Material: Sturdy Aluminum alloy. Filter: Dry, non-oil.Easy to clean and reusable. More sensitive throttle response and higher burst horsepower output. Heat shield protects the filter from dust and debris and prevents hot air from the engine from entering the intake. Inhale more cold air to prevent engine overheating and increase car horsepower. It can increase horsepower by 8% to 10% and torque by 6% to 8%. Fit 1999-2006 Chevy GMC Silverado Sierra with 4.8L 5.3L 6.0L V8 Engine.