If you're looking to give your Toyota 4Runner or FJ Cruiser a serious boost, the K&N AirCharger 63-9034 air intake system is worth checking out. This isn’t just another aftermarket part; it’s a game changer. Swapping out the factory air filter and intake housing can feel like a daunting task, but once you see what this system does, you'll be glad you made the move.
The design of this intake is all about reducing restrictions. It smooths and straightens the airflow, allowing your engine to suck in a lot more air than the stock setup ever could. And we all know what that means—more air translates to more power and better acceleration across the RPM range. K&N claims you can gain about 12 horsepower at 4600 RPM, which is pretty impressive for a simple upgrade.
One of the standout features is the high-flow air filter, complete with a chrome top that not only looks great but is also washable and reusable. You can go up to 100,000 miles before needing to clean it, depending on your driving conditions. That’s a huge plus for anyone who wants to keep maintenance low.
Installation is straightforward, too. You’ll just need a screwdriver, pliers, a socket set, and a few wrenches. No fancy tools or mechanics required—just a bit of elbow grease and you’ll have it in place in no time. Just a heads up, though: this intake isn’t street legal in California, so keep that in mind if you’re in the Golden State.
Here are some of the key specs:
And if you’re curious about the install process, you can find the instructions here. Plus, if you want to see the dyno results, take a look here.
To wrap it up, if you own a 2010-2021 Toyota 4Runner or a 2010-2014 FJ Cruiser, this K&N AirCharger is a solid investment. It’s not just about the numbers—it’s about the feel of your ride when you hit the gas. You’ll notice the difference, and your engine will thank you for it.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Toyota 4Runner | 2010-2021 | SR5 |
| Toyota 4Runner | 2010-2021 | Limited |
| Toyota 4Runner | 2010-2016, 2021 | Trail |
| Toyota 4Runner | 2015-2021 | TRD Pro |
| Toyota 4Runner | 2017-2018, 2020-2021 | Base |
| Toyota 4Runner | 2017-2021 | TRD Off-Road |
| Toyota 4Runner | 2018-2021 | TRD Off-Road Premium |
| Toyota 4Runner | 2018-2021 | SR5 Premium |
| Toyota 4Runner | 2020-2021 | Venture |
| Toyota 4Runner | 2020-2021 | Nightshade |
| Toyota FJ Cruiser | 2010-2014 | Premium |
| Toyota FJ Cruiser | 2010-2014 | Base |

K&N, formally known as K&N Engineering, Inc., is the world’s leading manufacturer of washable performance air filters and cold air intake systems. K&N manufactures over 12,000 parts for a wide range of makes and models of motorcycles, cars, SUV, trucks, industrial applications, and more. K&N was founded in 1969 and is headquartered in Riverside, California in a complex of 10 buildings compromising approximately 400,000 square feet. K&N also operates facilities in China, England, and the Netherlands.
In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N) developed a revolutionary idea for an air filter—one that could perform under the demands of dusty, dirty off-road environments. After experimenting with different types of filter media, they discovered that an oiled cotton design allowed the filter to capture contaminants efficiently, and also be washed and reused. It was right then and there that the original K&N High-Flow Air Filter was born. Fifty years later, K&N is still dominating the industry with leading filtration technology and innovative products that offer extraordinary protection for virtually every application out there.
What Makes K&N the Best?All K&N products undergo rigorous testing to make sure they adhere to and exceed demanding quality standards. These tests include power, torque, and airflow tests to confirm that the intake products are maximizing power boost while retaining engine safety. The company stands behind its product 100 percent with some of the most extensive warranties in the business – a Million Mile Limited warranty. K&N’s performance air intake systems are designed to improve airflow to the engine by replacing the restrictive factory system with a single aerodynamic tube and highly efficient filter media. The systems are available in two materials. The first is Polyethylene, which is used to produce 57 and 63 series intake systems. The second one is aluminum, which can be found on the 69 and 77 series intake systems.
Advantages of K&N IntakesThe benefits of adding a K&N intake system to your car are plenty. Firstly, it will increase your vehicle’s horsepower and torque, while also improving fuel economy and the appearance of your engine bay. What’s more, it will deliver a satisfying, more aggressive exhaust note at higher RPMs. Each K&N intake includes an oversized filtering unit, which can go up to 100,000 miles between cleanings, unlike paper filters that can become clogged easily and cannot be washed or reused. In other words, with K&N products, you will never have to replace your air filter again.
Why Install an Aftermarket Intake?Internal combustion engines all work as large air pumps. Air goes in, fuel is added, combustion occurs, and air goes out. This means there are two ways of increasing power: getting more air into the engine or making it easier for air to get out of the engine. Your air intake is responsible for filtering air before it enters your engine. Dirty air can damage the engine cylinder walls, so a high-quality filter is a must-have item. With a K&N system or filter, you increase airflow through the filter, which means more air is pulled into the engine. K&N does this without reducing filtration qualities, so your engine will live a long life.
Purchase K&N Intakes at Vivid RacingVivid Racing carries an extensive inventory of K&N products ranging from air filters, oil filters, air injection systems, fuel filters and pumps, sensors, carburetors, cold air intakes, and much, much more! If you cannot find a particular item above, please call us at (480) 966-3040 and we will help you find it. We are also here to answer any product questions, regarding usage, benefits, and fitment. Don’t delay! Improve your vehicle’s performance today with K&N Intakes.
K&N Oil Filters | K&N Replacement Filters | K&N 57 Series Intakes | K&N 69 Series Typhoon Intakes
K&N 77 Series Intakes