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Service bulletin ATC2326A

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 id10185696
Published by NHTSA2021-01-25
Manufacturer's numberATC2326A
Manufacturer's date2020-12-08
NHTSA componentEQUIPMENT

NHTSA's summary

This Account Team Coverage is being issued to address heat exchanger main support bracket mounting hardware failures on certain CM2350 L116B engines. This ATC authorizes the replacement of current mounting hardware with grade 10 bolts. This is an update to a previously submitted communication.

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

Equipment and accessories

Vehicles listed
CUMMINS L9

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