The K&N 63-9030 is a 63 Series AirCharger cold air intake built for the 4.0L V6 in the Toyota FJ Cruiser. It swaps the factory filter and intake tube for a black, roto-molded high-density polyethylene tube, which the manufacturer says increases the volume of air reaching the engine. The tube pairs with a washable, oiled cotton High-Flow filter. The manufacturer states the system is guaranteed to increase horsepower and torque, and it backs the kit with a No-Hassle Lifetime Limited Warranty. That warranty and a reusable filter are what make the price easier to justify over stock intake parts.
The manufacturer lists this kit for 2007 to 2009 Toyota FJ Cruiser models with the 4.0L V6. Its published install guidance puts a typical installation at 60 minutes or less using simple hand tools, so a home mechanic with a basic socket set, wrenches, and a screwdriver can usually finish it in one session. Searches for FJ Cruiser 4.0L V6 cold air intake, 2007-2009 FJ Cruiser AirCharger install, and washable oiled cotton filter FJ Cruiser tend to lead to this part, and the cleaning interval below is the main maintenance task after installation.
The manufacturer lists fitment for 2007 through 2009 Toyota FJ Cruiser models equipped with the 4.0L V6. Confirm your vehicle's year and engine with the manufacturer before ordering, because some listings use shorter year ranges.
The manufacturer says the washable, oiled cotton filter only needs cleaning every 100,000 miles under normal highway driving conditions.
The manufacturer states that a typical installation can be completed in 60 minutes or less with simple hand tools, which makes it a realistic weekend job for a home mechanic.
Per the manufacturer's guidance, this is a straightforward bolt-on job that takes about an hour or less with simple hand tools. Because the kit replaces the factory air filter and intake tube, you will remove the stock intake components first and then fit the new tube and filter in their place. Keep the included hardware organized as you work, and clean the filter only at the manufacturer's recommended interval so the oiled cotton media keeps its performance.