WenmarOpen by Wenmar Pro

Service bulletin SF198A

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 id612130
Published by NHTSA2000-06-06
Manufacturer's numberSF198A
Manufacturer's date2000-01-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

ON SOME MT35 MODEL VEHICLES MANUFACTURED BETWEEN JANUARY 1, 1999 AND NOVEMBER 5, 1999, THE ISOLATORS IN THE ENGINE MOUNTS DISPLACE TOO FAR, ALLOWING THE ENGINE TO CONTACT THE FRAME RAIL TRANSFERRNG ENGINE VIBRATION TO THE FRAME RAIL AND ULTIMATELY TO THE VEHICLE BODY. THE MODIFICATION CONSISTS OF REMOVING AND REPLACING BOTH REAR ENGINE MOUNT ISOLATORS. *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

Engine

Vehicles listed
FREIGHTLINER MT35

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