# Service bulletin IK0600001

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: 11024945
- Published by NHTSA: 2025\-11\-05
- Manufacturer's number: IK0600001
- Manufacturer's date: 2025\-10\-16
- NHTSA component: POWER TRAIN

## NHTSA's summary

Some interaxle shafts \(the driveshaft connecting 2 drive axles\) utilise special phasing. This is by design to reduce torsional vibrations. See Dana/Spicer letter here \& Meritor here. Dana DS404 rear axle housing families use offset interaxle driveshaft phasing to reduce torsional vibrations. Depending on the interaxle driveshaft series, the phasing will be different. Vehicles built with 0417LTFXXXX drivelines until 03/23/2009 use 32 degree phasing, while vehicles built with 0417LTGXXXX drivelines from 3/12/2009 to current use 48 degree phasing. There is an overlap of 11 days where either shaft could have been used.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024945-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024945-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2020 to 2024 INTERNATIONAL LT

JSON: [/v1/bulletins/11024945](/v1/bulletins/11024945)

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