Ferrari Part Number 16104421, SELFLOCKING NUT shown here as used in Ferrari 328 GTB/GTS (1988 -1989 inc. ABS brakes) Table 49 Rear Suspension - Wishbones (Starting From Car No. 76626). Location in Diagram: 24. Required Quantity: 2. This Ferrari part is used in more than one diagram. Click on the diagrams below to see alternative uses of this part: