For Jeep Cherokee Comanche l4 l6 2.5 4.0 6 Cylinder 1991-2001. 1 X Aluminum Shroud. For Jeep 91-01 Cherokee 2.5L 4.0L 91-92 Comanche 4.0L. For Jeep Cherokee XJ 6 Cylinder 1991-96 97-2001. The fan shroud basically houses the fan blades securing it in place and keeping it from damaging the other engine components that may disturb the smooth and even operation of the engine.