I think it's more associated with cost. When you aren't sure you want and exact answer something like PN xxx fits 2011 to 2013. But the truth is that the front and rear diff in the og mav and the commander are quad diffs from the outlander. (Bad engineering practice) so there are multiple PN that fit can fit. But I think it's safe to say and please say if I'm wrong or not. That if the diff looks the same whether it came from the original mav or an outlander it will fit the commander.
If they changed one part inside the part number for the diff changed. So yes the diff part number doesn’t matter. As long as it’s out of the 500 up quad or a commander or OG mav they will fit and work . They are all the same gear ratio all have same pinion shaft yoke spline count and size.
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