38MM EXTERNAL WASTEGATEExternal 38mm Wastegate Stainless steel is used for valve and valve housing with a high temperature actuator diaphragm. Actuator spring gives consistent pressure at high temperatures, resists "Relaxing" at high temperatures. CNC machined 10mm thick weld flanges. Colour anodized aluminium actuator housing. External wastegate is commonly used for regulating boost levels more precisely than internal wastegate in high power applications. Wastegate vents