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Service bulletin WB18-X-001A

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 id10197332
Published by NHTSA2021-06-14
Manufacturer's numberWB18-X-001A
Manufacturer's date2021-05-21
NHTSA componentFUEL SYSTEM, GASOLINE

NHTSA's summary

THIS BULLETIN PROVIDES SHIPPING PREPARATION AND ADMINISTRATION INSTRUCTINOS WITH REGARD TO PARTS RETURN REQUESTS FROM THE ISUZU TECHNICAL ASSITANCE LINE (TAL). THE TAL PARTS RETURN REQUEST SYTSEM IS USED BY ISUZU COMMERCIAL TRUCK OF AMERICA, INC. (ITCA) TO OBTAIN VEHICLE PARTS THAT HAVE BEEN REPLACED BY ISUZU DEALERSHIPS OR ISUZU ENGINE CERTIFIED SERVICE CENTERS (EXCLUDING CANADA) SO THAT ISUZU MAY STUDY AN ANALYZE THE PARTS AND THE REASONS FOR THEIR REPLACEMENT. TAL MAY ISSUE A PART RETURN REQUEST RELATED TO ANY TAL CASE CREATED BY A DEALER. PROMPT RETURN OF THESE REQUESTED PARTS WILL FACILITATE QUICKER ENGINEERING ANALYSIS AND PRODUCT IMPROVEMENT.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Fuel system

Vehicles listed
ISUZU F SERIES
ISUZU N SERIES

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