Born out of necessity, bred to be a powerhouse. The Cummins 6.7 24V ISB cylinder head is a modern marvel. The most dependable and long lasting straight-six turbodiesels are produced by none other than Cummins.
It is one of the later iterations from the masters of diesel at Cummins. The ISB 6.7 blows the doors off the competition with a whopping 305-385 hp and 650-900 ft/lbs of torque.
The engines of the 6.7L and outgoing 5.9L are very similar, both of cast iron. The 6.7L enjoying the benefit of and increased cylinder bore and stroke to increase the displacement 0.8L. The 6.7L employs a common rail fuel system than is fed via an electronic fuel injection pump.
In order to satisfy the EPA, the 6.7L Cummins was developed which mainly serviced medium-duty trucks and buses. The 6.7 was the first Cummins to feature the diesel particulate filter or DPF.
The Holset turbo features selective exhaust technology called VGT to reduce emission levels and also functions as a turbo powered brake by choking the engine by acting as an air brake.