Powerflex - Audi Volkswagen

A more solid bridge between your chassis and transmission for a better driving experience. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
2650154
Mfg#:
PFF85-505
In Stock
$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3647522 - ST-AEVI-1103SKT - Supertech Inconel Exhaust Valve Kit - Stock sized valve head diameter, single groove keeper setup for high RPM use - Includes Supertech valves, single groove keepers and IE valve seals - Assembled By ECS - Audi Volkswagen

Stock sized valve head diameter, single groove keeper setup for high RPM use - Includes Supertech valves, single groove keepers and IE valve seals 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#:
3647522
Mfg#:
ST-AEVI-1103SKT
Back Ordered
$519.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2917784 - DV25 - Diverter Valve - Polished - Keep your turbo boosting like it should - Euro Sport Acc - Audi Volkswagen

Keep your turbo boosting like it should affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Euro Sport Acc - Corporate Logo
ES#:
2917784
Mfg#:
DV25
Ships in 3 Business Days
$129.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3183985 - 253464M-CO - MK4 Jetta 2.5" Aluminized Cat-Back Exhaust - With Magnaflow Muffler - Get that Exhaust tone you've been looking for! - Techtonics Tuning - Volkswagen

Get that Exhaust tone you've been looking for! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles featuring a "cut out" rear valance

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3183985
Mfg#:
253464M-CO
Ships on Jun 29, 2026
$519.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Get that Exhaust tone you've been looking for! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles featuring a "non-cutout" rear valance. Hidden (turn-down) exhaust tip.

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175764
Mfg#:
253464M-H
Ships on Jun 29, 2026
$519.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Get that Exhaust tone you've been looking for! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles featuring a "non-cutout" rear valance. Visible exhaust tip.

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3183984
Mfg#:
253464M-V
Ships on Jun 29, 2026
$519.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4659791 - PFF85-441 - Polyurethane Upper Transmission Mount Insert - Street - Fill the voids in the factory mount to reduce flex - Featuring 70A durometer polyurethane - Powerflex - Audi Volkswagen

Fill the voids in the factory mount to reduce flex - Featuring 70A durometer polyurethane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
4659791
Mfg#:
PFF85-441
In Stock
$36.99 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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