Wehrli 2017-2019 L5P Duramax 3.5" Turbo Intake Horn

-3 1/2" Intake Horn -O-Ring -Mounting studs and nuts -Powder coating -NO Tuning required, bolt on! -Will fit on stock truck no other modifications or upgrades necessary! 3 1/2" Turbo Intake Horn for the 2017-2019 L5P Duramax with factory style Turbo. The OEM plastic intake horn is 2.4" in diameter, and we experienced a 25HP Gain with our 3.5" Horn when used with a Max Effort Tune. Tuning is unnecessary; this horn will work with plug-and-play tuners or OEM calibration. -NO Tuning required; bolt on! -Will fit with OEM or any aftermarket intake kit. -Will fit on stock truck no other modifications or upgrades necessary!