Search by number: 2010 Infiniti G37 3.7L 6 Cyl Alternator ProAmp 11340 $140.00 each OPTIONS: 150 Amps; to 02/2010 ProAmp 11438 $161.00 each OPTIONS: 130 Amps; From 02/2010 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