QSC8.3 for Marine

Overview

QSC8.3 for Marine

368-441 kW | 493-592 hp

  • Unmatched performance from industry-leading power density on this four-valve-per-cylinder engine
  • Increased durability  from innovative engine design characteristics
  • Improved  fuel economy  and sociability from the high-pressure common-rail fuel system
  • 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
  • Built at Rocky Mount Engine Plant in Rocky Mount, NC, U.S.

Specifications

Configuration

In-line, 6-cylinder, 4-stroke diesel

Aspiration

Turbocharged / Aftercooled

Displacement

8.3 L (505 in3)

Bore & Stroke

114 X 135 mm (4.49 X 5.31 in)

Rotation

Counterclockwise facing flywheel

Fuel System

High Pressure Common Rail



Product Dimensions and Weight

Overall Length

mm (in)

1422.0

(55.99)

Length of Block

mm (in)

856.0

(33.70)

Overall Width

mm (in)

977.5

(38.48)

Overall Height

mm (in)

981.6

(38.65)

Weight

kg (lb)

896

(1975)


Dimensions may vary based on selected engine configuration.

Engine Finder Specifications

Markets
Certification Level Tier 3 / Stage IIIA
IMO Tier II
RCD 1
Power 490 - 600 hp / 365 - 447 kW
Torque 1327 lb-ft / 1799 N•m

Ratings

Recreational Marine Propulsion Engines (Variable Speed Ratings)

Model

kW

MHP

BHP

Speed (RPM)

Rating

Emissions

Performance Curve

QSC8.3

368

500

493

2600

High Output

IMO 2 | EPA 3 | RCD 2

FR94976

QSC8.3

404

550

543

3000

High Output

IMO 2 | EPA 3 | RCD 2

FR94341

QSC8.3

441

600

592

3000

High Output

IMO 2 | EPA 3 | RCD 2

FR94339

 

Commercial and Government Marine Propulsion Engines (Variable Speed Ratings)

Model

kW

MHP

BHP

Speed (RPM)

Rating

Emissions

Performance Curve

QSC8.3-SW

368

500

493

2600

Intermittent

IMO 2 | EU 3a

FR92044

QSC8.3-SW

368

500

493

2600

Intermittent

IMO 2 | EPA 3 | EU 3a

FR94342

QSC8.3-KC

368

500

493

2600

Intermittent

IMO 2 | EPA 3 | EU 3a

FR94976

QSC8.3-SW

441

600

592

2800

Government Services

IMO 2 | EPA 3 | EU 3a

FR94340


For more information on marine ratings, click here. For more on marine emissions information, click here.

Features

Engine Design – Unmatched performance from industry-leading power density on this four-valve-per-cylinder engine. 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 

Fuel System – Improved fuel economy and sociability from Cummins high pressure common rail fuel system; handed spin-on engine mounted fuel filter

Lubrication System – Handed spin-on engine mounted lube filter, cast aluminum oil pan

Cooling System – Sea water heat exchanger cooling system

Air Intake System – New Walker air filter significantly reduces noise

Exhaust System – Cast water cooled exhaust manifold for lower surface temperatures, safety and improved performance

Electronics – 12v and 24v Quantum System electronics feature a proven ECM to monitor operating parameters such as fuel consumption, duty cycle, engine load and speed, while providing diagnostics, prognostics and complete engine protection. Simplified electrical customer interface box for all vessel connections to reduce installation complexity

Certifications – Complies with U.S. EPA Tier 3 emissions regulations without the use of aftertreatment. Designed to meet the International Association of Classification Societies (IACS) and SOLAS requirements. Consult your local Cummins professional for a complete listing of available class approvals.

Optional Equipment

  • Engine Controls – Digital Throttle and Shift; Electronic Throttle and Shift (ETS) and optional potentiometer for mechanical controls
  • Instrumentation – SmartCraft® digital displays and/or analog gauges provide data on engine speed, oil pressure, engine load and more
  • Vessel System Integration – SmartCraft® monitors fluid level, vessel range, depth, vessel speed, rudder position, temperatures and more

Brochures Available

Title Bulletin Number Request View  
2018 Marine Products Guide 3381946 Request View  Download
Cummins Care Marine Flyer 4087307 Request View  Download
Marine Maintenance Schedule Flyer 5410779 View  Download
Marine Warranty Overview Flyer 5410780 View  Download
QSC8.3 Commercial Marine Spec Sheet 4087434 Request View  Download
QSC8.3 Quantum Series Engine for Recreational Applications Spec Sheet 4087253 Request View  Download
Quantum Series ReCon Engines Flyer 2878914 Request View  Download

Technical Documents Available

Title Bulletin Number View  
DTS (SmartCraft 2.2) System Architecture & Option Overview Diagram 4082046 View  Download
DTS (SmartCraft 2.2) Wiring Diagram 4082050 View  Download
Non-DTS (SmartCraft 2.2) System Architecture & Option Overview Diagram 4082047 View  Download
Preliminary Non-DTS (SmartCraft 2.2) Wiring Diagram 4082051 View  Download
QSC8.3 500 hp HX w/ ZF280A Marine Installation Drawing 3170725 View  Download
QSC8.3 500 hp HX w/ ZF280IV Marine Installation Drawing 3170724 View  Download
QSC8.3 HX Marine Installation Drawing 3170592 View  Download
QSC8.3 HX w/ MG5065A SAE2 Marine Installation Drawing 4953706 View  Download
QSC8.3 HX w/ MG5065A SAE3 Installation Drawing 4953705 View  Download
QSC8.3 HX w/ ZF280A Marine Installation Drawing 3170695 View  Download
QSC8.3 HX w/ ZF285A Marine Installation Drawing 3170650 View  Download
QSC8.3 HX w/ ZF285IV Marine Installation Drawing 3170649 View  Download
QSC8.3 HX w/ ZF286A SAE3 Installation Drawing 4953776 View  Download
QSC8.3 HX w/ ZF286IV SAE3 Installation Drawing 4953780 View  Download
QSC8.3 Marine Engine General Datasheet DS-3038 View  Download
QSC8.3 w/ Zeus Drive Installation Drawing 4953801 View  Download
QSC8.3-500 INT Marine Performance Curve 368 kW (500 hp) @ 2600 RPM (EPA Tier 3) M-94343 View  Download
SmartCraft 1.0 System Architecture & Option Overview Diagram 4082056 View  Download
SmartCraft 2.5 DTS Marine Propulsion Wiring Diagram 4304664 View  Download
SmartCraft 2.5 Non-DTS Marine Propulsion Wiring Diagram 4304665-03 View  Download
SmartCraft 2.5 w/ Zeus Marine Propulsion Wiring Diagram 4304663 View  Download
Zeus (SmartCraft 2.1) System Architecture & Option Overview Diagram 4082043 View  Download
Zeus (SmartCraft 2.1) Wiring Diagram 4082045 View  Download
Zeus Helm Components Installation Drawing 4953822 View  Download

Case Studies Available

Title  
Bristol Bay: Everything in 32-Feet View
Small Nation, Big Marine Territory View
Speed, Innovation, Luxury, Fun View
Tom Aliotti: Designed and Built by Fishermen for Fishermen View