# Service bulletin ATC2163

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.

- Type: Service bulletin
- NHTSA id: 10168148
- Published by NHTSA: 2019\-11\-25
- Manufacturer's number: ATC2163
- Manufacturer's date: 2019\-10\-08
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This Account Team Coverage is being issued to address life cylinder liner O\-ring failures \(PN 3696801\) in certain X12 CM2350 X119B engines. Normal temperature at the liner may result in liner O\-ring deterioration causing an external coolant leak. This field action provides authorization for certified repair locations to replace the cylinder liner O\-rings with new O\-rings that have increased temperature capability and margin for potential longer\-term durability.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10168148-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10168148-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- CUMMINS X12

JSON: [/v1/bulletins/10168148](/v1/bulletins/10168148)

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