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Service bulletin 9100727

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 id11025637
Published by NHTSA2025-11-19
Manufacturer's number9100727
Manufacturer's date2025-11-10
NHTSA componentENGINE

NHTSA's summary

When installing the new replacement pipe, do not remove or replace the O-ring that comes pre-installed on the new part. This O-ring is factory-fitted and must remain in place to ensure proper sealing and prevent leaks or fitment issues.

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
RAM 25002024
RAM 35002024

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

Other bulletins for the same vehicles and component
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1132922026-07-18. Service bulletin. INJECTOR - FUEL
1129062026-07-02. Service bulletin. BEARING - CRANKSHAFT THRUST and KIT
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9100692 Rev 12026-05-28. Service bulletin. On Cummins diesel applications that are for 2019 and newer the bpro part 1BP00507AB can on occasions create a check engine light. In these situations, it is recommended to use the appropriate Mopar air filter originally installed on the vehicle. The "AC" level of the part is in development to resolve this issue. 1BP00507AB should still be usable for 2018 and older Model year Cummins engines.
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