Freightliner Trucks recently showcased its new model Mercedes-Benz diesel engines, which will be available in trucks in the first quarter of 2004. The MBE4000 and the MBE900 both use an Exhaust Gas Recirculation system (EGR) to meet the upcoming 2004 emission standards.

"Customers appreciate the performance capacity, fuel economy, weight-savings, quiet operation and reliability of these engines and are impressed with the bottom line benefits," said Mark Lampert, Freightliner's senior vice president of sales and marketing.

Here's a closer look at the two engines:

MBE4000

This 12.8-liter heavy-duty engine is offered in Freightliner's Century Class S/T and Columbia, as well as in heavier-duty Business Class M2 trucks. This engine delivers high torque at low RPM. The high-output turbocharger is matched with high-pressure injectors for better drivability and improved fuel economy. Its horsepower range is 350-450 and torque range from 1,350-1,550 pound-feet.

MBE900

The 4.3 to 7.2-liter range of engines are designed for use in medium-duty truck applications, including distribution, food and beverage delivery, towing, utilities and fire and emergency service. In the Freightliner Trucks product line, the MBE900 is offered in Freightliner Business Class M2 vehicles.

These engines are available in four- and six-cylinder configurations and offer horsepower ratings from 170-330 hp and torque range from 420-1,000 pound-feet. Delivering this range of torque at a low RPM, the MBE900 allows for fewer, smoother shifts and more capacity to climb hills and negotiate stop-and-go traffic.