Overview
Cummins QSB6.7 Engine – Product Description
The Cummins QSB6.7 diesel engine is a 6-cylinder Quantum series engine with high technology and environmentally friendly features designed for modern marine applications. 6.offering performance levels ranging from 230 to 550 horsepower with a 7-liter cylinder displacement, QSB6.7 engines provide quiet, efficient and reliable power supply for both commercial and recreational marine applications, superyachts and yacht support vessels. With up to 80% noise reduction at idle and virtually zero smoke emissions thanks to high pressure common rail (HPCR) fuel system technology, this engine has been specially developed for the ultimate boating experience. SGS Power provides original spare parts, engine parts and comprehensive technical support for QSB6.7 engines under the Cummins Turkey authorized dealer warranty. The QSB6.7 engine family maximizes boat performance with a new generation 24-valve cylinder head design, industry-leading power density and SmartCraft® electronics integration. The Bosch HPCR fuel system offers the ability to safely run alternative fuels such as kerosene and JP8/JP5. Manufactured at the Darlington (UK) and Rocky Mount (USA) engine plants, the QSB6.7 engines are backed by Cummins’ global service network and Cummins Captain’s Briefing, guaranteeing a peaceful sailing experience. Complying with EPA Tier 3 emission standards without the use of a finishing process, QSB6.7 is an environmentally friendly and high-performance power solution
Service and Maintenance
Professional QSB6.7 Periodic Maintenance and Overhaul Solutions
Regular periodic maintenance and professional service are critical for the optimal performance and long life of Cummins QSB6.7 engines. Especially in marine applications, engine reliability and uninterrupted operation are vital. At SGS Power, we offer comprehensive maintenance, repair and overhaul services for your QSB6.7 engines through our authorized Cummins service center infrastructure and our technical team of Quantum series engine experts. Our preventive maintenance programs extend the life of your engine, increase fuel efficiency and prevent unexpected failures. When using ULSD (Ultra Low Sulfur Diesel) fuels, the oil service interval is up to 500 hours. Our QSB6.7 engine overhaul service includes complete engine disassembly, inspection of all critical parts, replacement of worn or damaged parts with original Cummins spare parts and reassembly to OEM standards. Due to the high pressure common rail (HPCR) fuel system and Quantum series electronic control systems, QSB6.7 engines require special expertise and diagnostic equipment. With our technical information and advanced diagnostic support, we can analyze your engine’s performance, read the ECM (Electronic Control Module) data, diagnose problems and offer solutions. Our experienced service team performs all maintenance operations for all QSB6.7 models, including fuel system calibration, turbocharger maintenance, cooling system service and SmartCraft® electronic system integration.
QSB6.7 Engine Services
- Periodic Maintenance: Oil-filter change (front-mounted filters), fuel system check, cooling system maintenance, 500-hour service interval with ULSD fuel
- General Overhaul Services (Overhaul): Complete engine overhaul, cylinder head service, 24 valve system maintenance, piston and piston ring replacement
- Fuel System Service: Bosch HPCR (High Pressure Common Rail) system maintenance, injector tests and calibration, fuel pump control, alternative fuel adaptation
- Turbocharger Maintenance and Repair: Turbo overhaul, aftercooler cleaning, Walker air filter replacement
- Technical Support: 24/7 technical consultancy, remote diagnostics, spare parts consultancy, Cummins Captain’s Briefing
- Electronic System Service: ECM (Electronic Control Module) diagnostics, SmartCraft® system integration and calibration, digital throttle and shift controls
- Emergency Service Fault intervention in the field, emergency repair and spare parts supply in marine applications
- Diagnostic Services: Quantum system electronics analysis, performance tests, emission measurements (IMO 2, EPA 3, RCD 2 standards), diagnostic and prognostic services
Product Spare Parts
Genuine Cummins QSB6.7 Spare Parts
At SGS Power, as an authorized Cummins dealer in Turkey, we only supply 100% genuine Cummins QSB6.7 spare parts. All genuine parts for your QSB6.7 engine parts needs come with Cummins factory warranty and quality certificates. Thanks to our engine serial number (ESN) based working system, we guarantee the right part for your engine. Quantum series QSB6.7 engines require the use of original parts due to their high-tech HPCR fuel system and advanced electronic control systems. To avoid performance losses, emission problems, excessive fuel consumption and serious damage to your engine caused by the use of sub-industry or equivalent parts, we strongly recommend that you choose only Cummins genuine spare parts. With our extensive stock network and fast procurement system, we ensure that QSB6.7 original spare parts are supplied as soon as possible, even in case of urgent needs.
Certificates and Approvals: QSB6.7 engines comply with IMO Tier 2, EPA Tier 3 and RCD 2 emission standards. They are designed to meet IACS (International Association of Classification Societies) and SOLAS requirements.
Alternative Fuel Compatibility: QSB6.7 engines can safely run on alternative fuels such as kerosene, JP8 and JP5 thanks to hardened Bosch HPCR components.
Note: QSB6.7 engines have part differences depending on model, power level (230-550 HP) and package configuration (standard or SL package). Please specify your engine serial number (ESN) for correct part identification. All our spare parts stocks are regularly updated and please contact us for any QSB6.7 engine parts not listed.