What is the rear end gear ratio of a 2013 f150?
The 2013 Ford F-150 does not have a single rear axle ratio; it offered several options—3.31, 3.55, 3.73, and 4.10—depending on the engine, transmission, drivetrain, and optional packages.
Why the ratio varies across the lineup
Ford used different axle ratios to balance towing capability, payload, fuel economy, and overall performance. The exact ratio you got depended on the specific combination of engine, transmission, whether the truck was 2WD or 4WD, and any towing or heavy-duty packages installed.
Common rear axle ratios by configuration
The following ratios were commonly available for 2013 F-150 models. Availability depended on the engine, transmission, trim level, and whether the truck was configured for 2WD or 4WD.
- 3.31:1 — found on some base configurations and certain engine/transmission combinations.
- 3.55:1 — a middle-ground option for balanced performance and efficiency.
- 3.73:1 — popular for higher torque and stronger pulling capability.
- 4.10:1 — typically paired with heavy-duty packages, certain 4x4 configurations, and maximum payload setups.
Note: Not every 2013 F-150 has all four options; exact availability was tied to the build. To be certain, check the axle tag on the rear differential or the original window sticker for your vehicle.
How to determine your exact rear axle ratio
There are several reliable ways to confirm the rear axle ratio for a specific 2013 F-150. The steps below help you identify the correct figure for your truck.
- Door jamb sticker: The driver-side door sticker usually lists the axle ratio along with tire size and GVWR.
- Rear differential tag: The differential housing often has a tag indicating the gear ratio (for example, 3.31, 3.55, 3.73, or 4.10).
- Owner’s manual or original window sticker: The axle ratio is included in the technical specifications.
- VIN decoding: A Ford dealer or online VIN decoder can reveal the exact axle specification tied to your VIN.
- Dealership check: If in doubt, a quick check at a Ford dealership will confirm your exact axle ratio.
Knowing your exact rear axle ratio is essential for accurate towing calculations, fuel economy estimates, and compatibility with gears or performance upgrades.
Additional considerations
Different packages, such as EcoBoost or V8 configurations paired with 4x4, can influence the available ratios. Always verify your exact build by checking the vehicle’s VIN and build sheet to avoid any discrepancies.
In summary, the rear axle ratio for a 2013 Ford F-150 is not fixed; it varies by configuration and can be 3.31, 3.55, 3.73, or 4.10. Confirm your exact ratio on the vehicle itself or via the VIN to ensure accurate maintenance, towing planning, and any axle-related upgrades.
Summary: The 2013 F-150 offered multiple rear axle ratios depending on the configuration. Check the door tag, differential tag, or VIN to confirm the exact gear ratio for your truck.
