Our ZZPerformance bypass valve block off plate is intended for those who are currently using a turbo that utilizes an internal bypass valve and have converted to an external blow off valve. Example: If you have an LNF with a Z54 turbo with our ZZP LNF intercooler package with the 50mm BOV. 

This plate replaces the entire bypass valve assembly on your Z54, Z57, ZFR 6758, or ZFR 7163 turbocharger. It will block off the bypass valve so you can move to an external blow off valve. When you make the change you will also need to convert to a blow through MAF setup utilizing the MAF in the lower charge pipe. It will also require a PCM update. Block off plate includes stainless hardware. 

If you have any questions about fitment or functionality please email customerservice@zzperformance.com. 

Installation note: We recommend a small amount of dielectric grease be applied to the smaller o-ring to ensure it does not come unseated during installation. 

Fits: ZZP Z54, ZZP Z57, and ZFR 6758/7163. ZFR turbos require the dual drilled bypass valve provision on the compressor cover.