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JSJ DIESEL SALES

South Florida's #1 Truck Diesel Engine Dealer!

We Sell:  Good Used / Surplus / New / Reman / Rebuilt
Diesel Truck Engines!

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Mack MP8 415 Engines
Diesel Truck Engines

MP8 (≈13L) tuned to ~415 HP—broad torque curve for highway or heavy vocational applications.

  • Rating ≈415 HP (verify by ECU snapshot)
  • Wave-piston and VGT across generations
  • Later SCR systems improve fuel economy

Buyer’s Notes (What to Look For)

  • Check turbo vane actuation and demanded boost
  • Coolant quality and evidence of electrolysis
  • Borescope high-mile units for scoring/carbon

Common Service Items

  • NOx/DEF dosing faults on emissions-era units
  • CCV filter service and crankcase pressure
  • Injector trim/cup sealing checks
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Complete List Of All Mack Diesel Truck Engines We Sell