S&B Filters 76-1006B Chevrolet GMC LLY Diesel Engine Turbo Mouthpiece 78.6% increase in air flow over the stock mouthpiece Powder coated black body and CNC machined edges give your enging a whole new look Compatible with any intake system that utilizes the stock location EMISSIONS LEGALITY: Not legal for use in California or other states adopting California emissions standards.Non Carb Compliant.