Here, you are looking at the Turbosmart BOV Block-Off Cap. This particular cap has been designed to block off the blow-off valve provision on your turbocharger to allow you to add an aftermarket blow-off valve on your intercooler piping.
Works with Borg-Warner EFR, Ecoboost, and KKK turbochargers
Durable billet aluminum construction
Designed to allow for an external BOV
Covers the existing blow-off valve provision on your turbocharger
Includes new O-ring
Billet Blanking plate designed specifically for the Borg Warner EFR, KKK and Ford Focus ST 2.0 EcoBoost Turbocharger. Eliminates the originally fitted diverter valve, required for fitment of external BOV.