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Service bulletin P-1653

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 id10025853
Published by NHTSA2008-09-10
Manufacturer's numberP-1653
Manufacturer's date2008-07-30
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES; ENGINE AND ENGINE COOLING

NHTSA's summary

MACK TRUCK: COOLING SYSTEM SURGE TANK AND TRANSMISSION OIL COOLER SUPPLY PIPE, REPLACEMENT FOR MRU LEU MODELS WITH AUTOMATIC TRANSMISSION. *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, Transmission and driveline, Automatic transmission

Vehicles listed
MACK LEU2007
MACK MRU2007

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