Ferrari Part Number 137006, BRAKE MASTER HYDRAULIC VALVE ASSEMBLY (328) shown here as used in Ferrari 328 GTB/GTS (1988 -1989 inc. ABS brakes) Table 34 Clutch Hydraulic System (For Car With Antiskid System). Location in Diagram: 20. 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: