to control the valve irrespective of manifold pressure and shaft seal allows for leak proof operation

Inlet O-ring

Also suits the discontinued 6 bolt WG38/45

but it also guards against potentially damaging compressor surge - and will do so for a long time

anti-glare shield

Clutch Kit - Xtreme Performance Heavy Duty Sprung Ceramic Incl Flywheel KTY24506-1BA JR7 to control the valve irrespectiveXtreme Performance sprung ceramic kit 1B Recommended for: Motorsport ApplicationsThese kits are available with sprung ceramic friction discs and are designed for motorsport applications where higher heat and torque capacity is required. These can also be used in some road applications. Specifications: Torque capacity Nm Clamp load Increased over standard Sprung Ceramic Friction Disc Heavy Duty Pressure Plate Kit contains everything you need for a