Material: 6063-T6 aluminum alloy color: black and blue high quality aluminum alloy, with excellent machining performance, excellent welding characteristics and electroplating properties, good corrosion resistance, high toughness and no deformation after processing, dense material without defects and easy polishing, easy color film, excellent oxidation effect and other excellent characteristics. High strength and durability. This boost solenoid valve USES a fully adjustable actuator arm and lock nut for precise boost setting. The bolt position is accurate and does not require adjustment of the turbocharger for easy installation. Heavier springs allow the exhaust valve to hold longer, thus increasing power, mid-range acceleration torque and preventing exhaust gate movement. Increase the boost output of the turbocharging system.