AISIN OE Hydraulic Timing Belt Tensioners don't just look like the original parts - they are the original parts your vehicle left the assembly line with when new Since AISIN Timing Belt Tensioners are OE parts, they fit perfectly for a quick, no hassle installation right out of the box Advanced aluminum die casting technology allows for a lightweight yet durable product that features robust structural strength and durability characteristics Utilizes a unique hydraulic pressurizing mechanism that efficiently dampens timing belt vibration throughout the engine's designed RPM range The work involved in replacing either the timing belt tensioner or timing belt is about the same as replacing both of them - save yourself time and money in the long run by replacing both components at the same time using genuine AISIN parts Compatible with select vehicles (engine affects fitment - verify specific fitment details with fit checker above): TOYOTA: 1996-02 4Runner, 1995-98 T100, 1995-04 Tacoma, 2000-04 Tundra