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QSB6.7 for Recreational Marine

Available for: Marine

Overview

QSB6.7 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

Specifications

Configuration

In-line 6-cylinder, 4-stroke diesel

Bore & Stroke

107 mm x 124 mm (4.21 in x 4.88 in)

Displacement

6.7 L (408 in³)

Aspiration Turbocharged / Aftercooled
Rotation

Counterclockwise facing flywheel

Engine Finder Specifications

Markets
Certification Level Tier 3 / Stage IIIA
Power 230 - 550 hp / 172 - 410 kW
Torque 720 - 1250 lb-ft / 976 - 1695 N•m

Ratings

 

Rating

HO/GS

HO/GS

ID/HO

ID/HO

MD/HO

HD/HO

Metric hp

550

480

425

380

305

250

bhp

542

473

419

375

295

247

KW

404

353

312

280

224

184

Rated rpm

3300

3300

3000

3000

2600

2600

Max Torque ft-lbs

1250

1165

1050

985

866

720

Max Torque N-m

1695

1580

1425

1335

1174

976

rpm @ max torque

2000

2000

2000

2000

1700

1700

Features

Fuel System:  Bosch HPCR with hardened components to safely operate alternative fuels such as kerosene and JP8/JP5

Lubrication System:  Front mounted filters, LO service interval increased  to 500 hours if use ULSD fuels

Electrical System:  12v and 24v, isolated and non­-isolated, systems available

Air Intake System:  New Walker air filter significantly reduces noise

Seawater System:  Optional dry run capability

Emissions: EPA Tier 3, RCD and IM02

Breather System:  Closed Crankcase Ventilation available on all ratings

Brochures Available

Title Bulletin Number Request View  
Cummins Inboard Joystick Flyer 4087327 Request View  Download
Cummins Zeus Pod Propulsion Sales Sheet 4087291 Request View  Download
QSB6.7 Quantum Series Engine Spec Sheet 4087252 Request View  Download
Recreational Marine Diesel Engines Brochure With Spec Sheet Inserts 4087293 Request View  Download
Recreational Marine Products Guide 4087295 Request View  Download

Warranty

Every Cummins marine engine is backed by a comprehensive warranty that is valid and consistent worldwide. Most products also include an extended warranty that covers major components for up to six years. Encompass extended protection plans allow you to customize the amount of coverage required for your vessel's application. A variety of choices including the number of hours, years or the option to include travel are available, so you won't have to pay for coverage you don't need.

Recreational Marine Base Warranty [pdf]
Cummins ENCOMPASS Parts And Labor Coverage Plan [pdf]
Cummins ENCOMPASS Parts, Labor And Travel Coverage Plan [pdf]
Cummins ENCOMPASS Parts, Labor And Travel Coverage Plan for Recreational Marine Engines [pdf]
Cummins Light Commercial Marine Propulsion [pdf]