Amber Performance are an Approved Forge Motorsport Reseller & Only sell 100% Genuine Forge Motorsport products. Blow Off Valve for Subaru 2008 WRX. A direct bolt on replacement Blow Off valve for the new 2008 Subaru Impreza WRX with either the 2.0 litre or 2.5 litre engines. Please specify at point of order what colour Valve you require either Black or Polished. Model: Impreza WRX (2008 On Models).Please note: The original diamond shaped mounting bracket mating face o ring seal is to be retained and fitted to the Forge valve. Please note: This valve will not fit the 2008 STi.