Will it fit my 2002 Outback 2.5?

Yes, it is listed for the 2000–2002 Legacy and Outback with the 2.5L engine. Check your engine and year before ordering, since other engines use different units.

Is this new or rebuilt?

It is a new replacement alternator, not a reconditioned one. The internals and housing are new rather than refurbished.

Does it need any wiring changes?

No. It uses the internal regulator and internal fan layout of the original, so it connects to the existing harness and mounts on the stock bracket.

How does it compare with a factory alternator?

It matches the original fitment and output at a lower cost. A factory unit has a longer track record, but this one avoids the unknowns of a rebuilt core.

What should I check before installing?

Confirm the battery and charging circuit are healthy, and inspect the belt and tensioner while the alternator is off. A loose or worn belt can mimic alternator failure.