The Case IH CA3055431R91 is a genuine pilot ball bearing, specifically a 6204 2Z C4 type, featuring a groove for precise fitment. This robust bearing is designed with a 20mm inner diameter, 47mm outer diameter, and a 14mm width. The '2Z' designation indicates two metal shields for protection against contaminants, while 'C4' signifies a greater than normal radial internal clearance, enhancing performance in demanding agricultural applications. Essential for various Case IH tractor models, it ensures smooth operation in transmission or PTO systems.