Axle Ratio Code

Fig 1: Identifying Axle Ratio Code

Courtesy of FORD MOTOR CO.

The axle ratios are:

• 58 - 2.73 conventional (non-limited slip) - without Traction Control
• Z5 - 3.27 conventional (non-limited slip)
• C6 - 3.55 limited slip
• X5 - 3.27 limited slip
• C8 - 2.73 conventional (non-limited slip) - with Traction Control