K&N Cold Air Intake Kit: High Performance, Guaranteed to Increase Horsepower: 2011-2014 Chevy/GMC Heavy Duty (Silverado 2500/3500 HD, Sierra 2500/3500 HD) 6.6L V8 Diesel, 77-3077KP

K&N Cold Air Intake Kit: High Performance, Guaranteed to Increase Horsepower: 2011-2014 Chevy/GMC Heavy Duty (Silverado 2500/3500 HD, Sierra 2500/3500 HD) 6.6L V8 Diesel, 77-3077KP

• Ultimate Longevity: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle.
• Guaranteed Increase in Horsepower: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
• Better Towing: Improves acceleration and uphill performance when towing by improving throttle response.
• Improved Engine Sound: Hear the power under the hood.
• World Class Protection: Pushing the limits of engine protection by protecting your engine from harmful contaminants
• Easy Maintenance: No filter cleaning required for up to 100,000 miles
• Easy to Install: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.
• Dyno Tested: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
• High Quality