2025 Mack Anthem (an) recall: engine
⚠️ What's wrong
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 fix
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.
Is the fix free? Yes. Safety recall repairs are free at any authorized dealer under federal law, including parts and labor. (Vehicles more than 15 years old when the recall was announced can be excluded, but most manufacturers still fix them.)
- NHTSA campaign
- 25V256000
- Manufacturer recall #
- SC0477
- Manufacturer
- Mack Trucks, Inc.
- Vehicles affected
- 3
- Component
- ENGINE AND ENGINE COOLING:ENGINE:DIESEL
- Owner phone
- 1-800-866-1177
- NHTSA hotline
- 1-888-327-4236
- Owner letters mailed
- Apr 24, 2025
- Built
- Sep 24, 2024 – Oct 24, 2024
- Recall started by
- MFR
- Notes
- Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 888-327-4236 (TTY 888-275-9171) or go to nhtsa.gov.