Mack Trucks has identified that certain 2025 model year Mack Medium Duty (MMD) vehicles may have been...
Mack technical service bulletin S4325 202412 for 2025 Mack MD.
- Bulletin number
- S4325 202412
- Component
- Engine
- Summary
- Mack Trucks has identified that certain 2025 model year Mack Medium Duty (MMD) vehicles may have been assembled with insufficient torque on the fan hub retaining hardware. To address this issue and maintain Mack's high-quality standards, please follow the instructions below to properly retorque the fan hub retaining hardware.
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