Nitrous Outlet 4150 Stinger Nitrous Plate - For 4150 Carb - 10lb Bottle 50-400hp Fits 4150 Style Carbs - 50-400hp Jetting Included! 10 Lb Bottle Included Solenoids and Plate flow up to 500HP! Nitrous Oxide System, Carb Plate, 50-400hp