The Spicer SPL250 Series Full Round Greaseable Universal Joint ensures you are Ready for the Road Aheadâ„¢, lending to 30% increased bearing life when compared to the leading competition. The universal joint allows driveshafts to move up and down with the suspension while the shaft is moving. With precise heat treatment, hardened case, and enduring processes of journal grinding, this heavy duty replacement u-joint ensures power can be transmitted when the driveshaft is not in a straight line between the transmission and drive wheels. Gain increased life and decreased maintenance time and costs with this Spicer universal joint.