Cummins ISB 6.7L Engine: Specs, Problems, and Reliability. Cummins ISB 6.7-liter straight-six turbodiesel engine is the most up to date and biggest version of the B series. The ISB 6.7 [ Read More.]
Cummins ISB 6.7L Engine: Specs, Problems, and Reliability. Cummins ISB 6.7-liter straight-six turbodiesel engine is the most up to date and biggest version of the B series. The ISB 6.7 [ Read More.]