Search by number: 2005 Acura RSX 2.0L Alternator ProAmp 13966 $121.00 each OPTIONS: RSX Exc Type S Model; Mitsubishi; Eng code K20A ProAmp 13965 $145.00 each OPTIONS: RSX Type S Model; NDenso; Eng Code K20Z 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