Case Style Aluminum Each For Ford. Part Number: P3203BB. They use superior 206-T4 heat-treated aluminum, which has 12 percent more yield strength and 32 percent higher tensile strength than the commonly used 356-T6; it’s also substantially lighter than an iron case.

Case Style Aluminum Each For Ford. Part Number: P3203BB. They use superior 206-T4 heat-treated aluminum, which has 12 percent more yield strength and 32 percent higher tensile strength than the commonly used 356-T6; it’s also substantially lighter than an iron case.