aFe MagnumFORCE Intakes Stage 2 P5R AIS P5R GM Diesel Trucks 01 04 V8 6.6L (td) LB7 Duramax LML plugs directly into the stock Exhaust housing size:0.91 plugs directly into the stock wiring harness connectors and sensors XDP's Billet Thermostat Housing is more than just a dress up part This intake system also features a heat insulating molded plastic tube that replaces the stock intake tract with a built in mass air flow sensor pad that directs increased air flow with improved volumetric efficiency for maximum performance this air intake system features a massive 6" base x 7" height filter with a 4" flange washable reusable conical air filter that improves airflow for increased horsepower and torque