Of all the components used in this assembly the Cylinder is the most expensive.
This Cylinder Head diagram displays the required parts for the Tz125 1997 4jt4 Canada 274jt-100e1a Cylinder Head.
Some items from this specific schematic: Plug, Spark (r6385-105p)(4jt), Screw, Binding, Oil Seal (8x12x3-371), Nut, Flange(jn5).