Mack Trucks, Inc.: Engine and Engine Cooling › Engine › Diesel
Mack Trucks, Inc. reported this defect to federal regulators on Apr 17, 2025 and put the number of vehicles at risk at 3. The repair is free for as long as the recall stands.
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2025 Anthem (AN) vehicles. The idler gear bracket fasteners may have been improperly tightened, allowing the idler gear to detach from the engine.
The risk
A detached idler gear can damage the engine, resulting in a stall and increasing the risk of a crash or injury.
The remedy
Dealers will inspect and replace the turbo compound units as necessary, free of charge. Owner notification letters are expected to be mailed April 24, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0477.
1 model year covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2025 Mack Anthem (an) | 0 | 8 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 25V256000.
Full record for the 2025 Mack Anthem (an) → · Recalls carrying a do-not-drive advisory → · Where this data comes from →