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Service bulletin PI-0745

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 id10042124
Published by NHTSA2011-11-28
Manufacturer's numberPI-0745
Manufacturer's date2011-10-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

MACK TRUCK: ALL AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) COOLANT HOSES ON LEU AND MRU TRUCKS HAVE AN AVAILABLE CAMPAIGN FOR REPLACEMENT. NO 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

Engine, Exhaust and emissions, Cooling system

Vehicles listed
MACK LEU2010 to 2012
MACK MRU2010 to 2012

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