This cover will fit.1993-1998 Toyota T100 Truck1999-2006 Toyota Tundra2001-2007 Sequoia1995-2014 Toyota Tacoma without locking rear differential (E-locker)2003-2009 4 RunnerThis is a direct replacement differential cover for your Toyota 8.4 rear axle, this rear axle cap is stamped from 9 gauge steel. This cover is designed with the same oil capacity as the factory cover. Your existing differential cover will need to be cut off and the new cover welded on. The fill plug uses a 9/16 allen wrench. This is the most economical fix for a rusted leaking Toyota rear axle.