Search by number: 1999 Audi A6 & A6 Quattro 2.8L Alternator ProAmp 13932 $153.00 each OPTIONS: Valeo Unit Late ProAmp 13357 $219.00 each OPTIONS: Bosch Unit Early ProAmpN 13357N $176.00 each OPTIONS: Bosch Unit Early ProAmpN 13932N $207.00 each OPTIONS: Valeo Unit Late 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