If you're looking for a severe duty oilfield truck that maneuvers through the toughest conditions, the Western Star 4900 SA is an ideal choice. With engines up to 625 hp, severe duty transmissions, and twin-steer configurations, the 4900 SA can be customized for all your oilfield needs. From the oilfields of Alberta to West Texas, you'll know why the Western Star 4900 SA is becoming the North American oilfield truck of choice.