PRODUCT Detail
ISX12. Better. From Start to Finish.
Cummins ISX12 builds on the legacy of the ISM and proven technology of the ISX15 to deliver better fuel economy, performance, reliability and durability. It has more horsepower and more torque, plus stronger acceleration – all in a compact design. It achieves near-zero emissions and reduces noise output. With 310-425 hp (231-317 kW), power output is a perfect match for transit bus applications.
Optimized calibrations have resulted insignificant fuel economy gains for the ISX12 versus the ISX11.9.
Cummins is the only engine manufacturer to design and develop, manufacture and support every component from the air intake to the exhaust aftertreatment in a totally integrated system.
The XPI fuel system is capable of the highest injection pressures in the industry, with a common-rail design that delivers strong performance independent of engine speed. The integrated system of the ISX12 also includes a VGT™ Turbocharger custom-built by Cummins Turbo Technologies.
The Cummins Aftertreatment System on the ISX12 combines a proprietary Cummins Particulate Filter with our Selective Catalytic Reduction (SCR) technology, functioning as a single unit. Designing and building the package in-house allows Cummins to calibrate the engine for optimum performance and near-zero emissions. The high efficiency of the aftertreatment frees the engine to generate higher horsepower while also saving fuel. Improved fuel economy not only lowers fuel consumption – it also reduces greenhouse gas (GHG) emissions. Cummins ISX12 delivers strong pulling power, excellent throttle response and high fuel economy numbers.
Advertised Horsepower | 310-425 hp | 231-317 kW |
Peak Torque | 1150-1650 lb-ft | 1559-2237 N•m |
Governed Speed | 2100 rpm | |
Clutch Engagement Torque | 800 lb-ft | 1085 N•m |
Number of Cylinders | 6 | |
Oil System Capacity | 11 U.S. gallons | 45.4 liters |
System Weight | 2,888 lb | 1,310 kg |
Engine (Dry) | 2,666 lb | 1,209 kg |
Aftertreatment System* | 222 lb | 101 kg |
*Increase over standard muffler and does not include chassis OEM-supplied components
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