This high-performance alternator is a direct replacement for your Jeep Grand Cherokee 2007-2010, with a 12V voltage and 150A amperage. It features a 6-groove serpentine pulley, clockwise rotation, and comes with a pulley included. The finish is the same as OE, and it has been tested for reliability and performance. It also comes with a 1-year manufacturer warranty and is a perfect fit for your vehicle. The alternator is made of metal and has a negative ground type. The manufacturer part number is TO118774PTS, and it has interchange part numbers of 421000-0552, 421000-0660, 11241, 290-5202A, A-80343, and 290-5202.