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Service bulletin 9805

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 id607304
Published by NHTSA1999-09-17
Manufacturer's number9805
Manufacturer's date1998-01-30
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

INFORMATION ON LUBRICATING OIL PUMPS FOR VARIOUS ENGINES. *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
WESTERN STAR WESTERN STAR

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