This Western Peterbilt location services the Mack MP7 engine.

The MP7® engine is powerful and lightweight to maximize your payloads and your bottom line. This 11-liter engine has an amazing power-to-weight ratio with a horsepower range from 325 to 405 HP and torque ratings from 1,200 to 1,560 lb.-ft.

This lightweight engine is ideal for weight-sensitive applications, helping you boost payload when used with our Granite® and Pinnacle™ models. The MP7 engine is also well suited for refuse applications and is available in our TerraPro® models.

The MP7® engine is powerful and lightweight to maximize your payloads and your bottom line. This 11-liter engine has an amazing power-to-weight ratio with a horsepower range from 325 to 405 HP and torque ratings from 1,200 to 1,560 lb.-ft.

This lightweight engine is ideal for weight-sensitive applications, helping you boost payload when used with our Granite® and Pinnacle™ models. The MP7 engine is also well suited for refuse applications and is available in our TerraPro® models.

Easy servicing
The MP Engine Series features 35,000-mile service intervals for highway trucks and 450-hour or 15,000-mile oil drain intervals (whichever comes first) for vocational applications. These engines are designed with convenient access points that make servicing a snap.

Single overhead cam
This MP Engine Series uses a robust single overhead camshaft that reduces stress and incorporates an ultra-high-pressure fuel injection system.

Variable Geometry Turbocharger 
The electronically controlled Variable Geometry Turbocharger incorporates the latest technology to control turbo boost at all RPM ranges and engine loads.

Built like a Mack Truck®
The MP Engine Series is designed with fewer parts, including one-piece steel pistons and stronger bearings and cylinder heads, giving operators a true powerplant that’s built to last.

A brake powerful enough to stop a Mack
The Mack PowerLeash™ engine brake provides more braking horsepower through mid-RPM ranges, and weighs 50 pounds less than competitive engine brakes. It’s fully integrated with the MP Engine Series, and with better braking over the entire speed range, PowerLeash delivers the most retarding horsepower ever in a Mack engine brake. Drivers will immediately notice the responsiveness of the near-instantaneous engine braking, giving drivers confidence behind the wheel.

For trucks with the Mack mDRIVE™ automated manual transmission, PowerLeash can be programmed to work with the mDRIVE to automatically downshift to maximize brake-retarding effort.

Maximum performance
Offered in three engine families—Econodyne®, MaxiCruise® and Maxidyne®—the MP Engine Series is tailored to fit your applications. The Econodyne engines are ideal for typical interstate applications where fuel economy is a priority. The MaxiCruise engines perform best on rolling interstates and in on/off road applications. The Maxidyne engines provide high power for low-speed, high-performance and severe-duty conditions, especially in off-road applications.