Unlike the Jacobs compression brake, the MBE 4000 does not use the exhaust valves – just the constant throttle valve. The exhaust brake is a flap valve located in the exhaust pipe immediately ...

The MBE 4000 is an inline-six, 12.8 L engine available in five ratings; 370-450 hp (1900 rpm) and 1250-1650 lb ft of torque (1100 rpm). The standard exhaust brake provides up to 370 hp of retarding ...