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Warranty extension T7186 Letter

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)
TypeWarranty extension
NHTSA id11029831
Published by NHTSA2026-03-06
Manufacturer's numberT7186 Letter
Manufacturer's date2026-01-30
Campaign id or software versionT7186
NHTSA componentENGINE

NHTSA's summary

This Owner Notification Letter informs owners of certain B6.7 engines of an extended emissions warranty covering the Aftertreatment Differential Pressure Sensor.

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
CUMMINS B6.7

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