Alternator.
140 Amp. Alternator.
Alternator
Fits A4, A5, Q5, S4
2.0 LITER, 2010-12, remanufactured. 2.0 LITER, 2011-12, remanufactured. 2.0 LITER, remanufactured. A5; 2.0L; Valeo.
Alternator - Repair or Replace
Your alternator replenishes your battery when your car is running. If you have a battery light, low charge warning, or your recently replaced battery already needs a jump, the alternator in your may need to be repaired or replaced.