The Komatsu 3RB2211120 is a genuine OEM GEAR, an essential component designed for reliable power transmission and operational efficiency in various Komatsu heavy equipment. This high-quality gear ensures optimal performance and durability in demanding applications. It is compatible with Komatsu models including PC200-8, PC210-8, PC220-8, PC240-8, PC270-8, PC290-8 excavators, D61EX-15, D61PX-15 dozers, and GD555-5, GD655-5, GD675-5 motor graders.