The K&N 57-1576 is a cold air intake built around a black, rotationally molded HDPE intake tube and an enclosed air box. The air box shields the red oiled cotton gauze filter (replacement RU-2815) from engine bay heat, so the filter draws cooler air than an open setup. The manufacturer lists this kit for the 2018-2023 Jeep Wrangler JL with the 3.6L V6, and it is not listed for the Grand Cherokee. The manufacturer estimates a gain of 12.5 HP at 4630 RPM and 12.2 lb-ft of torque, and guarantees increases in horsepower and torque. Owners on user forums are more skeptical about 3.6L V6 intake gains, though many say the intake sounds better under acceleration. The washable filter is rated for about 100,000 miles of normal highway use between cleanings, which can offset the price against a disposable paper filter.
For a 2018-2023 Wrangler JL 3.6L owner searching for a K&N cold air intake, this kit is street-legal in all 50 states under CARB EO D-269-111. The manufacturer says installation typically takes 60 minutes or less using simple hand tools, including a wrench, extension, flat-blade screwdriver, and Allen wrench. Because the air box and heat shield replace the factory airbox, expect to disconnect the intake tube, the crankcase vent hose, and the mass air sensor connection. The manufacturer's install sheets for its high-flow systems also recommend rechecking alignment, clearance, and clamp tightness periodically. Keywords: K&N 57-1576, Wrangler JL 3.6L cold air intake, JL Pentastar intake, 2018-2023 Jeep Wrangler V6 intake kit, CARB legal cold air intake.
The manufacturer lists the 57-1576 for the Jeep Wrangler JL V6-3.6L F/I from 2018 to 2023. Confirm your vehicle in the manufacturer's fitment lookup before ordering, because this MPN is not listed for the Grand Cherokee.
The manufacturer lists CARB EO number D-269-111 for this kit and states it is legal for use in all 50 states.
The manufacturer states the filter only requires cleaning about every 100,000 miles under normal highway driving conditions.
The manufacturer says a typical installation can be completed in 60 minutes or less with simple hand tools.
Installation is a moderate DIY job that the manufacturer says takes about an hour with basic hand tools: a wrench, extension, flat-blade screwdriver, and Allen wrench. Disconnect the battery before starting, and set the factory intake parts aside in case you need to return to stock. Plan for the mass air sensor and crankcase vent connections to be disconnected and reconnected, and tighten all clamps and brackets fully. Once installed, check the intake for air leaks and confirm the clearance around the heat shield and tube.
