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Cummins 6BTA5.9 Engine Overview

5.9L 5.9L B-Series Cummins

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.

6B

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.

6BT

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.

6BTA

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.

Additional ratings may be available.  Check with Qingbang.