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SIB 12 03 18: Exhaust service information

Exhaust service information on B46/B48/B58 engines (2016–2018); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10153743 · Jan 2019 · also written SI B12 03 18, B120318

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.

No audible difference in exhaust with m performance power and sound kit.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 12 03 18
Also written: SI B12 03 18, B120318, 12 03 18, SIB-12-03-18, SI B120318
NHTSA ID10142926, 10153743 (revisions)
Document IDs filedB120318
TypeService bulletin
Date (first filed Jan 2018)
Models340i, 430i, 440i, 540i
Model years2016–2018
ChassisF30, F31, F32, F33, F34, F36, G30, G31
EnginesB46/B48, B58
Component (NHTSA)Engine And Engine Cooling › Exhaust System

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.

Related bulletins

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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.

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