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K&N 77-3021KP 5.0 out of 5 stars 4 Customer Reviews
Intake Kits > Performance Intake Kit

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The K&N 77-3021KP high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some GMC Sierra 1500 and Chevrolet Silverado 1500 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 77-3021KP air intake comes with a chrome 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. The oversized cone 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 an Allen wrench. 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.

[More Information on 77 Series Air Intake Systems]
  • 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

Product Specifications 
Estimated Horsepower Gain:8.23 HP @ 5067 RPM
Air Filter Color:Red
Air Filter Height:9 in (229 mm)
Air Filter Large End Diameter:7.5 in (191 mm)
Air Filter Material:Cotton Gauze
Air Filter Outlet Shape:Round
Clamp Material:Stainless Steel
Clamp Style:Regular
Clamps Included:5
Couplers Included:2
Intake Pipe Color / Finish:Polished
Intake Pipe Ports:All intake tube ports needed for the specified applications are included
Mass Air Flow Sensor Adapter Included:Mass Air Flow Sensor Adapter Included When Required
Part Number:77-3021KP
Product Box Height:12.5 in (318 mm)
Product Box Length:18.25 in (464 mm)
Product Box Width:18.25 in (464 mm)
Product Style:77 Series Kits
Replacement Filter:RC-5046
Street Legal In All US States:Yes
TUV Approved (Europe):No
Vacuum Tubing Included:No
Weight:12.8 lb (5.8 kg)

Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Product Reviews      Review part 77-3021KP

 04 Silverado 5.3L Awesome product, and well worth the extra $ over the other one. You want to tow a heavy load? Get K&N. Looks awesome under the hood with the chrome pipe. Very impressed the power increase, and makes a nice deep powerful sound from engine. Easy installation.
Jake, Soldotna Alaska
 Love it, very good system. Noticeable power and fuel economy increase. Makes my straight pipes sound even better!!!!
Winter Gontjes, Duluth, Minnesota
 Very easy to install! Just watched one YouTube video from K&N and the rest is history. I absolutely love it!
Andy, Amarillo, Texas
 Excellent instructions and easy to install. Very satisfied.
Randy Mullendore, St. Louis, Missouri
 I installed the K&N cold air intake in early 2013 on my 2001 Silverado 5.3L. I only drive it about 1500 miles a year. My wife was driving it 65 miles a day for a week and noticed a horse power difference and a noticable fuel milage increase. I told her that the K&N install was a great investment. It was easy to install and a true increase of power.
Ron , Pruitt, Ohio