Turbo Actuator Electronic RHV4 Turbocharger Wastegate 8981320692 8982356281 For Holden For Colorado 3.0L. Material: This turbocharger actuator is made of metal, making it rust-resistant, wear-resistant, and long-lasting. It offers stable performance and high reliability. Function: The main function of the turbocharger actuator is to precisely control boost pressure by adjusting exhaust or intake airflow, protecting the turbocharger system and optimizing engine performance. Ensuring complete fuel combustion improves engine efficiency. This increases engine power and torque, resulting in a more powerful vehicle. We manufacture our products in strict accordance with quality control standards, and each product undergoes multiple inspections and tests before shipment.