# Service bulletin SB 458

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: 10138250
- Published by NHTSA: 2018\-05\-21
- Manufacturer's number: SB 458
- Manufacturer's date: 2018\-04\-24
- NHTSA component: ENGINE AND ENGINE COOLING; EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:PLUMBING:POTABLE WATER:STORAGE TANK

## NHTSA's summary

This Service Bulletin informs affected owners of model year 2017\-2018 J4500 model coaches that the potential may exist for engine damage to occur if the lavatory tank is overfilled. If this occurs, it is possible for the water to overflow into the engine air filter. This Service Bulletin informs affected vehicle owners that MCI is providing the parts and labor to perform a retrofit at no cost to owners.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10138250-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10138250-0001.pdf)

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

## Components

Engine, Equipment and accessories

## Vehicles listed

- 2017 to 2018 MCI J4500

JSON: [/v1/bulletins/10138250](/v1/bulletins/10138250)

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