Call us

Cummins 4B Long Block Diesel Engine

Cummins 4B Long Block Diesel Engine


Cummins 4B Long Block Diesel Engine:

The 4B Long Blocks come either setup for the Inline “A” Pump, Inline “P” Pump or VE/VP Rotary Fuel Pump Options. Note Front Cover and Gear Housings are different on 4B Long Blocks based upon fuel system installed.

Parts List

• New Cylinder Block
• New Cylinder Head
• New Crankshaft
• New Camshaft
• New Followers/Lifters
• New Pistons
• New Liners
• New Rings
• New Connecting Rods
• New Intermediate Cover
• New Timed Front Gear Group
• New Oil Pump
• New Oil Cooler is Installed or Ships Separate
• New Oil Pan
• Long Block is (3/4 Replacement Engine)

SKU: BBENG1 Category:
Weight 520 lbs

Inline 4 Cylinder (3.9 L)


3.9 Liters, 239 cu in


105 HP @ 2300 RPM


265 ft/lbs @ 1600 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 machine shop guys and guarantee the workmanship of all of our parts including: Cummins 4B Long Block Diesel Engine

Availability: In Stock



Need Help Researching an Engine Swap?

Get our FREE 10-Page Buyer's Guide

    I am looking for an