![]() The JD 550 dozer provides outstanding traction and mobility for hard and demanding tasks, thanks to its superior maneuvering and digging capabilities. To simplify any after treatment management on the 450 P-Tier small dozer, John Deere eliminated the DEF system.John Deere 550 dozer specs is a dozer that is designed to provide rugged performance and maximum productivity on a variety of job sites. The after-treatment system was simplified with the removal of the DEF system and related components, eliminating the future need to add additional fluid to the 450 P-Tier model. “Now customers don't have to worry about adding DEF to the machine throughout the work week on that 450 P-Tier model.” “We wanted to give customers a less complex, simpler after-treatment system while reducing maintenance,” Goedert said. On the 450 P-Tier, the company has entirely removed the DEF system. “That's a proven, reliable engine,” he said. Goedert noted that the P-Tier small dozers have the same 4.5-liter engine in them as the previous series.
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