---
title: "ALLISON TRANSMISSION, INC B400 SERIES TRANSMISSION - Recall 23E079000 — NHTSA record 248170 | Is It on Recall"
description: "Allison Transmission, Inc. (ATI) is recalling certain models B3400xFE_R and B400R, with part numbers B3400xFE_R and B400R. The transmission yoke may separate, r"
url: https://isitonrecall.com/recall/nhtsa-248170-allison-transmission-inc-b400-series-transmission-recall-23e079000/
updated: 2026-10-01
site: "Is It on Recall"
language: en
---

[Recall archive](https://isitonrecall.com/archives/) / NHTSA

# ALLISON TRANSMISSION, INC B400 SERIES TRANSMISSION - Recall 23E079000 — NHTSA record 248170

Published notice; closure not supplied

A campaign record does not say whether this individual vehicle has received the remedy. Check the VIN with NHTSA or the manufacturer.

Source date Oct 11, 2023. Retrieved Oct 1, 2026. Last updated Oct 1, 2026.

Archive changed Oct 1, 2026. USDA FSIS records are unavailable; [check FSIS directly](https://www.fsis.usda.gov/recalls). [Source coverage and dates](https://isitonrecall.com/sources/).

## What the record says

- **Product**: ALLISON TRANSMISSION, INC B400 SERIES TRANSMISSION - Recall 23E079000
- **Reason**: Allison Transmission, Inc. (ATI) is recalling certain models B3400xFE\_R and B400R, with part numbers B3400xFE\_R and B400R. The transmission yoke may separate, resulting in driveshaft separation and a sudden loss of drive power. A sudden loss of drive power can increase the risk of a crash. Additionally, a disabled bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers.
- **Classification**: Not supplied
- **Recalling firm**: Allison Transmission, Inc.
- **Quantity**: 8498
- **Agency-reported status**: Published safety recall
- **Source record identifier**: 248170

[Open the official record](https://api.nhtsa.gov/recalls/campaignNumber?campaignNumber=23E079000)

## Lot and product identifiers

| Label field | Details supplied by the agency |
| --- | --- |
| Lot, code or applicability | Product applicability: ALLISON TRANSMISSION, INC B400 SERIES TRANSMISSION. Check the model identifiers and, for a vehicle, the VIN on the official recall site. |

Match all identifying details in the current notice. A brand name alone is not enough.

## Distribution

Not supplied

No US distribution state could be established from this record. Check the official notice.

## Dates in the source

- **Report received**: Oct 11, 2023
- **Owner notification**: Dec 9, 2023
- **Record created**: Oct 12, 2023

FDA company pages use the listing date; enforcement records use initiation dates; CPSC uses recall date; NHTSA uses report-received date. These dates are not interchangeable.

## What to do next

Dealers will inspect the output yoke bolts, and if necessary, tighten loose output yoke bolts, free of charge. Owner notification letters were mailed December 9, 2023. Owners may contact ATI customer service at 1-317-242-5000. ATI's number for this recall is 2023FA04.

[Read the current instructions](https://api.nhtsa.gov/recalls/campaignNumber?campaignNumber=23E079000)

Use [NHTSA's VIN check](https://www.nhtsa.gov/recalls) to check an individual vehicle and its remedy status.

## Related records

[Vehicles records](https://isitonrecall.com/product/cars/) [Vehicles and equipment records](https://isitonrecall.com/category/vehicles/) [Allison Transmission, Inc. records](https://isitonrecall.com/brand/allison-transmission-inc/)