Search by number: 2007 Mercedes Benz CL CLASS 5.5L Alternator ProAmp 11220 $235.00 each OPTIONS: CL550 Standard 180 Amp ProAmp 11304 $268.00 each OPTIONS: CL600 ProAmp 11305 $268.00 each OPTIONS: CL550 Option 220 Amp 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