WenmarOpen by Wenmar Pro

Service bulletin IS-12143B

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 id10110678
Published by NHTSA2017-08-04
Manufacturer's numberIS-12143B
Manufacturer's date2013-10-21
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL; EQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

This Instruction Sheet explains how to retrofit the DEF tank left side filler neck on H3 VIP motorhomes with central or small a/c system

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

Engine, Equipment and accessories, Exhaust and emissions, Fuel system, Heating and air conditioning

Vehicles listed
PREVOST H3 VIP2007 to 2008
PREVOST H3-45 VIP2009 to 2010
PREVOST H3-VIP2011 to 2012

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