# Service bulletin C2118B

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: 10175183
- Published by NHTSA: 2020\-05\-18
- Manufacturer's number: C2118B
- Manufacturer's date: 2020\-04\-07
- NHTSA component: EQUIPMENT; ENGINE

## NHTSA's summary

This field action authorizes certified repair locations to upfit certain ISB, ISC, and ISL CM2250 engines with an improved SCR Catalyst. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175183-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175183-9999.pdf)

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

## Components

Engine, Equipment and accessories

## Vehicles listed

- CUMMINS ISB6.7
- CUMMINS ISC
- CUMMINS ISL

JSON: [/v1/bulletins/10175183](/v1/bulletins/10175183)

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