Mac Auto Parts 18913 Grand Cherokee 4.0L 4.7L Muffler Exhaust System WalkerULTRA FIT Cat Back OEM style Replacement Exhaust System that will fit JEEP Grand Cherokee 4.0L & 4.7L engine ( will not fit high output 4.7L ) Converter Back System Includes 1x Part# 5C1621 Tail pipe 1x Part# 152 123 Walker Muffler 2x Part# MC2HD Clamps