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Service bulletin 98-50379-00

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 id10110899
Published by NHTSA2017-08-10
Manufacturer's number98-50379-00
Manufacturer's date2017-06-23
NHTSA componentFUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

NHTSA's summary

To improve the robustness of the doser system, a fuel bypass line has been developed for the Engine Emission System (EES). The 98-50379-00 instruction covers the installation procedure to install the bypass line.

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, Exhaust and emissions, Fuel system

Vehicles listed
CARRIER TRANSICOLD X4 7300
CARRIER TRANSICOLD X4 7500

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