This wastegate actuator, with a 0.5 bar opening pressure, is designed for VAG 1.8T 20VT engines with a K03 or K04-001 turbocharger. The actuator regulates the boost pressure by opening the wastegate valve when the set pressure is reached. This ensures stable boost control and reliable turbocharger operation.

Advantages

• Wastegate actuator with 0.5 bar opening pressure
• Suitable for K03 and K04-001 turbochargers
• Stable boost control
• Reliable operation under higher loads
• Direct replacement of the original actuator

Technical specifications

• Type: wastegate actuator
• Opening pressure: 0.5 bar
• Maximum turbo pressure: approximately 1.4 bar
• Turbo compatibility: K03 / K04-001
• Mounting: bolt-on replacement

Compatibility

Volkswagen
• Volkswagen Golf 4 1.8 Turbo
• Volkswagen Bora 1.8 Turbo (1999–2008)
• Volkswagen Polo 9N3 1.8 Turbo

Audi
• Audi A3 8L 1.8 Turbo
• Audi TT 8N 1.8 Turbo

Seat
• Seat Ibiza 6K2 1.8 Turbo
• Seat Ibiza 6L 1.8 Turbo
• Seat Leon 1M 1.8 Turbo

NB

• Not suitable for K04 engine codes BAM and APY

Contents

• Wastegate actuator 0.5 bar

Frequently Asked Questions

What does a 0.5 bar actuator mean?
The actuator starts to open the wastegate at approximately 0.5 bar of turbo pressure.

Is this a direct replacement for the OEM actuator?
Yes, the actuator can be mounted directly to compatible K03 and K04-001 turbos.

Up to what turbo pressure is this actuator suitable?
Approximately up to 1.4 bar, depending on configuration and tuning.