# Service bulletin 98\-034

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: 11027064
- Published by NHTSA: 2026\-01\-06
- Manufacturer's number: 98\-034
- Manufacturer's date: 2025\-12\-03
- Campaign id or software version: 98\-034
- NHTSA component: ELECTRICAL SYSTEM; ENGINE

## NHTSA's summary

A new Level 1 required MX\-11 and MX\-13 Oil Pressure Switch Breakout Harness is now available for order.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11027064-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11027064-9999.pdf)

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

## Components

Electrical system, Engine

## Vehicles listed

- 2020 to 2021 PACCAR MX\-11
- 2020 to 2021 PACCAR MX\-13

JSON: [/v1/bulletins/11027064](/v1/bulletins/11027064)

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