Unlock and boost both horsepower and torque quickly and easily to your Jeep, Ford or Chevrolet truck, SUV or crossover with the K&N 77 Series High Performance Air Intake System. The K&N 77 Series features bolt-on installation with common hand tools and allows your engine to breathe easier by incorporating K&N’s exclusive high-flow filter gauze material. The material is not only chock full of performance benefits, but is also durable and requires minimal servicing vs. full-on replacement like other OEM filter replacements, saving you money over the life of your vehicle. K&N’s popular 77 Series metal cold air intake systems for trucks and SUV’s combine outstanding performance and sharp under-the-hood styling. The metallic finishes found on the mandrel-bent piping are not only eye-catching, but are designed to maximize airflow. K&N’s chrome-like finish part numbers end in "KP" while the more understated Grey finish kits end in "KG"—perfect for the sleeper look. Often times, restriction can exist between an air filter and the engine in the form of less-than-optimal bends and/or smaller diameter ducting. This is one of the weakest links in the airflow “chain”, which robs a vehicle of its natural horsepower. More often than not, that weak point is the factory air path leading to the engine serves as a bottleneck for performance. K&N 77-Series High Performance Air Intake Systems virtually eliminates air path restriction by replacing the air filter with a high-performance unit thereby creating less airflow resistance to the engine. The aluminum tube is properly engineered and effectively drives a cleaner flow of air into the engine, which translates into more horsepower, torque and fuel economy. Though mass-produced to keep up with white-hot demand, K&N 77 Series kits have the look and feel of custom-made units. They come with an oversized high-flow conical air filter designed to provide increased surface area and dust filtration. The extra surface area helps to provide even more airflow at lower restriction than a standard O/E replacement filter that is limited to the size of the factory air box. The oversize air filter also captures more dirt increasing the service life before each cleaning is required (up to 100,000 miles). Most 77 Series Kits include a heat shield designed to seal against a vehicle’s hood to isolate the air intake from engine heat. Cooling the air that travels into the engine can increase horsepower all by itself. All our metal intake kits use adapters made from high strength materials such as silicon and reinforced nylon and ensures long life. These kits come standard with powder coated steel brackets. Some 77 Series Air Intakes are not legal for use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the catalog or website vehicle parts search for specific CARB status. Check out our complete inventory of Performance Air Intakes and if you’d like to shop for other Intake Kits, Air Filters and Throttle Body Spacers, remember that 4WheelParts has you covered. Official K&N 77-Series Intake Dyno Test:
This product really wakes up the 2500HD. It improves throttle response dramatically.
3.0k&n 77 intake for a 2018 jeep jk wrangler sport
The instructions that came with the intake were pretty clear, and the breakdown drawing was also very helpful. Ok, I had to give this only 3 stars because assemblying the heat box was a total bear, 2 of the 4 screws for the lid would not line up. I finally got all of them installed. Good thing the mileage warranty is such I won't be taking the lid off anytime soon.
5.0Great start but don’t stop there!
Quickly noticed more pep in acceleration. Added performance axle back exhaust and retuned the ECM, and it make a huge difference in acceleration and my Jeep sounds great without being obnoxious. Plus, the cold air intake looks great when I lift the hood!
Thank you for asking. The 77 series is aluminum tube with chrome like finish and the 57 series is a High Density Polyethylene Tube. It comes down to preference and what you like. The 57 series does give you about 2 more horsepower than the 77 series
I have a 2009 Nissan Pathfinder SE 4.0 V6. Is this part 50 State Legal? Or at least legal in New Hampshire?
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Thanks for the inquiry Big Cat, the K&N Filter 77 Series High Flow Intake System part #K/N77-6014-1KP is not for legal use in California and other states adopting Ca emissions standards.
I have a 2011 Jeep Wrangler 4 Door Sahara, with a dual exhaust. I am looking to improve the preformance and gas millage would this be best?
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Thanks for the inquiry. The K&N 77 Series High Flow Intake system would be a great compliment to your 2011 Jeep Wrangler Sahara Unlimited with dual exhaust. You can expect horsepower, torque and economy gains.
Dezertnut according to K/N the K/N 77-2561 is california legal and includes a carb approved sticker in the kit to apply to your truck for smog testing time. as always save your factory set up because many times the smog people have no clue as to what they are doing.
Riverside, California is home to K&N Engineering, and since creating the reusable high flow cotton air filter nearly 50 years ago, K&N has grown into a world-renowned manufacturer of performance air filters and air intake systems. Jeep owners know they can count on K&N's proven products to stir the hidden beast in engines and keep them filtered and protected. We carry air cleaner assemblies, air intake kits and air filters along with accessories like cleaners and filter wraps. Say hello to gains in fuel economy and horsepower with air intake kits and welcome increased airflow and enhanced styling with K&N's air cleaner assemblies. Shop K&N Filter Now