The K&N 77-2576KTK is a 77 Series high-flow performance intake that replaces the factory air filter, airbox, and intake tube with a mandrel bent aluminum tube. It pairs that tube with a washable, reusable High-Flow Air Filter featuring oiled cotton filter media, and a custom heat shield or air box helps protect intake air from the high temperature of your engine bay. Buyers should confirm fitment first: the manufacturer's catalog lists this part number for the Ford Flex V6-3.5L, and its install sheet covers 2013 to 2016 Taurus and Flex. K&N's Explorer 3.5L intake is a separate part number, so check your VIN with K&N before ordering. The case for this kit over stock is airflow and filter life. K&N states the system is guaranteed to boost horsepower, torque and acceleration, and the oversized, conical filter design allows you to go up to 100,000 miles between filter services under normal highway driving conditions, so you avoid buying disposable paper filters. Expect a louder intake note: owners on user forums have reported that K&N intakes on the 3.5L Explorer are so noisy in the cab that some considered removing them. For the install, the manufacturer says the kit is designed to replace the OE intake, using the same mounts and holes. It is a driveway-friendly job for anyone with basic hand tools and careful attention to the sheet. Long-tail searches: 77-2576KTK cold air intake, 3.5L V6 mandrel bent aluminum intake, oiled cotton reusable air filter Ford Flex Taurus.
The manufacturer's catalog and install sheet for this part number reference the Ford Flex and Taurus, not the Explorer. K&N lists a separate 3.5L Explorer intake under a different part number, so confirm fitment with the manufacturer using your VIN before ordering.
The manufacturer describes the filter as washable and reusable, with service typically needed only up to 100,000 miles under normal highway driving. Driving conditions will shorten that interval.
Per the manufacturer's install sheet, the required tools are a ratchet with extension, an 8mm socket, a 4mm Allen key, and a flat-blade screwdriver. Disconnecting the negative battery cable erases pre-programmed electronic memories. Write down radio presets first, since some radios will require an anti-theft code to be entered after the battery is reconnected. The manufacturer also warns that failure to follow installation instructions and not using the provided hardware may damage the intake tube, throttle body, and engine. Install the mass air sensor, connect the crankcase vent and EVAP hoses, then start the engine and listen for air leaks or odd noises.
