K&N 77 Series Intake – 2004-2005 Silverado and Sierra Duramax (6.6L LLY with Panel Filter) – 77-3047KP

Product Overview� Guaranteed to increase horsepower Designed to improve throttle response and engine sound Free-flowing aluminum tube Replaces entire factory air intake system Lasts up to 100,000 miles before service is required (depending on driving conditions) Easy to install, usually in 90 minutes or less Washable and reusable lifetime air filter K&N Million Mile Limited Warranty The K&N 77-3047KP Air Intake fits some Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 models. See vehicle applications link for details. The K&N 77-3047KP high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some GMC Sierra 2500HD/3500 and Chevrolet Silverado 2500 HD/35000 models. The restrictive factory air filter and air intake housing on your vehicle are replaced by this K&N air intake system which is designed to dramatically reduce air flow restriction as it smoothes and straightens air flow. The improved air flow allows your engine to inhale a larger amount of air than it would from the stock air intake. More air means more usable power and acceleration throughout your engine�s RPM range. The 77-3047KP air intake comes with a black rubber topped K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through the intake tube into the engine�s throttle body for a guaranteed power gain. The intake tube has an attractive chrome-like finish that’s made to last and it accommodates the factory mass air sensor and the air filter accommodates the filter restriction gauge. The oversized tapered cylinder shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points. The tools needed are a screwdriver, ratchet set and several wrenches. Some K&N 77 series air intakes are not legal for sale or use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the K&N catalog or website for vehicle applications and specific CARB status for each vehicle and air intake. � Product Specifications� � Estimated Horsepower Gain 18.74 HP @ 5267 RPM Replacement Filter RC-5173 Air Filter Color Red Air Filter Material Cotton Gauze Air Filter Outlet Shape Round Clamps Included 5 Clamp Material Stainless Steel Clamp Style Regular Couplers Included 2 Product Style 77 Series Kits Air Filter Height 6 in (152 mm) Intake Pipe Color / Finish Polished Intake Pipe Material Aluminum CARB EO Number D-269-48 Street Legal In All US States Yes TUV Approved (Europe) No Weight 12.7 lb (5.8 kg) Product Box Height 10.5 in (267 mm) Product Box Length 35.5 in (902 mm) Product Box Width 13.25 in (337 mm) Mounting Hardware Included Yes Horsepower gains based on similar vehicle dynamometer test. Results will vary. � �