This is a Genuine Toyota Clutch Fork Boot for 1995.5-2004 2WD or 4WD 3.4-liter equipped 6cyl R150 Tacoma/4Runner/T100 transmissions.

Starting in 1995.5 Toyota switched to air cooled clutch kits. Therefore this boot has air vents. Additionally, this 3.4-liter fork boot is offset, unlike a 2.4/2.7-liter boot which is centered.