Required For Installation. Starting in 2010 Ford changed the inner rear gear pinion bearing in all 8.8" equipped Mustangs. Because of this change you will require a new 8.8" rear gear pinion bearing (Ford part# 9L3Z-4630-A) to install 8.8" gears in your 2010 or newer Mustang.
Application. This Rear Gear Inner Pinion Bearing is intended for installation of 8.8" rear differential gears on a 2010 or newer GT and 2010-2012 GT500, as well as the 2011 or newer V6 Mustangs. (Will not fit 2013 GT500).
Mustang Fitment: 2010, 2011, 2012, 2013
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