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ISB300
Cummins
The Cummins ISB300 represents a benchmark of reliability and performance in the mid-range diesel engine segment. As a key member of the globally proven ISB (Interact System B) series, this 6.7-liter inline six-cylinder engine delivers a robust 300 horsepower, making it a trusted and versatile power source for a wide range of demanding on-highway and vocational applications. Engineered for durability, fuel efficiency, and low total cost of ownership, the ISB300 combines advanced electronic controls with a heavy-duty design to meet the rigorous demands of modern commercial fleets and emergency services.
The following table summarizes the key performance data for the ISB300 model based on its application profile:
The ISB300 is engineered to be the dependable heart of various medium to heavy-duty vehicles and specialized equipment:
Heavy-Duty Trucks & School Buses: An ideal powerplant for regional haul tractors, dump trucks, and school buses, providing the perfect balance of power and efficiency for stop-and-go and variable load cycles.
Fire & Emergency Apparatus: Specifically designed and rated for critical service in fire trucks, rescue vehicles, and ambulance chassis, where immediate response and unwavering reliability are non-negotiable.
Specialty & Vocational Vehicles: Also commonly specified for recreational vehicles (RVs) and other vocational chassis requiring durable and consistent power.
Enhanced High-Pressure Common Rail (HPCR) Fuel System: The ISB300 utilizes an advanced HPCR fuel system that maintains constant, ultra-high pressure regardless of engine speed. This enables precise, multiple injection events per cycle for superior combustion efficiency, resulting in excellent fuel economy, significant noise reduction, and optimal power delivery across the entire operating range.
Integrated Emissions Control System: The engine meets stringent emission standards through a fully integrated design. Its key components—a Cooled Exhaust Gas Recirculation (EGR) system to lower combustion temperatures, a patented Variable Geometry (VG) Turbocharger for precise boost control and fast response, and a Cummins Particulate Filter that reduces particulate matter by 90%—are all managed as a cohesive system by the engine's electronic control module (ECM).
Full-Authority Electronic Controls & Connectivity: The engine is managed by a powerful, full-authority ECM with higher processing capacity. This "smart" system not only optimizes engine and aftertreatment performance in real-time but also enables advanced connectivity for remote diagnostics and fleet management, helping to maximize uptime.
Proven B-Series Durability Platform: As the third-generation evolution of the legendary Cummins B-Series platform, the ISB inherits a legacy of ruggedness. It features a compact yet strong design with a high power-to-weight ratio, contributing to lower maintenance costs and proven long-term reliability in the field.
The Cummins ISB300 represents a benchmark of reliability and performance in the mid-range diesel engine segment. As a key member of the globally proven ISB (Interact System B) series, this 6.7-liter inline six-cylinder engine delivers a robust 300 horsepower, making it a trusted and versatile power source for a wide range of demanding on-highway and vocational applications. Engineered for durability, fuel efficiency, and low total cost of ownership, the ISB300 combines advanced electronic controls with a heavy-duty design to meet the rigorous demands of modern commercial fleets and emergency services.
The following table summarizes the key performance data for the ISB300 model based on its application profile:
The ISB300 is engineered to be the dependable heart of various medium to heavy-duty vehicles and specialized equipment:
Heavy-Duty Trucks & School Buses: An ideal powerplant for regional haul tractors, dump trucks, and school buses, providing the perfect balance of power and efficiency for stop-and-go and variable load cycles.
Fire & Emergency Apparatus: Specifically designed and rated for critical service in fire trucks, rescue vehicles, and ambulance chassis, where immediate response and unwavering reliability are non-negotiable.
Specialty & Vocational Vehicles: Also commonly specified for recreational vehicles (RVs) and other vocational chassis requiring durable and consistent power.
Enhanced High-Pressure Common Rail (HPCR) Fuel System: The ISB300 utilizes an advanced HPCR fuel system that maintains constant, ultra-high pressure regardless of engine speed. This enables precise, multiple injection events per cycle for superior combustion efficiency, resulting in excellent fuel economy, significant noise reduction, and optimal power delivery across the entire operating range.
Integrated Emissions Control System: The engine meets stringent emission standards through a fully integrated design. Its key components—a Cooled Exhaust Gas Recirculation (EGR) system to lower combustion temperatures, a patented Variable Geometry (VG) Turbocharger for precise boost control and fast response, and a Cummins Particulate Filter that reduces particulate matter by 90%—are all managed as a cohesive system by the engine's electronic control module (ECM).
Full-Authority Electronic Controls & Connectivity: The engine is managed by a powerful, full-authority ECM with higher processing capacity. This "smart" system not only optimizes engine and aftertreatment performance in real-time but also enables advanced connectivity for remote diagnostics and fleet management, helping to maximize uptime.
Proven B-Series Durability Platform: As the third-generation evolution of the legendary Cummins B-Series platform, the ISB inherits a legacy of ruggedness. It features a compact yet strong design with a high power-to-weight ratio, contributing to lower maintenance costs and proven long-term reliability in the field.