Ferrari Part Number 100153, 3RD UNDERSIZE 0.762 MM. ON ? shown here as used in Ferrari 365 GT4 2+2 Table 3 Crankshaft, Connecting Rods And Pistons. Location in Diagram: 23. Required Quantity: 12. This Ferrari part is used in more than one diagram. Click on the diagrams below to see alternative uses of this part: