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K&N 77-3021KP Air Intake

Intake Kits > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   11 Customer Reviews
  • 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 77-3021KP Air Intake fits some Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, and GMC Sierra 1500 models. See vehicle applications link for details.
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 K&N 77 Series Air Intake Systems]

Product Specifications

Estimated Horsepower Gain8.23 HP @ 5067 RPM
Air Filter ColorRed
Air Filter Height9 in (229 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-29
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Intake Pipe Color / FinishPolished
Intake Pipe MaterialAluminum
Product Box Height12.5 in (318 mm)
Product Box Length18.25 in (464 mm)
Product Box Width18.25 in (464 mm)
Product Style77 Series Kits
Replacement FilterRC-5046
Street Legal In All US StatesYes
TUV Approved (Europe)No
Weight12.8 lb (5.8 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 77-3021KP Air Intake Product Reviews

Thursday, March 23, 2017 - Part 77-3021KP
You guys are awesome.

Ryan Laws
Wasilla, Alaska
Monday, November 21, 2016 - Part 77-3021KP
Easy install, satisfied with the product.

Cathy Stanley
Coopersburg, Pennsylvania
Wednesday, October 5, 2016 - Part 77-3021KP
I've ordered two K&N filter kits online in past two months got both shipped in promptly and installed with no problem. Very satisfied with K&N.

Bob OKC Auto Works
Oklahoma City, Oklahoma
Friday, September 23, 2016 - Part 77-3021KP
Love it! It sounds awesome and helped with air intake.

Troy Pike
Menoken, Minnesota
Tuesday, July 19, 2016 - Part 77-3021KP
I received my intake, took me 30 mins to install. Truck is running way stronger. I'm very happy! Saves me gas and I can pass a car or truck with no problem. Must buy....

Rene Alvarez
Cypress, Texas
Saturday, October 24, 2015 - Part 77-3021KP
Love the product and the shipping was very prompt I would highly recommend to anyone.

Leland Edwards
Salem, Oregon
Tuesday, November 4, 2014 - 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.

Soldotna Alaska