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Service bulletin 98T1927

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 id603454
Published by NHTSA1999-02-22
Manufacturer's number98T1927
Manufacturer's date1998-07-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

INTERNAL IMPROVEMENTS OF THE OIL AND BOOST PRESSURE SENSORS. *YC

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
CUMMINS M11
CUMMINS N14
CUMMINS QSK

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