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This 200-amp alternator is a direct bolt-in replacement for the factory 90–110 amp unit on 2010–2012 Subaru Legacy and Outback 2.5L models. It uses heavy-duty copper windings and an uprated high-temperature rectifier to handle high electrical loads from audio systems, lighting, or inverters without voltage drops. It suits owners who have added accessories that exceed the stock charging system. Compared with the OEM unit, it offers roughly double the amperage and better heat resistance, but it costs more and may require a larger belt or wiring upgrade.
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This is a 200-amp high-output alternator for the 2010-2012 Subaru Legacy and Outback (BM/BR) with the 2.5L engine. It replaces the factory charging unit to keep system voltage stable under heavy electrical loads. The factory unit is rated between 90 and 110 amps.
It is made in the USA. It has heavy-duty internal copper windings, heavy-gauge stator lamination and a high-temperature diode rectifier. A reinforced internal regulator is built to prevent voltage ripple.
It is a bolt-in replacement for the EJ253 and EJ255 engines and works with the factory pulleys and belt alignment. No bracket modifications are required, and it plugs into the OEM harness. A "Big 3" charging wire upgrade (positive output, battery ground and chassis ground) is recommended to reach the full 200-amp capacity. It does not fit 3.6L EZ36D flat-six models.
