If you need assistance with selecting the right replacement parts for your engine, please contact our ONLINE SERVICE to get fast customer support.
For us to provide you with the correct information, please have your Cummins Engine Part Number or Engine Serial Number ready, so that we can give you the best price possible along with our expertise.
The 3.9L 4B/4BT/4BTA Cummins is categorized under the B Engine family alongside the 5.9L 6B/6BT/6BTA Cummins diesel engines. The 3.9L is an inline four-cylinder naturally aspirated (4B) or turbodiesel (4BT/4BTA) that was popular for many step van applications, including bread vans and other commercial vehicles. Additionally, it has seen broad usage in agricultural equipment. It has also gained popularity as an engine swap into smaller trucks and SUVs.
4B
The lowest powered, naturally aspirated 3.9L Cummins, the 4B, produces 53 hp (40 kW).[1] This variant is most commonly found in equipment such as generators and wood chippers.
4BT
The 4BT is one of two turbocharged variants of the 3.9L B-Series engine. It contains two valves per cylinder for a total of eight. The most common output of this variant is 105 horsepower.
4BTA
The 4BTA is the updated version of the 4BT, also turbocharged, containing four valves per cylinder for a total of sixteen. The most common output of this variant is 170 horsepower.
Cummins 4BTA3.9 Engine Ratings
Model
Rated Powder/ Speed (HP/KW@RPM)
Peak Torque (Nm@RPM)
4BTA3.9-C80
80HP/60KW@2200
350@1500
4BTA3.9-C100
99HP/74KW@2200
380@1500
4BTA3.9-C110
110HP/82KW@2200
460@1400
4BTA3.9-C125
125HP/93KW@2300
475@1500
4BTA3.9-C130
130HP/97KW@2500
475@1500
Small Tips for Quick Service:
If you need assistance with selecting the right replacement parts for your engine, please contact our ONLINE SERVICE to get fast customer support.
For us to provide you with the correct information, please have your Cummins Engine Part Number or Engine Serial Number ready, so that we can give you the best price possible along with our expertise.
The 3.9L 4B/4BT/4BTA Cummins is categorized under the B Engine family alongside the 5.9L 6B/6BT/6BTA Cummins diesel engines. The 3.9L is an inline four-cylinder naturally aspirated (4B) or turbodiesel (4BT/4BTA) that was popular for many step van applications, including bread vans and other commercial vehicles. Additionally, it has seen broad usage in agricultural equipment. It has also gained popularity as an engine swap into smaller trucks and SUVs.
4B
The lowest powered, naturally aspirated 3.9L Cummins, the 4B, produces 53 hp (40 kW).[1] This variant is most commonly found in equipment such as generators and wood chippers.
4BT
The 4BT is one of two turbocharged variants of the 3.9L B-Series engine. It contains two valves per cylinder for a total of eight. The most common output of this variant is 105 horsepower.
4BTA
The 4BTA is the updated version of the 4BT, also turbocharged, containing four valves per cylinder for a total of sixteen. The most common output of this variant is 170 horsepower.
