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The axle code on the Ford F-150 helps drivers identify the correct axle ratio for their vehicle's specific trim level. To find the code, simply open the driver's door and check the door pillar near the latch for the Truck Safety Compliance Certification Label. Look for the "AXLE" listing on the label to find a code that corresponds to the correct ratio. For example, the code "27" corresponds to a 3.31 ratio. Different ratios impact the F-150's performance, hauling capacity, and fuel efficiency. Higher ratios deliver more power to the rear wheels, enhancing towing capability but reducing fuel efficiency. A 3.31 ratio is suitable for light towing, while opting for 3.55 gears would offer greater hauling power.
The number "27" corresponds to a ratio of 3.31.
The axle code 27 on your 2018 Ford F150 means that your truck is fitted with a 3.31 axle ratio.