Ford Aerostar 1997 — technical service bulletin
Bulletin BC3491972301 · NHTSA communication 51484 · issued Jan 23, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997
model years
3
vehicle entries
Official summary
Some 4.0l engines with block heaters may experience coolant leaks due to interference with the block. *jd
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.