The Caterpillar 665371 is a genuine OEM shaft designed for a wide range of Caterpillar heavy machinery. This essential component ensures proper power transmission and operational integrity across various applications including articulated trucks, Challenger tractors, industrial engines, excavators, motor graders, pipelayers, track-type tractors, and wheel loaders. Manufactured to Caterpillar's stringent quality standards, the 665371 shaft provides reliable performance and durability in demanding environments. It measures 254 mm in length, 50.8 mm in width, and 50.8 mm in height, with a weight of 0.45 kg.