The K&N 50-1576 is a NextGen cold air intake for the 3.6L V6 in Jeep Wrangler JL and Gladiator trucks, meant to replace the factory airbox and intake tube as one assembly. K&N says NextGen intakes are designed to deliver the most horsepower on a stock tune for today's most popular trucks, Jeeps, and SUVs. The layout is an all-new hybrid open-top design features an enlarged factory fresh air inlet, optimizing airflow and lowering inlet temperatures. For JL and Gladiator owners searching for a 3.6 Pentastar cold air intake with no tune, this is the system K&N positions for that job.
The case against stock and cheaper filter swaps rests on airflow, inlet temperature, and reusability. K&N reports average gains of 21 HP, 23 lb.-ft. of torque across the NextGen lineup, but that is a lineup average and not a confirmed figure for this SKU, so verify gains before budgeting around them. Enthusiasts on user forums are more cautious, with some reporting minimal to no noticeable horsepower gains from Wrangler intakes and more value in sound and throttle feel. The filter is a washable, reusable High-Flow LIFETIME Air Filter featuring oiled cotton filter media, which avoids repeated disposable-element purchases over the life of the truck.
The manufacturer states that check the CARB status on your parts at knfilters.com. Some K&N Gladiator intakes are listed as not legal for use in California, so confirm the status for part 50-1576 before purchase.
The manufacturer says all NextGen Air Intake Systems are dyno-tested to deliver the most horsepower on your factory tune. Owners on user forums report that results on the 3.6 vary, and many say a tune is what makes the difference in real-world power.
Yes. The manufacturer describes NextGen intakes as paired with a washable, reusable oiled cotton filter, so the element is cleaned and re-oiled rather than replaced on a fixed schedule.
K&N's general guidance for its intakes says installation can typically be completed in 60 minutes or less, and requires only simple hand tools, including a ratchet, extension, 10mm and 14mm sockets, and screwdrivers. Start by turning off the ignition and disconnecting the negative battery cable, then disconnect the mass air flow sensor electrical connection and the EVAP vent line and/or crank case vent line. Next, loosen the hose clamps that secure the intake tube to the throttle body and air filter housing, and release the clips that secure the upper air filter housing. Confirm each step against the install sheet for part 50-1576 before you begin, since the general guide is not specific to this SKU.
