The BD L5P intake horn replaces the plastic factory turbo inlet pipe. The pipe is manufactured from 3-1/2" 409 series stainless tubing and features black powder coating for extra protection. The BD intake horn is a drop-in an upgrade component that compliments the L5P Screamer Turbo and other aftermarket upgraded turbos for the L5P! Not recommend for use on OE turbochargers unless custom tuning is accompanied.. The BD L5P intake horn replaces the plastic factory turbo inlet pipe. The pipe is manufactured from 3-1/2 in. 409 series stainless tubing and features black powder coating for extra protection. The BD intake horn is a drop-in component that compliments the L5P Screamer Turbo!. BD Diesel 17-22 Chevy/GMC 2500/3500 Duramax 6.6L Turbo Intake Horn. BD Turbo Intake Horn Chevy/GMC 6.6L DURAMAX 2500/3500 2017-2022. Turbo Intake Horn; 409 Stainless Steel; Black Powder Coat;. Black powder coated stainless steel construction. TURBO INTAKE HORN CHEV/GM 6.6L 2017-2022. Engine Air Intake Deceleration Elbow. TURBO INTAKE HORN. Air Intake Elbow. Tig Welded

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