Joint replacement vary in price by application. With the low cost to replace the entire axle, it is typically more common to replace the full assembly rather than just the joints.
Reasons why you may consider a CV joint replacement
Your vehicle’s CV joints connect to the drive axles, which connect the transmission to the wheels. The inner CV joint connects the transmission to the axle, and the outer joint connects the axle to the wheels. Because the CV joint links two rotating shafts in a fixed position, it must allow for a range of motion to compensate for road force while keeping the two shafts connected.
The CV joint is responsible for transmitting consistent torque to the wheels regardless of the angle of the axle or shaft. The CV joints move with the suspension system to help the wheels maintain a constant velocity through various road forces like bumps and potholes. The CV joint is designed like a ball and socket joint and uses steel balls to move a larger ball enclosed by steel. A CV boot covers the CV joint and helps ensure proper lubrication. CV joints allow for a range of motion while keeping your vehicle’s wheels moving at the same speeds over all types of surfaces.
As a CV joint loses lubrication, the moving metal parts wear on one another and slowly degrade over time. Noises, vibrations, and loss of acceleration through turns are all signs that a CV joint may require a replacement. Another problem that might lead to a CV joint replacement is your CV boot. The CV boot encases the CV joint to retain the necessary amount of grease to keep the joint lubricated. If the grease leaks, the CV joint will lose the proper amount of lubrication necessary to keep the internal CV joint parts from excessive wear.
If you experience the symptoms of a worn or damaged CV joint and the joint is not promptly replaced, the minor issue will cause additional damage to your vehicle and lead more expensive repairs in the future. The cost of replacing your CV joint is cheaper than the major repairs you may face if a faulty CV joint is left untreated.