QSB6.7

  • 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

  • Peace of mind delivered by the Cummins Captain’s Briefing and global service network

  • Built at Darlington Engine Plant in Darlington, U.K. and Rocky Mount Engine Plant in Rocky Mount, NC, U.S

Configuration In-line, 6-cylinder, 4-stroke diesel
Aspiration Turbocharged / Aftercooled
Displacement 6.7 L
Bore & Stroke 107 X 124 mm
Rotation Counterclockwise facing flywheel
Fuel System High Pressure Common Rail
Overall Length 1263.8 mm
Length of Block 748.0 mm
Overall Width 910.6 mm
Overall Height 857.0 mm
Weight 658 kg

Recreational Marine Propulsion Engines (Variable Speed Ratings)

Model kW MHP BHP Speed (RPM) Rating Emissions
QSB6.7 184 250 247 2600 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 224 305 301 2600 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 261 355 350 3000 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 SL 261 355 350 3000 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 279 380 375 3000 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 SL 279 380 375 3000 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 312 425 419 3000 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 SL 312 425 419 3000 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 353 480 473 3300 High Output IMO 2 | EPA 3 | RCD 2
QSB6.7 405 550 542 3300 High Output IMO 2 | EPA 3 | RCD 2

Commercial and Light Duty Marine Propulsion Engines (Variable Speed Ratings)

Model kW MHP BHP Speed (RPM) Rating Emissions
QSB6.7-SW 169 230 227 3000 Intermittent IMO 2 | EPA 3 | EU 3a
QSB6.7-SW 184 250 247 2600 Heavy Duty IMO 2 | EPA 3 | EU 3a
QSB6.7-KC 184 250 247 2600 Heavy Duty IMO 2 | EPA 3 | EU 3a
QSB6.7-SW 224 305 301 2600 Medium Continuous IMO 2 | EPA 3 | EU 3a
QSB6.7-KC 224 305 301 2600 Medium Continuous IMO 2 | EPA 3 | EU 3a
QSB6.7-SW 261 355 350 2800 Intermittent IMO 2 | EPA 3 | EU 3a
QSB6.7 SL - SW 261 355 350 3000 Intermittent IMO 2
QSB6.7-KC 261 355 350 3000 Intermittent IMO 2 | EPA 3 | EU 3a
QSB6.7-SW 280 380 375 3000 Intermittent IMO 2 | EPA 3 | EU 3a
QSB6.7 SL - SW 280 380 375 3000 Intermittent IMO 2
QSB6.7-SW 312 425 419 3000 Intermittent IMO 2 | EPA 3 | EU 3a
QSB6.7 SL - SW 312 425 419 3000 Intermittent IMO 2
QSB6.7-KC 312 425 419 3000 Intermittent IMO 2 | EPA 3 | EU 3a
QSB6.7-SW 353 480 473 3000 Intermittent IMO 2 | EPA 3 | EU 3a
QSB6.7-SW 353 480 473 3300 Government Services IMO 2 | EPA 3 | EU 3a
QSB6.7-SW 404 550 542 3300 Government Services IMO 2 | EPA 3 | EU 3a