The Cotter Valve is the most widely applied product in the RB50 1987 (H) USA (E03) CAM SHAFT - VALVE ( four times ).
The Bolt(6x10.5) is the lowest priced item on this Cam Shaft - Valve schematic.
A sample from the products for the Cam Shaft - Valve include: Washer,sprocket, Sprocket,camshaft, Screw,tappet Adjusting, Seal,oil(5x10.5x8.4).