Brand new, never been used or installed.
If you have a 2015-16 with 3.15 gearset and are looking to convert to a 3.31/3.55/3.73 ring & pinion, your stock limited slip differential will NOT work; the one I'm selling is the specific housing that Ford makes for these.
Compatible with *any* 2015 GT / Ecoboost / V6 car (34 spline, 8.8" IRS) running a 3.31 / 3.55 / 3.73 ring & pinion, both automatic and manual.
Ford Service Part #: FR3Z-4026-B
$125 shipped anywhere in the lower 48 states.
