BMW 330I 2020 — technical service bulletin
Bulletin B063025 · NHTSA communication 11017562 · issued Apr 29, 2025
Technical service bulletin
communication type
Engine
component
2020
model years
4
vehicle entries
Official summary
Coolant Pump Return
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.