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Service bulletin 557

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 id10003088
Published by NHTSA2003-10-08
Manufacturer's number557
Manufacturer's date2003-08-29
NHTSA componentFUEL SYSTEM, OTHER

NHTSA's summary

AIR IN THE FUEL SYSTEM CAN BE EXPERIENCED ON CERTAIN MODEL CHASSIS. TO ELIMINATE THIS CONDITION, THE STANADYNE MODEL FM1000 WATER SEPARATOR/PRE-FILTER ARRANGEMENT HAS BEEN MADE AVAILABLE TO REPLACE THE EXISTING STANADYNE MODEL FM100 FILTER ASSEMBLY. *TT

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

Vehicles listed
MACK FREEDOM

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