Wehrli 17-19 Chevrolet 6.6L L5P Duramax 3.5in Intake Horn w/PCV Port - Gloss Black

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 with plug and play tuners or OEM calibration.This Part Fits: Year Make Model Submodel 2017-2019 Chevrolet Silverado 2500 HD High Country 2017-2019 Chevrolet Silverado 2500 HD LT 2017-2019 Chevrolet Silverado 2500 HD LTZ 2017-2019 Chevrolet Silverado 2500 HD WT 2017-2019 Chevrolet Silverado 3500 HD High Country 2017-2019 Chevrolet Silverado 3500 HD LT 2017-2019 Chevrolet Silverado 3500 HD LTZ 2017-2019 Chevrolet Silverado 3500 HD WT 2017-2019 GMC Sierra 2500 HD Base 2017-2019 GMC Sierra 2500 HD Denali 2017-2019 GMC Sierra 2500 HD SLE 2017-2019 GMC Sierra 2500 HD SLT 2017-2019 GMC Sierra 3500 HD Base 2017-2019 GMC Sierra 3500 HD Denali 2017-2019 GMC Sierra 3500 HD SLE 2017-2019 GMC Sierra 3500 HD SLT