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Service bulletin TSB-100994

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10034653
Published by NHTSA2010-12-15
Manufacturer's numberTSB-100994
Manufacturer's date2010-07-26
NHTSA componentELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

NHTSA's summary

CUMMINS: AIR COMPRESSOR AND 50DN ALTERNATOR OIL SUPPLY FITTING LEAKS. OIL SUPPLY FITTING, PART NUMBER 3945212, FOR CUMMINS AIR COMPRESSORS AND DELCO-REMY ALTERNATORS HAVE BEEN FOUND TO LEAK ON CUMMINS MIDRANGE ENGINES. NO MODEL OR MODEL YEARS LISTED. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Alternator

Vehicles listed
CUMMINS ISB CM2150
CUMMINS ISL CM2150
CUMMINS SIGNATURE

Listing a model year does not mean every vehicle of it is concerned: the document says which.