Rebuilt Mack Transmissions
Mack Maxitorque ES, mDRIVE and mDRIVE HD transmissions, rebuilt in-house with genuine Mack components and ready to ship.
Mack transmissions are built from tough materials for simple operation, and Mack builds them in the USA. When one needs a rebuild, our in-house specialists remanufacture it with genuine Mack components and our own re-use, rebuild and testing requirements, back to the original factory specs. The aim is the smooth shifting Mack is known for.

Mack transmission models we carry
| Maxitorque ES | Mack's heavy duty manual transmission line |
|---|---|
| mDRIVE | Mack's automated manual transmission |
| mDRIVE HD | The heavy duty version of mDRIVE for vocational and heavy haul work |
Call with your Mack transmission model and serial number and we will locate the right unit. You can also search the store for Maxitorque or mDRIVE units, or browse Mack transmissions.
Rebuilt unit, rebuild service or kits
- Rebuilt unit from stock. Stock units ship the same day, and we ship worldwide.
- Rebuild service. Our in-house specialists in Orlando, Florida rebuild Mack transmissions to the original factory specs.
- Kits and parts. Rebuild kits and overhaul kits for your own shop, covered on our Mack transmission parts page.
We offer a one year, unlimited mileage warranty on new and rebuilt differentials, transmissions, transfer cases and PTOs (see warranty; other warranties are the manufacturer's).
Beyond Mack, we carry heavy duty truck transmissions and repair parts from 5 speed units up to 18 speed Roadrangers. See rebuilt Fuller transmissions and rebuilt Eaton transmissions.
Need a transmission or differential today?
Give us the model and serial tag number, or the ratio off the differential tag. We will find the unit or the part, price it and ship it.