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Cummins QSB 4.5 Engine – 180 HP

Cummins QSB 4.5 Engine – 180 HP


Brand New Cummins QSB 4.5 L Long Block Engine – This engine is a 2019 Surplus Unit built with original castings and all new parts.  We offer both front and rear gear train QSB 4.5 L Long Blocks. Built to ESN: 30230999 Front Gear Train, ESN: 22140546 Rear Gear Train.

This engine is not considered reman/used but rather new surplus castings. Why risk an unknown used QSB 4.5 L engine when a new long block will get you up and running again?

Long Block Includes:

  • Engine Block
  • Cylinder Head
  • Camshaft and Lifters
  • Rocker Assemblies
  • Connecting Rods
  • Pistons (120 – 180 HP @2500 RPM)
  • Gear Housing and Front Cover
  • Liners, Rings, Gaskets
  • Rear Sump Oil Pan
  • 3/4 Engine Does not include ECM, Fuel Pump, Injectors, Turbo, Manifolds etc…
  • Engines are available in Front Gear Train and Rear Gear Train Applications
  • Fuel System Configuration is step up for a Rotary Delphi Pump
  • Outright Pricing: No Core Charge


Weight – 705 lbs
Configuration – Inline 4 Cylinder (4.5 L)
Displacement – 4.5 Liters, 275 cu in
Horsepower – 180 HP @2500 RPM
Torque – 305 ft/lb @1500 RPM

SKU: BBENG29 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 parts including: Cummins QSB 4.5 L Long Block Diesel Engine.

Availability: In Stock



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