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Cummins Qsl9 Long Block Assembly Diesel Engine for Excavator. Complete Cummins QSL9 long block assembly designed for excavator and industrial applications. Built to OEM specifications ensuring reliable performance, durability and extended engine service life. Includes major engine components professionally assembled for efficient installation and maintenance. Suitable for excavators, construction machinery, power equipment and industrial diesel engine systems. Available in genuine, remanufactured and OEM-quality options with worldwide shipping and technical support.