Wehrli 20-24 Chevrolet 6.6L L5P Duramax 3.5in Intake Horn w/PCV Port - Gloss Black

3.5 in. Turbo Intake Horn for the 2020-2024 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 in. Horn when used with a Max Effort Tune. Tuning not required, this horn will work plug and play tuners or OEM calibration.Installation InstructionsThis Part Fits: Year Make Model Submodel 2021-2024 Chevrolet Silverado 2500 HD Custom 2020-2024 Chevrolet Silverado 2500 HD High Country 2020-2024 Chevrolet Silverado 2500 HD LT 2020-2024 Chevrolet Silverado 2500 HD LTZ 2020-2024 Chevrolet Silverado 2500 HD WT 2024 Chevrolet Silverado 2500 HD ZR2 2020-2024 Chevrolet Silverado 3500 HD High Country 2020-2024 Chevrolet Silverado 3500 HD LT 2020-2024 Chevrolet Silverado 3500 HD LTZ 2020-2024 Chevrolet Silverado 3500 HD WT 2020-2024 GMC Sierra 2500 HD AT4 2024 GMC Sierra 2500 HD AT4X 2020-2021 GMC Sierra 2500 HD Base 2020-2024 GMC Sierra 2500 HD Denali 2024 GMC Sierra 2500 HD Denali Ultimate 2022-2024 GMC Sierra 2500 HD Pro 2020-2024 GMC Sierra 2500 HD SLE 2020-2024 GMC Sierra 2500 HD SLT 2020-2024 GMC Sierra 3500 HD AT4 2020-2021 GMC Sierra 3500 HD Base 2020-2024 GMC Sierra 3500 HD Denali 2024 GMC Sierra 3500 HD Denali Ultimate 2022-2024 GMC Sierra 3500 HD Pro 2020-2024 GMC Sierra 3500 HD SLE 2020-2024 GMC Sierra 3500 HD SLT