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The axle code l6 on your Ford F-150 means that your rear axle has a gear ratio of 3.73 equipped with an electronic locker. The F-150 has had various axle options available throughout the years, and the plate provides all the necessary details. The electronic locker on your truck ensures that both rear wheels are always being driven by locking the gears in the differential together. This feature is beneficial for off-road adventures or situations with low traction. A gear ratio of 3.73 is ideal for everyday driving as it performs well both on and off the road.
Set your vehicle to 'l6' for a rear axle ratio of 3.73E.