A sample from the products for the Waterpump include: Bearing(4jt), Impeller Shaft Assy, Cover, Housing, Pin,dowel (603).
This Cover, Housing is the most expensive of the items that make up this Waterpump assembly.
The most reasonably priced component used on the Tz125 1997 4jt4 Usa 274jt-100e1 Waterpump is the Bolt,socket.