Mack replacement engines & transmissions
Mack Truck Engines & Transmissions
Mack trucks are typically built with Mack MP-series engines and, in newer trucks, the mDRIVE automated manual. Send us your VIN and unit details and we search supplier sources for a matching used replacement.
Engine families
Engines to check
Transmission families
Transmissions to check
Factory options varied by model and year. Links are starting points, not a fitment guarantee — we confirm against your VIN and serial numbers.
01Engine families found in Mack trucks
Modern Mack highway and vocational trucks commonly run Mack MP7, MP8 or MP10 engines. Older Macks used earlier Mack engine families. Your VIN and engine tag confirm which engine your truck was built with.
02Transmissions
Many newer Macks use the mDRIVE automated manual, with mDRIVE HD versions for vocational work. Macks have also been built with Eaton Fuller manual transmissions and Mack's own manual transmissions, and some vocational models use Allison automatics.
03Electronics and programming
Mack engines and the mDRIVE are integrated with the truck's electronic control units. A replacement unit often needs programming with Mack dealer tools to communicate with the rest of the truck. Matching serial numbers to your VIN helps keep that straightforward.
04Aftertreatment, harness and cooling
MP-series engines from different emissions periods can use different aftertreatment parts, sensors and harnesses. Vocational Macks may also have PTO and cooling differences. Send the engine serial and tell us how the truck is used.
05What to have ready
Before you call, gather:
- Full VIN
- Engine model and serial number
- Transmission label or tag details if needed
- Truck model and year
- Whether the truck uses a PTO
FAQ
Mack engine & transmission questions
Which engine does my Mack have?
Newer Macks commonly have an MP7, MP8 or MP10. Check the engine tag or the build data tied to your VIN to be sure.
Does a replacement MP8 need programming?
Usually some programming is needed so the engine communicates with the truck's other control units. A Mack dealer or equipped shop can confirm.
Can you find an mDRIVE for my Anthem or Granite?
Yes. Send the transmission label details and VIN and we search supplier sources for a matching unit.
Are Mack and Volvo engines interchangeable?
They are related through the Volvo Group, but they are not simple drop-in replacements for each other. We search for the engine that matches your truck.
Are you affiliated with Mack?
No. We are an independent sourcing company. We search supplier sources nationwide and confirm availability and freight on your quote.
Other trucks
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Ready when you are
Replacing the engine or transmission in your Mack? Start with the VIN.
Have your engine serial number, CPL and VIN handy. If you don't, we'll help you find them.
Commercial-Engines.com is an independent supplier of used commercial truck engines and transmissions. Manufacturer names, model names and part numbers are used for identification only and do not imply affiliation with, or endorsement by, any manufacturer. Read the full disclaimer.