1JZ/2JZ VVTi Lower Timing Pulley with 36-2 Trigger Wheel. This is the (VVTI-only)pulley that goes on the crank that turns the timing belt and has the 36-2 tooth trigger wheel for the crank trigger. On these pulleys Toyota made the trigger wheel as part of the pulley itself, so welding the trigger wheel isn't needed like the older model 12 tooth pulley.