K&N Cold Air Intake Kit: High Performance, Increase Horsepower: Compatible with 2011 2014 Chevy/GMC Heavy Duty (Silverado 2500/3500 HD, Sierra 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: Made in America PERF. INTAKE KIT; CHEVROLET/GMC/ SILVERADO/SIERRA, 6.6L 11-13