GFB WGA 7305 Wastegate Actuator for WRX STI MY99-21 (single scroll turbo only) axela Outside Diameter: 18

Outside Diameter: 18

Being adjustable

Great with E85 or ethanol blend fuel

For 11mm (7/16") injectors use AF889 adapters

GFB WGA 7305 Wastegate Actuator for WRX STI MY99-21 (single scroll turbo only) axela Outside Diameter: 18NOTE: does not fit twin scroll turbos such as those found on special models like Spec C Type RA. The WGA is a high performance bolt on internal wastegate actuator designed to bring boost on sooner and hold it longer! The WGA is all about increasing the area under the boost curve. With a larger diaphragm than the OEM actuator, the WGA has more control authority over the wastegate flap. This makes it harder for exhaust backpressure to blow the wastegate