Creates an unmistakable sound! Features and Benefits: Reduces intake air temperature by venting hot air to atmosphere instead of back into the compressor inlet, Quickens turbo response by reducing the pressure on the compressor wheel during drop throttle, Creates unmistakable sound, Military spec hard anodized spacer plate with engraved Banks logo, Stainless steel hardware, Profile-matched precut gasket, Designed to work with Banks Sidewinder Turbo System. The Banks Blow-Off Valve Spacer is a cool and functional addition to the Sidewinder Turbo System.Spacer Kit, Blow Off Valve for use with Jeep 4.0LReduces intake air temperatureVents hot air to atmosphereQuickens turbo responseReduces pressure on compressor wheel during drop throttleCreates unmistakable soundMilitary spec hard anodized spacer plateProfile-matched precut gasketEmissions Compliant: Race Only