• Wehrli Custom Fab 2017-19 L5P Duramax 3 1/2" Turbo Intake Horn with PCV Reroute



    3 1/2" Turbo Intake Horn for the 2017+ L5P Duramax with factory style Turbo. The OEM plastic intake horn is 2.4" diameter and we experienced a 25HP Gain with our 3.5" Horn when used with a Max Effort Tune. Custom Tuning is required with this horn. Includes PCV Hose and fitting to reroute the PCV to atmosphere. Not compatiable on stock tune trucks, or with plug in style tuners (Banks, Stealth, AFE, etc)