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Service bulletin E318

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 id11009718
Published by NHTSA2024-11-04
Manufacturer's numberE318
Manufacturer's date2024-10-08
Campaign id or software versionE318 EPA21 Pack 2 Injectors
NHTSA componentENGINE

NHTSA's summary

EPA21 Pack 2 Injectors Newly designed fuel injectors are available for EPA2021 compliant PACCAR MX-series engines to optimize engine performance. Injectors must be replaced as a full set (6 injectors) and associated software must be updated at the same time.

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

Vehicles listed
PACCAR MX-112020 to 2021
PACCAR MX-132020 to 2021

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