Quick view BD Diesel BD Diesel 14-20 Cummins ISX15 w/ Engine Intake Throttle Equipped E-PAS Positive Air Shut-off - 1036770 Compare $699.99 Descending grades with trailers can be hazardous and tricky situations, resulting in over heated service and trailer brakes, that leads to brake fade, excessive wear, and costly unwarranted repairs. BD Engine brake has been the industries time proven... Add to Cart Add to Cart