---
title: "2025 Mack TerraPro Recall: Loose Steering Gearbox Fasteners"
description: Mack recalls 341 TerraPro trucks from 2025 because steering gearbox
  fasteners may loosen. Dealers will inspect, tighten or replace the fasteners.
author: RecallWire Safety Desk
published: 2026-08-31T00:00:00.000Z
updated: 2026-09-16T00:00:00.000Z
editorial_status: reviewed
canonical_url: https://recallwire.news/articles/safety-recall-26v509000/
sources_checked: 2026-09-16T16:04:33.540Z
article_type: recall
manufacturer: MACK
manufacturers:
  - MACK
models:
  - TERRAPRO (TE)
vehicles:
  - manufacturer: MACK
    model: TERRAPRO (TE)
    years:
      - 2025
campaigns:
  - 26V509000
campaign: 26V509000
affected: 341
source_agency: NHTSA
---

# 2025 Mack TerraPro Recall: Loose Steering Gearbox Fasteners

## Summary

Mack recalls 341 TerraPro trucks from 2025 because steering gearbox fasteners may loosen. Dealers will inspect, tighten or replace the fasteners.

## At a glance

- Manufacturer: MACK
- Vehicle: TERRAPRO (TE)
- NHTSA campaigns: 26V509000
- Potentially affected: 341

> Official recall facts are attributed to NHTSA. The surrounding summary and owner guidance are RecallWire editorial work. A campaign or model match does not confirm an individual vehicle’s recall or repair status; use the [official NHTSA VIN lookup](https://www.nhtsa.gov/recalls).

Mack is recalling 341 model-year 2025 TerraPro trucks because the steering gearbox fasteners may loosen. A loose gearbox can lead to loss of steering and increase crash risk. The NHTSA campaign number is 26V509000, and Mack identifies the recall as SC0497.

## What the recall means for owners

### MACK: TERRAPRO (TE)

Dealers will inspect the steering gearbox fasteners and tighten or replace them as necessary, free of charge. Owner notification letters are expected to be mailed October 5, 2026. The repair description is an inspection-based remedy; it does not mean every truck needs the same replacement parts.

**Official record — checked September 16, 2026**

- **NHTSA recall ID:** 26V509000
- **Vehicles listed:** MACK TERRAPRO (TE) (2025)
- **Potentially affected:** 341
- **Components:** STEERING:CRITICAL FASTENERS; STEERING:GEAR BOX:MOUNTING BRACKET
- **Report received:** August 6, 2026
- **Owner notification:** Owner notification letters expected to be mailed October 5, 2026.
- **Defect:** Mack Trucks, Inc. (Mack) is recalling certain 2025 TerraPro trucks. The steering gearbox fasteners may loosen.
- **Safety consequence:** A loose steering gearbox can result in a loss of steering, increasing the risk of a crash.
- **Remedy:** Dealers will inspect and tighten or replace the fasteners as necessary, free of charge. Owner notification letters are expected to be mailed October 5, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0497.

## What owners should do next

Contact a Mack dealer about the steering gearbox fastener inspection under SC0497. Fleet operators should confirm the recall and repair status for each affected TerraPro VIN.

Use the [official NHTSA recall lookup](https://www.nhtsa.gov/recalls) or contact the manufacturer or an authorized dealer to confirm recall status for your vehicle’s VIN. A matching model and year alone do not establish that a vehicle is included or that its repair is complete.

## Official sources

- [Current NHTSA campaign data for 26V509000](https://api.nhtsa.gov/recalls/campaignNumber?campaignNumber=26V509000), checked September 16, 2026; supports the current facts and notification wording above.
- [Manufacturer Part 573 report submitted Aug 06, 2026](https://static.nhtsa.gov/odi/rcl/2026/RCLRPT-26V509-4076.pdf). The report records the filing at that date; later status updates are attributed to the current campaign data.

## Sources

- [National Highway Traffic Safety Administration. Safety Recall Report: Campaign 26V509000](https://static.nhtsa.gov/odi/rcl/2026/RCLRPT-26V509-4076.pdf). Report received 2026-08-06.

---

Source: RecallWire
Canonical URL: https://recallwire.news/articles/safety-recall-26v509000/