BMW 430I 2018 — technical service bulletin
Bulletin B512418 · NHTSA communication 10149533 · issued Oct 1, 2018
Technical service bulletin
communication type
Fuel System, Gasoline
component
2018
model years
2
vehicle entries
Official summary
SERVICE ACTION. RE-WORK SEAL OF FUEL FILLER HOUSING. The fuel filler pipe seal is possibly not mounted and/or only poorly mounted over the wheel arch flange. If incorrectly installed, water may leak into the luggage compartment. Incorrect installation during production.
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.