Search by number: 2006 Jeep Liberty 3.7L 6 Cyl Alternator ProAmp 13873 $108.00 each OPTIONS: Standard 136 Amps NDenso Unit ProAmp 13913 $163.00 each OPTIONS: Optional 160 Amps NDenso Unit ProAmpN 13873N $168.00 each OPTIONS: Standard 136 Amps NDenso Unit ProAmpN 13913N $214.00 each OPTIONS: Optional 160 Amps NDenso Unit Why is there more than one unit for my car? Look at the TECH SPECS when more than one unit is shown for your car. AMPS (ELECTRIC CAPACITY): must match you vehicle electric requirements. *** Call us if you are looking to increase your unit capacity! OE ALTERNATOR MANUFACTURER: It is recommended to match the Make of your alternator