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SIB 51 27 19: Side trim is loose or comes off

Side trim is loose or comes off on BMW G29 models (2019); the fix is replacing the affected part.

BMW service bulletin · NHTSA ID 10166233 · Sep 2019 · also written SI B51 27 19, B512719

What it covers

A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.

SIDE TRIM IS LOOSE OR COMES OFF: INFORMATION Trim replacement is only required if the trim strip is missing or damaged otherwise the original trim can be re-installed.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 51 27 19
Also written: SI B51 27 19, B512719, 51 27 19, SIB-51-27-19, SI B512719
NHTSA ID10166233
Document IDs filedB512719
TypeService bulletin
Date
ModelsZ4
Model years2019
ChassisG29
EnginesB46/B48, B58
Component (NHTSA)Structure

Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.

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Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.