Search by number: 2003 Toyota Matrix 1.8L Alternator ProAmp 13879 $107.00 each OPTIONS: XRS ProAmp 13878 $115.00 each OPTIONS: Exc XRS ProAmpN 13878N $196.00 each OPTIONS: Exc XRS ProAmpN 13879N $198.00 each OPTIONS: XRS 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