This is the CTS Turbo VR6 SAI injection blockoff plug designed for use in MK3 VR6’s. This billet piece is constructed from T6061 aluminium and comes standard with machined finish. These pieces are commonly used when replacement for the factory PCV system with upgraded components or catch can kits. This is SAI plug is designed for off road use only and should be used in conjunction with specific software to remove potential check engine lights.nnProduct Details:nnViton O-ringnT6061 Alum constructionnCNC machined finishnFits all MK3 VR6 motors