TSB SSM-54678 — Ford Service bulletin
SSM-54678 is a service bulletin on file with NHTSA for 2 Ford models, 2021–2025 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Some 2021-2026 F-150 vehicles equipped with a 5.0L/5.2L engine, 2021-2025 F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis vehicles equipped with a 6.8L/7.3L engine and 2021-2025 E-Series/F-650/F-750 vehicles equipped with a 7.3L engine may exhibit a rattle/scraping…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years SSM-54678 names
Every document filed under SSM-54678
| Document ID | Filed | Type |
|---|---|---|
| SSM 54678 | March 20, 2026 | Service bulletin |
What SSM-54678 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB SSM-54678?
SSM-54678 is a service bulletin filed with NHTSA by Ford, covering 2 Ford models across the 2021–2025 model years. NHTSA's summary reads: Some 2021-2026 F-150 vehicles equipped with a 5.0L/5.2L engine, 2021-2025 F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis vehicles equipped with a 6.8L/7.3L engine and 2021-2025 E-Series/F-650/F-750 vehicles equipped with a 7.3L engine may exhibit a rattle/scraping…
Which vehicles does SSM-54678 cover?
NHTSA's file names Ford F-250 (2021–2025); Ford F-350 (2021–2024). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB SSM-54678 a recall, and is the repair free?
No. SSM-54678 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of SSM-54678?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under SSM-54678, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under SSM-54678. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.