2003-2007 5.9L Cummins
Cummins’ last 5.9L boasts high-pressure common-rail injection and a stronger block.
Engine Name: 5.9L ISB Cummins (Common-Rail)
Production Plant: Cummins Midrange Engine Plant (CMEP), Walesboro, Indiana
Configuration: Inline-six (I-6)
Bore: 4.02-inch
Stroke: 4.72-inch
Displacement: 359 ci (5.9L)
Compression Ratio: 17.2:1
Firing Order: 1-5-3-6-2-4
Block: Cast-iron, deep-skirt, parent bore with stiffener plate
Head: Cast-iron, 24-valve, crossflow style with six 12mm diameter head bolts per cylinder and one-piece valve cover with rocker box, ’04.5-’07 versions featured Inconel exhaust valves and cobalt-stellite-treated exhaust valve seats
Crankshaft: Forged-steel
Connecting Rods: Forged-steel, cracked cap
Pistons: Cast-aluminum with fuel bowl redesign for ’04.5 to accommodate tighter spray angle of the revised fuel injectors
Valvetrain: Overhead valve (OHV), 4 valves per cylinder, single cam-in-block design with solid lifters, ductile-iron intake and exhaust rockers
Injection System: Electronic high-pressure common-rail, direct injection
Injection Pump: Electronically controlled Bosch CP3 radial piston pump with 3 internal plungers, gear-driven 1:1 with crankshaft but not timed to the crankshaft or camshaft, 23,200 psi peak pressure
Injectors: Bosch electronic, solenoid-activated via ECM, 8-hole nozzle with 143-degree spray angle (’03-‘04), 5-hole nozzle with 124-degree spray angle (’04.5-‘07)
Lift Pump: Electric with 11-psi supplied to CP3
Communication System: SCI (’03-‘05), CAN-bus (’06-‘07)
Aspiration: Turbocharged and intercooled
Intake: Cast-aluminum manifold
Turbo: Holset HE341CW fixed geometry with mechanically-actuated internal wastegate (’03-‘04), HE351CW fixed geometry with electronically-controlled internal wastegate (’04.5-’07)
Peak Boost: 24 psi
Intercooler: Air to air
Emissions Equipment: N/A (’03-’04.5), catalytic converter (04.5-‘07)
Horsepower: 305 hp at 2,900 rpm (’03-’04), 325 hp at 2,900 rpm (’04.5 high output), 325 hp at 2,900 rpm (’05-‘07)
Torque: 555 lb-ft at 1,400 rpm (’03-‘04), 600 lb-ft at 1,600 rpm (’04.5 high output), 610 lb-ft at 1,600 rpm (’05-‘07)
Governed Speed: 3,200 rpm
Available Transmissions: NV5600 six-speed manual (’03-’05), 47RE four-speed automatic (‘03), 48RE four-speed automatic (’04-‘07), G56 six-speed manual (’05.5-’07)
