The 5.9L Cummins diesel engine was made from 1989 through 2007, when it was replaced by the more eco and emission friendly 6.7L. Cummins began by making a 12V version, sometimes known as a 6BT, then in 1998 phased out that model for the new redesigned 24 valve 5.9L ISB.

The 12 valve 5.9L is a favorite engine among Dodge Ram owners and can be found in a variety of applications including, light and medium duty trucks, agricultural equipment, and construction machinery. The engine was popular because it could generate nearly double the torque at low speeds, which increased the fuel economy. Compared to the alternative V-8 model this was a huge upgrade.

5.9L 12v Cummins Specs

To download your own version of this PDF click the link below:

5.9 12v spec sheet

 

Production Years: 1989 – 1998
Configuration: Inline 6 cylinder
Displacement: 359 cubic inches, 5.9 liters
Bore x Stroke: 4.02″ x 4.72″
Cylinder Head Material: Cast iron
Engine Block Material: Cast iron
Firing Order: 1-5-3-6-2-4
Compression Ratio: 17.0 : 1
Injection: Direct Injection
• Bosch VE44 rotary injection pump (1989-1993)
• Bosch P7100 injection pump (1994-1998)
Aspiration: Holset turbocharger, intercooler introduced mid-1991 model year
Valvetrain: OHV, 2 valves per cylinder, solid lifter camshaft
Valve Lash (Clearance): Exhaust Valves: 0.020″ (must be checked with engine cold)
Intake Valves: 0.010″ (must be checked with engine cold)
Weight: Approx. 1,100 lbs dry
Oil Capacity: 12 quarts
Governed Speed: 2,700 rpm
Horsepower: 160 – 215 HP @ 2,500 rpm
Torque: 400 – 440 lb-ft @ 1,600 rpm

 

12v Cummins Dimensions

Length Width Height
40.0″ 24.9″ 37.9″

 

12v Cummins Horsepower & Torque by Model Year

Note – power ratings only applicable to Dodge pickup applications.

Model Year Horsepower Torque
1989 – 1993 160 hp @ 2,500 rpm 400 lb-ft @ 1,600 rpm
1994 – 1995 • 160 hp @ 2,500 rpm (auto trans)
• 175 hp @ 2,600 rpm (manual trans)
• 400 lb-ft @ 1,500 rpm (auto trans)
• 420 lb-ft @ 1,500 rpm (manual trans)
1996 – 1998 • 180 hp @ 2,500 rpm (auto trans)
• 215 hp @ 2,600 rpm (manual trans)
• 420 lb-ft @ 1,500 rpm (auto trans)
• 440 lb-ft @ 1,500 rpm (manual trans)

 

Diesel Nation has the 5.9L 12 valve available now. It is on shelf and ready to ship. Check out the following pages for more information, or simply give us a call at 1-800-349-0355!

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