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Service bulletin SB-329-008

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 id10028550
Published by NHTSA2009-05-08
Manufacturer's numberSB-329-008
Manufacturer's date2009-03-12
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

MACK TRUCKS: A REVISED COUPLING HOSE FOR THE ALLISON AUTOMATIC TRANSMISSION OIL COOLER SUPPLY PIPE TO THERMOSTAT HOUSING CONNECTION WAS IMPLEMENTED INTO PRODUCTION ON MRU AND LEU MODEL CHASSIS. MODEL YEARS UNKNOWN. *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

Transmission and driveline, Automatic transmission

Vehicles listed
MACK LEU2007 to 2008
MACK MRU2007 to 2008

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