2025 Cummins QSB 4.5 Diesel Engine (Front Gear Train) - 180 HP

Brand New Cummins QSB 4.5 L Long Block Engine - This engine is a 2025 Surplus Component Unit built with original castings and mostly new parts. Component Builds consist of roughly 90% OEM Parts, 10% Aftermarket and limited reman parts when available.

This engine is not considered a traditional full reman/used but rather built with 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...
• Engine is Front Gear Train Application
• Fuel System Configuration are step up for either a Rotary Delphi, VE, or VP Pumps
• Outright Pricing: No Core Charge
• Standard 1 Year Parts Replacement Warranty
• Optional 1 and 2 Year Parts/Labor Warranties Available
  

Specs:

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

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 Engines.