2015-2025 Ford F-150 Front Hub Assembly: Solving Noises & IWE Confusion

Symptoms of a Failing Hub Assembly

A bad hub assembly typically announces itself with distinct noises and vibrations. Ignoring these symptoms can be dangerous, as a complete failure can lead to the wheel separating from the vehicle.

Grinding, Growling, or Humming Noise

This is the most common symptom. The sound is similar to playing cards in a bicycle spoke or a deep, resonant hum. It is directly related to wheel speed and will get louder and higher-pitched as you accelerate. A key diagnostic trick is to notice if the sound changes when you turn. If the noise gets louder when turning left, the right-side hub is likely the culprit as it is under a greater load, and vice-versa. This helps distinguish it from tire noise, which usually remains constant during turns.

Clicking or Popping

A clicking or popping sound, especially when turning, can indicate a worn-out bearing. While this can also be a symptom of a bad CV (Constant Velocity) joint, it's often associated with the hub assembly when combined with a humming noise.

Vibration in the Steering Wheel

As the bearings inside the hub wear, they can develop excessive play. This looseness translates into a vibration that you can feel in the steering wheel and floorboard. The vibration will worsen with speed and may be more noticeable during long, sweeping turns on the highway.

ABS or Traction Control Light

The hub assembly houses the wheel speed sensor for the ABS. If the sensor fails or the magnetic ring it reads from becomes damaged by a loose, wobbling bearing, it can trigger the ABS and traction control warning lights on your dashboard. This will disable these important safety systems.

Known Issues, TSBs, and Recalls

While there are no widespread recalls specifically for the front hub assemblies on 2015-2025 F-150s, there are related issues and recalls to be aware of.

• IWE System TSBs: Ford has issued multiple Technical Service Bulletins (TSBs) for the IWE system, which can produce symptoms similar to a bad hub. TSB 20-2028 and TSB 24-2189A address intermittent grinding noises by outlining procedures to inspect vacuum lines, replace check valves, and replace the IWE actuators themselves. These issues are common and should be ruled out before replacing a hub assembly on a 4WD truck.
• Rear Axle Bolt Recalls: Ford has issued recalls (NHTSA 23V-896 / Ford 23S65 and 25S82) for certain 2021-2025 F-150 models, particularly those with the Trailer Tow Max Duty package, for rear axle hub bolts that can fatigue and break. Symptoms include a clicking or rattling noise from the rear of the truck. While this recall concerns the rear axle, not the front hub assembly, it's important not to confuse the noises.

Compatibility and Part Variations

Choosing the correct hub assembly is critical, as there are several variations. Installing the wrong part can lead to ABS system failure, 4WD system malfunction, or improper fitment.

• 2WD (4x2) vs. 4WD (4x4): These are the most significant differences. 4WD hubs are designed to accept a CV axle shaft and engage with the IWE system. 2WD hubs are not. They are not interchangeable.
🎬 Watch: 2WD front wheel bearing replacement walkthrough
• 2015 Mid-Year Build Date Change: For the 2015 model year, there was a change in the hub assembly design on or around June 22, 2015. Parts for vehicles built on or before this date are different from those built after. It is essential to check the vehicle's production date, usually found on the sticker in the driver's side door jamb.
• Raptor Models: Ford F-150 Raptor models use different, heavy-duty suspension components, and their hub assemblies are not compatible with standard F-150s.
• Police Package (SSV/Police Responder): Some models equipped with police packages may use specific hub assemblies. It's important to verify the part number for these specialized trims.

Buying a Used Hub Assembly

A high-quality, low-mileage used OEM hub assembly can be a smart, cost-effective alternative to expensive new parts or lower-quality aftermarket options. OEM parts are manufactured to Ford's original standards for metallurgy, bearing quality, and sensor accuracy, ensuring a proper fit and long service life.

Inspection Checklist

When inspecting a used hub assembly, look for the following:

• Smooth Rotation: Turn the hub by hand. It should spin smoothly with no roughness, grinding, or catching.
• No Play: Try to wiggle the hub flange back and forth. There should be no noticeable play or looseness. Any wobble indicates a worn bearing.
• Intact ABS Sensor and Wire: Carefully inspect the ABS sensor wire and its connector. Ensure it is not cut, frayed, or damaged. A damaged sensor will require replacing the entire hub.
• Clean Wheel Studs: Check that the wheel studs are straight and the threads are not damaged or stripped.
• No Physical Damage: Inspect the housing for any cracks, significant corrosion, or signs of impact damage.

Mileage Considerations

F-150 hub assemblies can fail at a wide range of mileages, but failures often begin to be reported on forums around 80,000 to 120,000 miles. When buying used, look for a part from a vehicle with the lowest mileage possible to maximize its remaining service life.

Cost Breakdown

Prices can vary based on brand, location, and whether the part is for a 2WD or 4WD model. Here is a general cost comparison:

Replacement Overview and Torque Specs

Replacing an F-150 hub assembly is a feasible DIY job for someone with intermediate mechanical experience and the right tools. It does not typically require a post-replacement alignment.

Key Steps & Procedures

1. Safely lift and support the vehicle and remove the wheel.
2. Remove the brake caliper and caliper bracket, and hang the caliper securely to avoid straining the brake hose.
3. Remove the brake rotor.
4. Remove the axle dust cap and the main axle nut.
5. Disconnect the ABS sensor wire and any vacuum lines for the IWE (on 4WD models).
6. From behind the steering knuckle, remove the four bolts holding the hub assembly in place.
7. Remove the old hub assembly. This may require a puller or careful use of a hammer if it is seized.
8. Clean all mounting surfaces thoroughly before installing the new hub.
9. On 4WD models, use a vacuum pump to engage the new IWE to ensure it slides onto the axle splines correctly.
🎬 See this step-by-step hub replacement video

Critical Torque Specifications

Using a torque wrench is mandatory for this job to ensure safety and prevent premature failure. Torque specs can vary slightly by model year and configuration, but these are common values. Always verify the correct specs for your specific vehicle.

• Hub Assembly Mounting Bolts (to knuckle): 129 ft-lbs (175 Nm) or 133 ft-lbs (180 Nm)
• Main Axle Nut: 30 ft-lbs (41 Nm)
• Brake Caliper Bracket Bolts: 184 ft-lbs (250 Nm)
• Wheel Lug Nuts: 150 ft-lbs (204 Nm)

Frequently Asked Questions