The K&N 50-1566 is a NextGen cold air intake for the 3.6L V6 in 2012–2018 Jeep Wrangler JK models. The manufacturer's listing describes a semi-enclosed NextGen airbox that lowers intake air temperatures, a large-diameter intake tube, and a washable, reusable oiled cotton filter in place of the factory setup. Owners looking for a Pentastar cold air intake for a JK or a K&N 50-1566 install often compare it with cheaper open-element kits. The factor that justifies the price is the enclosed airbox, which is designed to keep hot engine-bay air away from the filter. The manufacturer also says the filter can go a long time between cleanings, so the reusable element avoids recurring replacement cost.
Installation is a practical weekend job. The manufacturer states that a typical install takes around an hour. The procedure involves removing the factory air box and intake tube, relocating the inlet air temperature sensor into the new tube, mounting the heat shield brackets and tie wraps, and fitting the crankcase vent hose. Per the manufacturer's install sheets for this JK intake family, keep the factory intake rather than discarding it, and use only the supplied hardware, because skipping steps can damage the tube, throttle body, or engine. Basic hand tools and a wrench for the vent fitting should be enough.
The manufacturer recommends that customers not discard the factory air intake, so it can be kept in case it is needed later.
The manufacturer's listings for this JK 3.6L intake state that it will not void the vehicle warranty. The manufacturer's install sheets add that failing to follow the instructions or proper maintenance may void warranty, so the install should be done exactly as documented.
The manufacturer's install guidance for this JK intake family calls for cleaning the filter every 100,000 miles. The filter is washable and reusable, so it does not need to be replaced.
Begin by lifting the intake tube, disconnecting the inlet air temperature connector, and removing the tube and the air filter housing. Move the inlet air temperature sensor into the K&N tube, install the rubber-mounted studs and brackets onto the heat shield, and attach the vent fitting. The manufacturer's sheets say to tighten the vent fitting hand-tight and then add two full turns with a wrench. Secure all hose connections with the supplied clamps, then check for air leaks or odd noises. Confirm that every bracket and clamp is seated before starting the engine.
