23S59 – Wheel Hub Extension Torque Verification – 2022-2023 Ford F350-F600 Super Duty

November 9, 2023 NHTSA CAMPAIGN NUMBER: 23V758000

Front Wheel and Hub Extender May Detach

Wheel detachment can result in a loss of vehicle control and create a road hazard, increasing the risk of a crash.


NHTSA Campaign Number: 23V758

Manufacturer Ford Motor Company


Potential Number of Units Affected 13



Ford Motor Company is recalling certain 2022-2023 Ford Super Duty F-350, F-450, F-550, and F-600 vehicles. The fasteners for the front wheel hub extender may be insufficiently tightened, which can result in the wheel and wheel extender detaching from the vehicle.



Owners are advised not to drive their vehicle until the repair has been performed. Dealers will inspect the front wheel hub extender retaining nuts. If the retaining nuts are loose, dealers will replace the wheel hub extender, retaining nuts, and hub assembly. Repairs will be performed free of charge. Owner notification letters are expected to be mailed November 27, 2023. Owners may contact Ford customer service at -866-436-7332. Ford’s number for this recall is 23S59.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.


Check if your Vehicle has a Recall


November 8, 2023

Safety Recall 23S59
Certain 2022-2023 Model Year F350-F600 Super Duty Vehicles with Wheel Hub Extensions
Wheel Hub Extension Torque Verification


Vehicle Model Year Assembly Plant Build Dates
Super Duty 2022 Ohio December 8, 2022
F350 – F600 2023 Ohio March 22, 2023 through July 19, 2023
F350 – F600 2023 Kentucky Truck February 22, 2023 through August 31, 2023

US population of affected vehicles:13. Affected vehicles are identified in OASIS and FSA VIN Lists.




In some of the affected vehicles, the front wheel hub extension nuts may be insufficiently tightened. Front wheel hub extender retaining nuts that have been insufficiently tightened may result in front wheel and wheel extender detachment from the vehicle, increasing the risk of a crash. A wheel assembly that separates from a vehicle while driving may create a road hazard, increasing the risk of injury or crash.



Before driving, demonstrating, or delivering any new in-stock vehicles involved in this safety recall dealers are to verify the front wheel hub extension nut torque on both sides of the vehicle. This service must be performed on all affected vehicles at no charge to the vehicle owner. Owners are advised not to drive the affected vehicles (see VIN list) until this repair has been completed. To assist vehicle owners to have this repair completed dealers are to:

  • Proactively contact owners to instruct them to stop driving their vehicle
  • Arrange to tow the owner’s vehicle to the dealership for inspection (rentals are authorized – see Rental Vehicles)
  • Re-deliver the owner’s vehicle after the Recall has been completed



Owner letters are expected to be mailed the week of November 27, 2023. Dealers should repair any affected vehicles that arrive at their dealerships, whether or not the customer has received a letter.


Federal law requires dealers to complete this recall service before a new vehicle is delivered to the buyer or lessee. Violation of this requirement by a dealer could result in a civil penalty of up to $26,315 per vehicle. Correct all vehicles in your new vehicle inventory before delivery.



– Not a Mobile Service Repair



  • Ford has issued instructions to stop selling/delivering or driving used vehicles under this safety recall until it is verified that the hub extension torque is correct on both front wheel hub extensions. Owners should contact their dealer for an appointment to have their vehicles remedied as soon as practicable.
  • Immediately contact any of your affected customers whose vehicles are not on your VIN list but are identified in OASIS. Give the customer a copy of the Owner Notification Letter (when available) and schedule a service date.
  • Correct other affected vehicles identified in OASIS which are brought to your dealership.
  • Dealers are to prioritize repairs of customer vehicles over repairs of new and used vehicle inventory.



  • Correct all affected units in your new vehicle inventory before delivery.
  • Use OASIS to identify any affected vehicles in your used vehicle inventory.



The Fixing America’s Surface Transportation (FAST) Act law effective June 2016 prohibits a rental company from selling, renting, or leasing vehicles subject to a safety or compliance recall. Please consult your legal counsel for legal advice.



Affected branded / salvaged title vehicles are eligible for this recall.



  • This safety recall must still be performed, even if the owner has paid for a previous repair. Claiming a refund will not close the recall on the vehicle.
  • Ford Motor Company is offering a refund for owner-paid repairs covered by this recall if the repair was performed before the date indicated in the reimbursement plan, which is posted with this bulletin. Owners are directed to seek reimbursement through authorized dealers or, at their option, directly through Ford Motor Company at P.O. Box 6251, Dearborn, MI 481216251.
  • Dealers are also pre-approved to refund owner-paid emergency repairs that were performed away from an authorized servicing dealer after the end date specified in the reimbursement plan. Non-covered repairs, or those judged by Ford to be excessive, will not be reimbursed.
  • Refunds will only be provided for the cost associated with front wheel hub extension repair.



If the vehicle fails the torque inspection, dealers are pre-approved for up to 2 days for a rental vehicle. If the rental was provided under the Advance Notice published on November 3, 2023, dealers are preapproved for up to 7 days. Follow Extended Service Plan (ESP) guidelines for dollar amounts. Rentals will only be reimbursed for the day(s) the vehicle is at the dealership for part replacement. Prior approval for more than 7 rental days is required from the SSSC. Contact the SSSC via the SSSC Web Contact Site for consideration and approval if appropriate.



If towing is required, dealers are authorized to claim up to a maximum value of $250 to provide towing services for this program.


VEHICLE DELIVERY- Participating Dealers

Dealers participating in the Remote Experience Program:

  • Refer to EFC12071, 2023 Remote Experience Program, Pick-Up & Delivery (PDL) Offset section for additional details.


VEHICLE DELIVERY- Non-participating Dealers

Dealers not participating in the 2023 Remote Experience Program for Pick-Up & Delivery are authorized to claim unique services for completing this program.

  • Dealers are authorized to claim one-half labor hour per repair for vehicle Delivery services upon the completion of the repair. Refer to Labor Allowances for details.
  • Dealers must retain a Vehicle Pick-Up & Delivery Record with the repair order documentation.



Part Number  Description Order Quantity
F350 Vehicles with 8 Lug Wheel Hubs
HC3Z-1A014-B Wheel Hub Extension/Spacer – 8 Lug 1
W520506-S437 Extension/Spacer Nut (package of 4) – 8 Lug 2
PC3Z-1104-B Wheel Hub Assembly – 8 Lug 1
BK3Z-1012-A Wheel Hub Nuts 4
W710517-S439 Caliper Anchor Bolts 4
F450-F600 Vehicles with 10 Lug Wheel Hubs
HC3Z-1A014-A Wheel Hub Extension/Spacer – 10 Lug 1
W520506-S437 Extension/Spacer Nut (package of 4) – 10 Lug 3
PC3Z-1104-C Wheel Hub Assembly – 10 Lug 4×2 1
PC3Z-1104-D Wheel Hub Assembly – 10 Lug 4×4 1
BK3Z-1012-A Wheel Hub Nuts 4
W710517-S439 Caliper Anchor Bolts 4




1. Remove both front wheels and tires. Follow Workshop Manual (WSM) procedures in Section 204-04A.

2. Using a torque wrench set at 130 lb.ft (176Nm), check the torque of each nut to the hub extension, 8 or 10 per side, on both sides of the vehicle. Observe for attachment nut rotation. See Figure 1. Was any rotation present?

No – Reassemble the vehicle. Follow the WSM procedures in Section 204-04A.

Yes – Continue to Step 3.

NOTE:  10 lug wheel shown, 8 lug wheel similar.


3. Was rotation of the extension nuts found on one or both sides?

One side fails – Replace hub assembly, hub extension and nuts on failed side. To replace hub assembly follow WSM procedures in Section 204-01A (4×2) or 204-01B (4×4).

Reassemble the vehicle. Follow the WSM procedures in Section 204-04A. Both sides fail – Contact Special Service Support Center (SSSC) for additional information.




Chronology :

On October 19, 2023, Ford’s Critical Concern Review Group (CCRG) initiated an investigation into a field report of a wheel and wheel hub extender detachment on a 2023 Ford Super Duty vehicle during a low-speed maneuver. The field report indicated vehicle vibration prior to the wheel and wheel extender detachment and no injuries were reported.

Ford conducted a review of the axle supplier’s assembly processes and production records and identified a concern at the supplier’s manufacturing facility. The review of supplier records identified axles that may contain insufficiently torqued wheel extender retaining nuts. If certain assembly equipment faults or malfunctions during manufacturing, torque data for a previously assembled front wheel hub extender can be erroneously recorded for a front wheel hub extender currently in the retaining nut torquing station without performing the torque operation. Ford identified the specific instances when this occurred, and can trace suspect wheel hub extenders by axle serial number to specific vehicle VINS.

As of November 01, 2023, Ford is aware of one (1) field report received on October 16, 2023, related to this concern.

On November 03, 2023, Ford’s Field Review Committee reviewed the concern and approved a field action.

Ford is not aware of any reports of injury related to this condition.


8 Affected Products


FORD F-350 SD 2022-2023
FORD F-450 SD 2022-2023
FORD F-550 SD 2022-2023
FORD F-600 SD 2022-2023


4 Associated Documents

Recall Acknowledgement

RCAK-23V758-8427.pdf 646.216KB



Defect Notice 573 Report

RCLRPT-23V758-3873.PDF 215.96KB



Manufacturer Notices(to Dealers,etc)

RCMN-23V758-0192.pdf 47.294KB



Manufacturer Notices(to Dealers,etc)

RCMN-23V758-5885.pdf 416.878KB



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Last update on 2023-11-06 / Affiliate links / Images from Amazon Product Advertising API

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