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Service bulletin P-1673

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 id10027910
Published by NHTSA2009-02-20
Manufacturer's numberP-1673
Manufacturer's date2008-11-14
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

MACK TRUCK: UNIT INJECTOR, INLET AND EXHAUST ROCKER ARMS, COMBUSTION SEALING WASHER AND UNIT INJECTOR YOKE REPLACEMENT. MODEL AND 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

Engine, Equipment and accessories, Labels and manuals

Vehicles listed
MACK MACK

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