Friday, August 7, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

BMW 550I 2012–2017technical service bulletin

Bulletin B110117 · NHTSA communication 10142922 · issued Nov 1, 2017

Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2017
model years
38
vehicle entries

Official summary

N63T AND S63T ENGINE: VALVE SEAL REPLACEMENT: This SI provides a new tool and a new procedure for the N63TU valve seals replacement.

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.