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MP®8

  • power
  • 415 – 505
  • hp max
  • torque
  • 1,650 – 1,900
  • lb-ft
  • displacement
  • 13
  • liters

Higher standards.
Lower emissions.

Purposefully designed for power and fuel economy, the MP®8 engine delivers horsepower and torque across a wide operating range to outperform on heavy-duty vocational and highway workloads.

Efficient integration

As part of our legendary integrated powertrain, all our MP engines work seamlessly with Mack axles and transmissions for improved efficiency, increased uptime and lower operating costs over the lifetime of your truck.

Intake throttle

MP Series engines are equipped with intake throttles to improve heat management. They help increase the exhaust gas temperature at idle and low load, increasing the efficiency of the exhaust aftertreatment.

Turbo compounding

MP engines feature a turbine to extract energy from exhaust that would otherwise be lost as heat. By converting exhaust energy into additional torque on the crankshaft, it improves efficiency and reduces emissions.

Two-speed coolant pump

The two-speed coolant pump reduces parasitic loss by delivering the right amount of cooling capacity when maximum cooling isn’t required, for an extra 0.5 to 0.6 percent in fuel economy.

The next evolution in piston design

Our patented wave piston design features six steel waves forged into the piston crown to optimize fuel injection. By redirecting flames in the combustion chamber, we utilize all available oxygen for a 2% improvement in fuel economy and 90% reduction in soot.

  • Standard piston combustion efficiency
  • Mack® Wave piston combustion efficiency

Common rail fuel system

This direct injection system delivers ultra-precise control over fuel injection pressure, timing and volume. The result is more power and efficiency, with less engine noise. Save fuel, gain power and lower emissions.

Factory-installed dual PTO

The available factory-installed dual PTO allows customers to run applications that require more power without sacrificing the performance of the truck.

Efficiency over everything.

Even distribution of power

MP®8 delivers consistent power and torque across a wide operating range that can be tuned to your needs for the right mix of power and high fuel efficiency.

Serious weight savings

The MP®8 weighs 88 pounds less than the previous version, which means more payload per trip day in and day out — plus better operational efficiency and more revenue.

Smaller carbon footprint

Our latest MP engines are specially designed to exceed EPA standards. They reduce CO2 gas emissions, making our trucks some of the cleanest and most fuel-efficient on the road.

Engine specs

#id-4

      

TYPE

Direct Injection Diesel

NUMBER OF CYLINDERS

6, In-Line

BORE & STROKE

5.16" x 6.22"
[131mm x 158mm]

DISPLACEMENT

780 [13L]

COMPRESSION RATIO

16:1

FIRING ORDER

1-5-3-6-2-4

TORQUE RISE

89%

CLUTCH ENGAGEMENT

1215 lb-ft [1647 N•m]
@ 800 RPM

IDLE SPEEDS

Low: 600 RPM Adjustable
High: 2100 RPM

ENGINE BRAKE RETARDING POWER

500 HP [372 kW]
@ 2100 RPM

DRY WEIGHT (APPROX)

2597 lbs [1177 kg]

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