Ford Bronco 2023 — technical service bulletin
Bulletin 23B05 · NHTSA communication 10232586 · issued Feb 10, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2023
model years
3
vehicle entries
Official summary
Certain 2023 Model Year Explorer, Bronco, Ranger Vehicles Equipped with 2.3L Gas Engine In all of the affected vehicles, a damaged fixture used during the engine block machining process may have allowed the dimension of one of the head bolt bore holes to exceed specification, reducing head bolt thread engagement.
Vehicles covered
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.