Ford E-350 2023–2025 — technical service bulletin
Bulletin SSM 54515 · NHTSA communication 11027826 · issued Jan 22, 2026
Technical service bulletin
communication type
Suspension
component
2023–2025
model years
24
vehicle entries
Official summary
2023-2024 F-Super Duty/F-53 Motorhome Chassis/F-59 Commercial Stripped Chassis and 2023-2025 F-650/F-750/E-Series vehicles equipped with a Dana rear axle and built on or after 01-Jul-2022 may have orange/red RTV sealant used as the gasket on the differential housing cover. This does not indicate any previous repairs as it is used by Dana during assembly.
Vehicles covered
- 2023 Ford E-350
- 2024 Ford E-350
- 2025 Ford E-350
- 2023 Ford E-450
- 2024 Ford E-450
- 2025 Ford E-450
- 2023 Ford F-250 SD
- 2024 Ford F-250 SD
- 2023 Ford F-350 SD
- 2024 Ford F-350 SD
- 2023 Ford F-450 SD
- 2024 Ford F-450 SD
- 2023 Ford F-53
- 2024 Ford F-53
- 2023 Ford F-550 SD
- 2024 Ford F-550 SD
- 2023 Ford F-59
- 2024 Ford F-59
- 2023 Ford F-650 SD
- 2024 Ford F-650 SD
- 2025 Ford F-650 SD
- 2023 Ford F-750 SD
- 2024 Ford F-750 SD
- 2025 Ford F-750 SD
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.