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Service bulletin SB423001

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 id626156
Published by NHTSA2001-12-13
Manufacturer's numberSB423001
Manufacturer's date2001-09-28
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

SUBJECT REGARDING O-RING SEAL - ARVINMERITOR FF-981 NON-DRIVING FRONT AXLE EQUIPPED WITH UNITIZED WHEEL HUBS. *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

Transmission and driveline, Axle

Vehicles listed
MACK MACK

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