The 11241 is a 12v 150 amp alternator, a new aftermarket direct replacement engineered to match the fit, form, and function of the original alternator. Specifications: - Voltage: 12V - Output: 150 amp - Rotation: Clockwise (CW) Vehicle Compatibility: - Makes: Jeep (2007-2010) - Models include: Jeep Grand Cherokee; Jeep Commander - Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 11241, 13-8870, 210-1111, 210-1209, 213-8870, 421000-0550, 421000-0551, 421000-0552, 421000-0660, 90-29-5687 (plus 1 more on file). Why ePartsGlobal: specialist in heavy-duty starters, alternators, and charging-system electrical parts. Backed by a 1-year warranty, free shipping on orders over $19.95, and fast fulfillment. Ships from USA.