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Service bulletin 21V506

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 id10202750
Published by NHTSA2021-11-01
Manufacturer's number21V506
Manufacturer's date2021-08-24
NHTSA componentENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL:DELIVERY

NHTSA's summary

Daimler Trucks North America has decided that a defect relating to motor vehicle safety exists in specific motorhomes built on Freightliner chassis (NHTSA #21V 326) based on Cummins recall (NHTSA # 21E 032). In response, Newmar Corporation is issuing recall NHTSA # 21V 506 and TC # 2021-427. On certain motorhomes, as described in Cummins recall 21E-032, the fuel rail assembly on the engine may develop leaks, which may result in an undetected prolonged diesel fuel spray. A leak involving spraying/misting fuel in the presence of an ignition source may increase the risk of fire.

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, Fuel system

Vehicles listed
NEWMAR DUTCH STAR2017 to 2021
NEWMAR MOUNTAIN AIRE2017 to 2019
NEWMAR NEW AIRE2020 to 2021
NEWMAR VENTANA2017 to 2021

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