3 1/2" Turbo Intake Horn for the 2017-2019 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. Tuning not required, this horn will work plug and play tuners or OEM calibration.
- INCLUDES provision for the OEM PCV Line connection.
- 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!