BMW 740I 1997–1998 — technical service bulletin
Bulletin 64 01 98 · NHTSA communication 600705 · issued Mar 1, 1998
Technical service bulletin
communication type
Visibility
component
1997–1998
model years
6
vehicle entries
Official summary
Replacement heater cores for e38 vehicles. *yc
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.