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Service bulletin SB-561-021

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 id10037020
Published by NHTSA2011-04-28
Manufacturer's numberSB-561-021
Manufacturer's date2010-10-01
NHTSA componentFUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:MOUNTING

NHTSA's summary

MACK TRUCKS: A NEW COOLING TANK REQUIRES RE-ROUTING OF THE COMPRESSOR DISCHARGE LINE. *RM ALL MODELS ILO. UPDATED 5/5/11. *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

Fuel system, Fuel tank

Vehicles listed
MACK CXN2002 to 2007

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