The most expensive part in this assembly is the Shaft Comp,cam.
A sample from the products for the E-4 include: Seal,valve Stem, Shaft,ex Rocker A, Shaft,in Rocker A, Bolt Knock 5mm.
This part-list fiche shows all the components that make up the Nvs501sh Today 2002 (2) Japan Af61-100 E-4 .