Cummins 4BT
Parts and Accessories

One of the coolest engines ever produced is the Cummins 4BT, in all of its variations.  You may be wondering why we would be touting a teeny 3.9L, four cylinder engine as one of the coolest engines.  Well, that’s simple.  This little diesel can be swapped into numerous vehicles that simply don’t have the sheer engine bay space for any of the traditional, larger engines, let alone the weight.  Further, the earlier mechanically controlled engines could be modified to produce impressive horsepower numbers, while still achieving over 40 miles per gallon.

In one of our in-house builds, we took a 2009 Jeep JK four door and slapped a 4BT in it, along with a host of other off road oriented upgrades and made one of the coolest JK’s on the planet (at least we think so).  That Jeep took us all over the country on some of the toughest trails you can imagine, and still served as a vehicle that could easily be daily driven, turning heads everywhere it went.  Its hard to not look twice when you hear a Cummins rattling under the hood of a Jeep rolling on 40” tires!

Cummins 4BT Specifications:

  • Engine Name:Cummins B3.9L/4BT
  • Applications:Chevrolet Step Vans, Commercial applications
  • Configuration:Inline 4-cylinder diesel
  • Displacement:3.9L, 239 cubic inches
  • Bore:4.02 inches
  • Stroke:4.72 inches 
  • Compression Ratio:17.5:1
  • Aspiration:Turbocharged, non-intercooled
  • Engine Weight:745 - 782 lbs
  • Oil Capacity:10 quarts
  • Horsepower:105 hp @ 2,300 RPM *
  • Torque:265 lb-ft @ 1,600 RPM *  
ARB 37 Quart Fridge Freezer 10800352
DPP Price: $806.55
ARB 50 Quart Fridge Freezer 10800472
DPP Price: $877.80
ARB 63 Quart Fridge Freezer 10800602
DPP Price: $1,037.40
ARB 82 Quart Fridge Freezer 10800782
DPP Price: $1,229.30
ARP 247-4206 Diesel Head Stud Kit 4BT Cummins
DPP Price: $332.31
ARP CA625 Diesel Head Stud Kit Cummins 4BT 247-4205 247-4207
DPP Price: $867.39
Fleetguard 2 Micron Fuel Filter FF5320
DPP Price: $16.29
Fleetguard Fuel/Water Separator FS1001
DPP Price: $23.10
Fleetguard Fuel/Water Separator FS1212
DPP Price: $19.95