The K&N 77 Series Air Intake Kits combine outstanding performance and under-the-hood style. They come with an oversized, high-flow conical air filter designed to provide increased surface area and dust capacity. This extra surface area provides even more airflow at lower restriction than a standard K&N OE replacement filter that is limited to the size of the factory air-box. 

The oversized air filter also captures more dirt, increasing the service life before each cleaning is required (up to 100,000 miles). Most 77 Series kits include a heat shield designed to seal against your truck's hood to isolate the air intake from engine heat. Cooling the air that travels into the engine can increase horsepower all by itself. K&N metal intake kits use adapters made from high-strength materials that ensure long life, such as silicone and reinforced nylon.

• High-flow conical air filter
• Extra surface area provides even more airflow
• Oversized air filter captures more dirt
• Increases the service life before each cleaning

So if you are looking for more power then this is what you need. So make the right decision and choose K&N.