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Service bulletin TSB180139-111120

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 id10169288
Published by NHTSA2019-12-16
Manufacturer's numberTSB180139-111120
Manufacturer's date2019-11-11
NHTSA componentFUEL SYSTEM, DIESEL

NHTSA's summary

This Techical Service Bulletin describes the verification and resolution of external aftertreatment diesel exhaust fluid leaks at aftertreatment diesel exhaust fluid pump filter housing vent. A hard interference between the diesel exhaust fluid dosing unit filter, freeze membrane, and filter housing can cause the freeze membrane to tear and allow aftertreatment diesel exhaust fluid to leak into the filter housing and leak out the filter housing vent. 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

Fuel system

Vehicles listed
CUMMINS B6.7
CUMMINS L9
CUMMINS QSK
CUMMINS QSK50 DUAL FUEL ENGINE
CUMMINS X12
CUMMINS X15

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