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Mack E7 Remanufactured Diesel Engine

Mack E7 Remanufactured Diesel Engine


We offer a variety of both, over the road truck and industrial replacement engines for the Mack E7. Our remanufactured Mack E7 engines (Mechanical, ASET, ETech) come as a 3/4 long block and are not running trim condition. Our remanufacturing process strips the core down to the bare block whereas the camshaft, crankshaft, engine block, connecting rods and cylinder head are all built back to original OEM spec. The long block is then finished with new aftermarket gaskets, liners, bearings, pistons and rings.

Mack E7 Remaufactured Long Block Engine Includes:

  • Reman Engine Block
  • Reman Cylinder Head
  • New Pistons
  • Reman Connecting Rods
  • Reman Camshaft and Lifters
  • Reman Crankshaft
  • Intermediate Cover
  • Timed Front Gear Group
  • Includes gaskets, liners, rings and ancillary components
  • Fuel Pumps, Turbos, Injectors, Manifolds, Pan are available for additional purchase
  • 1 Year Parts and Labor Warranty (Unlimited Hours or Miles)
  • Extended Warranties Available
  • NOTE: Core Charge is applied after sale


Common Configurations: E7 Mechanical, ASET – 5238, 8045, ETECH – 5227, 5228, 8036,

Mack E7 Specs:

  • Displacement – 12.0 L Displacement
  • Cylinders – 6
  • Type- Mechanical, Electric (Later E-Tech Models)
  • Combustion – Direct Injected
  • Horsepower – 250-460 HP 1700-1800 RPM
  • Max Torque – 975-1660 ft-lbs @1200 RPM
  • Optimal Running Speed – 1400-1800 RPM
  • Bore & Stroke – 4.87 x 6.5 in (125 x 147mm)
  • Compression Ratio: 15:3:1 greater than 375 HP
  • Aspiration – Air to Air Cooled
  • Weight – 2210 lbs approx, dry
  • Oil Capacity – 34 quarts
SKU: BBENG50 Categories: ,
You’ve come to the right place for all of your heavy duty diesel engine needs. We here at Big Bear Engine Company are old school machine shop guys that know the value of your time whether it be out in the field for an industrial job or at play with an off-road engine swap. We are old school machine shop guys and guarantee the workmanship of all of our engines including our Mack E7 Remanufactured Diesel Engines.

Availability: In Stock



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