A sample from the products for the Alternate 2 (lower Casing Drive 2 L130) include: Nut, Castle (6e5), Hose (l1030), Spacer, Clamp (6e5).
The Clamp (6e5) is the cheapest item from this partsfiche.
The Alternate 2 (lower Casing Drive 2 L130) assembly is constructed from several parts from which the Propeller (3x13"x17"-kl) is the most expensive.