Commonly used in Dodge Ram trucks. This is a complete Double Cardan CV head assembly (also called a CV weld yoke head unit or CV flange assembly) designed for welding onto the driveshaft tube. It is typically for the front constant velocity function at the transfer case end to accommodate suspension travel and angles. Frequently sold as a replacement for worn or damaged front driveshaft CV joint on Dodge Ram trucks. Cross-references with N921050G.