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