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Service bulletin WB11-50

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 id10043979
Published by NHTSA2012-05-03
Manufacturer's numberWB11-50
Manufacturer's date2011-02-01
NHTSA componentFUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

NHTSA's summary

VOLVO: AFTERTREATMENT HYDROCARBON INJECTOR (AHI) FUEL LINE FITTINGS- PROPER TIGHTENING VERIFICATION. *JS

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

Fuel system, Fuel hoses and lines

Vehicles listed
VOLVO BUS 97002009 to 2010

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