11-16 Duramax LML HSP 3.5" High Flow Mouthpiece Fuel and a more efficient/powerful torque

and a more efficient/powerful torque curve

It features a high quality black powder-coat finish and mounts securely using OEM mounting locations

With our unmistakable styling

This transmission pan is a bolt-on replacement and will hold 5

7 offers superior surge protection and performance

11-16 Duramax LML HSP 3.5" High Flow Mouthpiece Fuel and a more efficient/powerful torque2 4 Week Build Time Normally Not designed to work with a factory intake, it will only fit a 4. 5" HSP intake or an aftermarket 4" intake. New HSP Diesel 3. 5" High Flow Turbo Horn Mouthpiece for 11 16 LML Duramax, With this Turbo Mouthpiece you will notice much more Turbo whistle compared to any plastic mouthpiece. Your choice of powder coating. This high flow design deletes the resonator and reroutes the PCV, without the resonator and PCV holes in