AR3Z4215A Ford 8.8" Trac-Lok Differential Spider Gear Internal Kit 31 Spline
You can purchase the 7/8" cross pin if needed, part # FL3Z4211A. -- This part fits 2005-2012 Ford Crown Victoria, 2003-2004 Ford Expedition, 2005-2006 Ford Econolines, 2004-2008 Ford F-150, 2003-2006 Lincoln LS, 2005-2006 Mercury Grand Marquis, 2001-2005 Ford Explorer Sport Trac, 2003-2005 Ford Thunderbird, 2002-2005 Ford Explorer, 2002-2005 Mercury Mountaineer, 2003-2005 Lincoln Aviator, 2004-2012 Lincoln Town Car, 2001-2012 Ford Mustang.
