Ferrari Part Number 13517421, STUD FOR BELT STRETCHER shown here as used in Ferrari 328 GTB/GTS (1988 -1989 inc. ABS brakes) Table 55 Air Conditioning Compressor And Controls (For Us And Sa Version). Location in Diagram: 33. Required Quantity: 1. This Ferrari part is used in more than one diagram. Click on the diagrams below to see alternative uses of this part: