Ford F-150 2021–2025 — technical service bulletin
Bulletin SSM 54194 · NHTSA communication 11022907 · issued Sep 5, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2021–2025
model years
5
vehicle entries
Official summary
Some 2021-2025 F-150 vehicles built on or before 30-Apr-2025 equipped with the 9.75" rear axle (minor feature code EGPAF) may exhibit a drive pinion seal leak. To confirm a vehicle is built with a minor feature code EGPAF, review the build information by double-clicking the vehicle identification number in the upper left-hand corner in the Professional Technician System (PTS). This may be due to the rear axle drive pinion seal. To correct this condition, replace the rear axle drive pinion seal with revised part number NL3Z-4676-A. Refer to Workshop Manual (WSM), Section 205-02. For claiming, u
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.