... line,water cooled,4-stroke 3.Certification:ISO9001:2000 4.Crawler Bulldozer 1.Model:Cummins NT855-C280S102.Type:Straight line,water cooled ... ,4-stroke,direct injiection3.Guarantee:1year MD23 series of Tracked Bulldozer with high quality, strong power, more safety & excellent performance, competitive ...