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The WCFab 4" High Flow Turbo Intake Horn for 2017–2025 Chevrolet Silverado and GMC 2500/3500 HD trucks with the 6.6L Duramax (L5P) replaces the stock plastic inlet with a durable cast-aluminum unit. Its smooth transition and anti-surge face improve compressor engagement while a billet PCV port and O-ring seal enhance fitment and function. Offered in gloss black powder coat, it bolts on and increases inlet flow for better throttle response.
Wehrli 17-24 Duramax L5P High Flow Intake Horn - Gloss Black
