Used OEM Alternators & Generators: 2005-2009 Subaru Legacy Outback Alternator 2.5L 23700Aa55A. Pulled from a 2006 Subaru Legacy (stock #260190) at Brush Auto Salvage in Brush, Colorado. OEM part number 23700AA55A. Shipping in the US is $20. Inspected before it ships and covered by a 30-day warranty.