Cummins 6BT5.9 Engine Overview
5.9L 5.9L B-Series Cummins
Configuration In-line, 6 cylinder, 4-stroke diesel
Aspiration Turbocharged (6BT) | Turbocharged/Aftercooled (6BTA)
Displacement 5.9 L (359 in3)
Bore & Stroke 102 x 120 mm (4.02 x 4.75 in)
Fuel System Inline Injection Pump
Horsepower 130-205hp
Application Commercial, Industrial, Marine
Production: 1984–1998
Camshaft drive: Gear driven
Crankshaft: Forged steel, 7 main bearings
System capacity with filter: 3.5 US gal (13 l; 2.9 imp gal)
Cooling system: 6 US gal (23 l; 5.0 imp gal) coolant
System capacity incl heater: 6.5 US gal (25 l; 5.4 imp gal) coolant
Power output: 160 hp - 230 hp (172 kW) at 2500 rpm
Torque: 400 - 440 lb⋅ft (597 N⋅m) at 1600 rpm
Compression ratio: 17.5:1
The 5.9L Cummins, also known as the "12-Valve" Cummins was the first member of the Cummins B-Series to be used in a light truck vehicle. The 6BT used Bosch fuel systems, injector, and VE rotary pump and P7100 inline injection pumps. Some early 6BTs were supplied with CAV rotary pumps instead, before the Bosch system became the sole standard. This engine started life in 1984 designed as an agricultural engine, for use in Case agricultural equipment.
After 1989, the 6BT engine was used in light duty, medium duty and select heavy duty trucks and buses. The 6BT engine has recently become very popular for use in repowering various vehicles, in the UK they have proven very popular in the Land Rover community, commonly known as the ‘good’ conversion.
Cummins 6B Engine
The 6B is the naturally aspirated version of the 6BT with the power output of between 150 to 173 hp and with the compression ratio of 19:1. There were no automotive 6B engines.
Cummins 6BT Engine
Appearing in the 1989–1998 Dodge Ram pickup truck, it became a popular alternative to the large gasoline V8 engines normally used in full-size pickup trucks, since it produced torque at low engine RPM, and achieved significantly better fuel mileage. During that time, the Dodge RAM was the only diesel pickup that did not rely on glow plugs for cold weather starting due to indirect fueling.
Additional ratings may be available. Check with Qingbang Online Service.
Cummins 6BT5.9 Engine Ratings
| Model | Rated power output (kW@RPM) | Peaktorque
(Nm@RPM) | Rated power output (HP) |
| 6BT5.9-C125 | 92@2200 | 540@1400 | 123HP |
| 6BT5.9-C130 | 97@2000 | 560@1500 | 130HP |
| 6BTA5.9-C150 | 112@2200 | 655@1500 | 150HP |
| 6BTA5.9-C165 | 123@2200 | 694@1500 | 165HP |
| 6BTA5.9-C170 | 127@2000 | 650@1500 | 170HP |
| 6BTA5.9-C180 | 132@2200 | 750@1300 | 177HP |
| 6BTA5.9-C180 | 132@2500 | 630@1500 | 177HP
|
B-SERIES
Small engines - big possibilities.
Small, light and economical, Cummins B-Series engines include a direct fuel injection for a cleaner, quieter, more fuel-efficient performance and offer outstanding value in terms of installation, simplicity and servicing, with valve clearance checks not required until 2,000 hours twice the industry standard.
All the engines in Cummins B series perform well under severe duty cycles and offer excellent fuel consumption, substantial cooling capability, low noise, low weight, and high power output per liter, for first class reliability.
The B series engine family is intended for multiple applications on and off-highway, light-duty, and medium-duty. In the automotive industry, it is best known for its use in school buses, public service buses in the United Kingdom, and Dodge/Ram pickup trucks.
Since its introduction, three generations of the B series engine have been produced, offered in both inline-four and inline-six configurations in multiple displacements.
