The K&N 63-1563 is a 63 Series AirCharger cold air intake for the 5.7L V8 in Dodge Durango and Jeep Grand Cherokee models. It replaces factory air filter and intake tube with a roto-molded HDPE tube paired with an oversized oiled cotton air filter, and a heat shield keeps hot engine-bay air away from the inlet. The manufacturer describes the power gain as guaranteed, but its product page does not list a figure.
Compared with stock or a cheap drop-in filter, the main case for this kit is a reusable, washable element that the manufacturer says only requires cleaning every 100,000 miles under normal highway driving conditions. Owners on user forums mention a stronger intake sound and a little more throttle response, though gains are modest. One owner argued that the stock airbox is capable of flowing more air than the stock 5.7 engine is able to process, so a freer exhaust is worth considering for a more noticeable result.
The manufacturer states the kit replaces the factory air filter and intake tube, and the heat shield is installed into the vehicle with the provided hardware.
No. The manufacturer's installation sheet states the kit was not designed to fit vehicles with a body lift.
The manufacturer's instructions call for disconnecting the negative battery cable. Doing so erases pre-programmed electronic memories, so write down memory settings first, and some radios will require an anti-theft code after reconnecting.
Per the manufacturer's installation sheet, failure to follow the installation instructions and not using the provided hardware may damage the intake tube, throttle body, and engine, so use only the included couplers, clamps, and bolts. Expect some fitting work: the sheet notes that some trimming of the edge trim will be needed for a proper fit, and the inlet air temperature sensor mounts into the new intake. Owners on user forums report roughly two hours on a first attempt, with mounting the heat shield being the most fiddly step. Plan for a basic toolset and a careful, methodical pace.
