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Service bulletin C1555C

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 id10089909
Published by NHTSA2017-01-30
Manufacturer's numberC1555C
Manufacturer's date2014-09-23
NHTSA componentFUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

NHTSA's summary

THIS CAMPAIGN ADDRESSES HIGH PRESSURE FUEL PUMP CERAMIC PLUNGER FRACTURES IN CERTAIN ENGINES. THIS ACTION AUTHORIZES CERTIFIED REPAIR LOCATIONS TO REPLACE THE BARRELS, PLUNGERS AND TAPPETS IN THE HIGH PRESSURE FUEL PUMP HEAD. THIS IS A REVISION TO A PREVIOUS COMMUNICATION.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Fuel system, Fuel pump

Vehicles listed
CUMMINS ISX15

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