The HKS Super SQV4 Blow Off Valve Kit takes classic and proven blow off valve technology to be a direct replacement of the factory blow off valve in your vehicle. Overtime, your factory blow off valve can become weak and create a boost leak causing your turbocharger to work harder to hit target boost numbers. The internal piston of the HKS SQV4 Blow Off Valve works super fast to relieve boost between shifts, and under deceleration. Everything is included in this kit to be a direct fitment blow off valve. This includes all necessary adapters, clamps, hoses, and fittings to make for a ready installation.