Car Parts Discount
Universal Joint

Aftermarket & OEM Universal Joint

The simplest explanation for drive train problems like a jerky feeling or clunking sound during acceleration is almost always a failed or broken U-joint. It is located at the moment in the drive line where your drive shafts are bending in two separate directions, while also turning at thousands of revolutions per minute. It isn't always under stress, but inherent in its design is its ability to transfer high amounts of torque from one driveshaft to another while they are both articulating at different angles. Couple that with the potential to be submerged in water (not very common, but can still be an issue) or a lack of grease, and you have a recipe for acute failure. Proper universal joint maintenance is important for the longevity of your drive train, and if you don't want to take your car or truck into the shop to get a new drive shaft yoke or completely new shafts all together, then make sure the joints are cared for and replaced when needed.

We know that universal joints have been used since the renaissance, but we first saw them used in automobiles in 1904. Clarence Spicer saw a centuries-old device used to aid in the movement of gyroscopes, and got it patented for use in the driveshafts of cars. This allowed for a constant velocity from a driving shaft (the one connected to the transmission) to be transmitted to an intermediate or driven shaft closer to the rear wheels that was operating at the same speed but a different angle. Since the rear axles are mounted to a suspension that can travel up and down independently from the front, there needed to be a way to allow for this movement without destabilizing the entire vehicle. The U-joint was just that device. It looks like a small cross with four bearing caps set 90-degrees apart. The yokes of each drive shaft are pressed to the opposite caps (180-degrees apart), which allows the shafts to move and rotate at the same time. To keep this movement restricted to the same plane, often another U-joint is added.

Replacing a universal joint can be either very easy or very difficult, depending on your vehicle. Your best bet is to drop the drive shaft you are working on so that the job can be done on a bench. Witness marks need to be made on each yoke so that they can be reassembled in the same position as before (since the drive shafts need to be balanced). The C-clips that hold the U-joint bearing caps into the yoke will have to be popped out so that it can be removed. After that, a new one can be installed and new clips will keep it in place. Again, the hardest part is accessing the yokes and flanges... and this is best done by removing the entire shaft.

You've come to Car Parts Discount for a reliable replacement U-joint, and here you'll find it. CPD has top name brand drive train parts like drive shafts, universal joints, yokes, and more for your car or truck. Our prices are super low, and shipping is fast. So don't delay any longer.