The aFe MagnumFORCE Stage-2 Pro 5R intake (MPN 54-13063R) is an open-element cold air intake for the 6.4L HEMI V8 in the Jeep Grand Cherokee WK2 SRT and SRT8. The system uses a 7" tall 360-degree radial flow air filter with a 6-1/8" x 4-1/8" oval flange and oiled Pro 5R media. The housing is XLPE polymer, which the manufacturer says is heat soak resistant and extremely durable.
The manufacturer rates the intake at 49% flow increase and a measured flow of 595 CFM at 7" H2O, with +25 horsepower and +26 lb-ft of torque. These are the manufacturer's own dyno figures, and owners on user forums are more skeptical, noting that any performance gains will be toward the top of the RPM range. The stronger case for this kit is a reusable filter and sound: each intake includes a washable, reusable filter in Pro 5R form. Buyers searching for a 6.4 Hemi Grand Cherokee SRT cold air intake, a washable Pro 5R filter, or a WK2 intake that bolts to factory mounts should find this kit a fit.
No. The manufacturer lists this SKU for the 6.4L HEMI and sells a separate Magnum FORCE Stage-2 kit, part 54-13023R, for the 5.7L HEMI.
The manufacturer describes the Pro 5R filter as washable and reusable. Owners on user forums warn that oiled filters need careful cleaning and light re-oiling, because too much oil can get past the filter and into the intake tract.
The manufacturer says this intake reuses factory mounting locations and requires no cutting or drilling. The manufacturer's install sheet for the sibling 5.7L WK2 Magnum FORCE kit lists an 8mm nut driver as the required tool, so check the 6.4L sheet before you start. Owners on user forums who installed a different aFe intake on a WK2 described removing the engine cover, unclipping the resonator box, moving the three rubber airbox grommets to the new housing, and reconnecting the intake air temperature sensor and PCV hose. Plan for careful clip removal, since the factory airbox clips are easy to break.
