WenmarOpen by Wenmar Pro

Service bulletin 94M12

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 id39359
Published by NHTSA1995-11-01
Manufacturer's number94M12
Manufacturer's date1995-03-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

SERVICE CAMPAIGN 94M-12 - DETROIT DIESEL HAS DETERMINED THAT CERTAIN 1994 DETROIT DIESEL SERIES 50 AND 60 ENGINES WILL REQUIRE THE OIL FILLER TO BE REPLACED TO PREVENT AN INTERFERENCE CONDITION WITH THE ALTERNATOR BELT. TO CORRECT THIS CONDITION, DEALERS WILL MAKE THE NECESSARY MODIFICATIONS. *TW

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

Engine

Vehicles listed
DETROIT DIESEL DETROIT1994 to 1995

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