Of all the components used in this assembly the Cast Wheel, Front is the most expensive.
Parts such as the 30 Front Wheel: Collar, Wheel, Oil Seal (25x40x5-101), Bearing, Balancer, Wheel are included in the Xj6n 2014 20st Europe 1n20s-300e1 30 Front Wheel parts fiche.
On this parts fiche the Bearing is the most specified component.