The Crankcase is made up of components including this Set Crank Case Kit which is the most expensive.
A sample from the products for the Crankcase include: Brea Ther, Screw, Pan Head(3rm), Pin, Dowel, Plug Straigtscrew 132153510000.
Of all the components that make up this Crankcase the Brea Ther has the lowest price.