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Cummins QSB 5.9 Technical Specifications

QSB5.9 for Recreational Marine
  • Unmatched peformance driven through a perfectly matched turbocharger and a new 24-valve cylinder head that delivers industry-leading power density
  • Quiet operation, including an 80-percent reduction in noise at idle, is one of the many benefits from the common-rail fuel system
  • Enhanced sociability from the high-pressure common-rail design virtually eliminates smoke and improves the whole boating experience
  • Maximize vessel performance and access comprehensive vessel diagnostic information via SmartCraft® electronics
  • Peace of mind delivered by the Cummins Captain’s Briefing and global service network
View PDF Description Size Date
QSB 5.9 General Engine Data Sheet (640 KB) December 2012
QSB 5.9 Quantum Series Engine Overview (640 KB)
QSB Running Fuel Pressure (108 KB)
QSB Oil Pressure Tap on Filter Head (87 KB)
QSB Oil Pressure Tap on Engine Block (87 KB)
QSB 5.9 Oil Line Styles (153 KB)
DieselView Full Master Reset Instructions (133 KB)
QSB Installation Pictures (153 KB)

Identifying your qsb 5.9 engine components
View Article Description Date
QSB Fuel Regulator June 2012
QSB ECM and Electronic Components including Wiring Harness February 2012
Cummins 6B & QSB Oil Filters March 2013
Heater Hookup Ports for Your B, QSB, & C Series Cummins June 2011
Identifying Ahe Alternator on the QSB 5.9 (at least 3 styles since 2006) June 2011
Your QSB Thermostat June 2011
Identifying the Belt Tensioner on your QSB June 2011
Identifying The Front of Your QSB 5.9 May 2011
Inside Your QSB May 2011

Replacing the stretchy belt on a QSB 5.9 seawater pump
Using a 15/16 socket on the alternator nut, rotate the engine CCW while keeping pressure on the belt until the belt seats completely around the pulley.

Do-it-yourself upgrades
View Article Description Date
Cummins B & QSB Custom Front Bracketing Ideas January 2013
QSB Modified with Fuel Cooler Removal April 2012
Upgrade your Gear-Oil Cooler August 2011

Common Failures & How-To's
View Article Description Date
QSB "Screaming Fan Hub" Bearing Failure November 2011
Bleeding Air from Your QSB Fuel System June 2011

View PDF Model No. Rating Designation CPL Code Curve No. Date
QSB 5.9-230 HD COMMERCIAL 8464 M-91367 May 2010
QSB 5.9-230 INT COMMERCIAL 8464 M-92009 May 2010
QSB 5.9-230 HO (2,600 rpm) RECREATIONAL 8464 M-91370 May 2010
QSB 5.9-230 HO (3,000 rpm) RECREATIONAL 8464 M-92033 May 2010
QSB 5.9-305 HO RECREATIONAL 8464 M-91369 May 2010
QSB 5.9-305 MCD COMMERCIAL 8464 M-91365 May 2010
QSB 5.9-330 HO RECREATIONAL 8464 M-91366 May 2010
QSB 5.9-355 HO RECREATIONAL 8464 M-91368 May 2010
QSB 5.9-355 INT COMMERCIAL 8464 M-91298 May 2010
QSB 5.9-380 HO RECREATIONAL 8464 M-91364 May 2010
QSB 5.9-425 HO RECREATIONAL 8732 M-91632 May 2010
QSB 5.9-425 HO RECREATIONAL 1860 M-93262 May 2010
QSB 5.9-425 INT COMMERCIAL 1860 M-93263 May 2010
QSB 5.9-440 HO RECREATIONAL 1860 M-92284 May 2010
QSB 5.9-480 HO RECREATIONAL 1860 M-92132 May 2010
View PDF Description Size Date
B & QSB Front Mount Options & Pad Dimensions (217 KB)
QSB 5.9 with ZF220A (376 KB) March 2010
B & C Series - Installation Directions (2,483 KB)
B Mount Options from Cummins (146 KB)
View PDF Description Size Date
QSB, QSC, QSL Smartcraft Wiring #3970189 (1,830 KB) November 2005
Specifications
Configuration In-line 6-cylinder, 4-stroke diesel
Bore & Stroke 102 mm x 120 mm (4.02 in x 4.72 in)
Displacement 5.9 L (359 in3)
Aspiration Turbocharged/Aftercooled
Rotation Counterclockwise facing flywheel

Markets Marine
Certification Level Tier 2 / Stage II
Power 230 - 480 hp / 172 - 358 kW
Torque 510 - 942 lb-ft / 692 - 1278 Nm

Ratings
Rating HO/GS HO ID/HO HO/GS ID/HO HO MD/HO HD/HO ID/HO
Metric hp 480 440 425 380 355 330 305 230 230
bhp 472 436 420 375 350 325 300 225 227
KW 352 325 313 280 261 243 224 168 169
Rated rpm 3400 3400 3000 3000 2800 2800 2600 2600 3000
Max Torque ft-lbs 942 913 908 898 853 830 783 670 510
Max Torque N-m 1278 1238 1231 1218 1156 1125 1062 908 691
rpm @ max torque 2200 2000 2000 2000 2000 1800 1800 1600 1600

Features
Fuel System: Bosch High-Pressure Common-Rail, Front mounted spin-on Fleetguard fuel filter

Lubrication System: Front mounted spin-on Fleetguard lube filter

Electrical System: 12-volt and 24-volt systems available

Air Intake System: Light duty or servicable type air cleaner

Coolant System: Sea Water heat exchanger cooling system; Keel cooled system available

Emissions: EPA Tier 2, IMO, and RCD certified

Breather System: Open or closed

Engine Updates: Optional dry run SW pump and an alternate fuel capability (JP8, JP5)