Rushing to work, you hop in your car, back out of the driveway — and there’s a clunk! It seems harmless at first, but as you accelerate, a deep vibration spreads through the car.
These are telltale signs of a bad u-joint (or universal joint).
Damaged u-joints aren’t just annoying — they can wreak havoc on your drivetrain and even put your safety at risk. That’s why replacing them ASAP is a smart move.
Worried about the expense?
In this guide, we’ll break down the u-joint replacement cost, warning signs, and repair process. We’ll also share maintenance tips to keep your u-joints in top shape.
This Article Contains:
- How Much Does a U-Joint Replacement Cost?
- Is It Worth Replacing a U-Joint?
- 3 Key Signs You Need a U-Joint Replacement
- How to Diagnose and Replace a Bad U-Joint
- 3 FAQs about U-Joints
How Much Does a U-Joint Replacement Cost?
Here’s a breakdown of the cost and factors affecting u-joint replacement:
A. Range
A universal joint replacement in the United States will cost you between $270 and $345.
This includes:
- Parts cost: $160 to $175
- Labor cost: $110 to $170
B. Factors Affecting Cost
Universal joint replacement costs vary based on local labor rates and your car’s model. Other factors include:
- Material used: Common alloy steels are the most economical. However, stainless steel and aluminum u-joints come at a higher price due to their superior corrosion resistance. Exotic materials, such as titanium and Inconel are the most expensive choice as they offer superior strength and heat tolerance.
- Universal joint sizes: The larger a u-joint is, the more material is required to manufacture it, which increases the part’s cost. However, those with an outer diameter of 3/8” or smaller are also expensive, as they require special machining and processing.
- U-joint configuration: Regular hubs (where the axle shaft is inserted and secured) have standard bore sizes and are usually inexpensive. Custom hub shapes (hexagonal, square, or splined bores) offer better versatility but are more costly.
- Original Equipment Manufacturer (OEM) vs aftermarket parts: OEM parts are pricier since they offer better durability. Aftermarket parts are cheaper but vary in quality.
- Additional repairs: A mechanic may also recommend replacing worn yokes (ends that hold the u-joint in place) or carrier bearings. This will incur additional expenses — replacing a carrier bearing may cost between $310 and $390.
NOTE: Before purchasing a u-joint replacement in a repair shop, check the universal joint sizes and product specifications list to choose one compatible with your vehicle.
Is It Worth Replacing a U-Joint?
Yes, absolutely!
A bad universal joint causes vibrations in the driveline, which may become more noticeable during acceleration or at higher speeds.
Severely damaged u-joints can become stuck or seize up, eventually breaking and causing the driveshaft to detach from the vehicle while driving. This can lead to loss of control and accidents.
If you notice any signs of u-joint failure, contact trusted mechanics or repair shops immediately.
3 Key Signs You Need a U-Joint Replacement
Your car’s u-joints may be damaged if you notice:
- Vibrations that worsen at highway speeds: Unbalanced u-joints lead to uneven driveshaft rotation, which causes your vehicle to shake.
- Repetitive squeaking or clicking sound: A lack of lubrication in the u-joint causes metal-on-metal friction and abnormal sounds.
- A clunking noise when shifting gears or reversing: Bad u-joints allow excessive driveshaft movement, resulting in a clunking noise.
How to Diagnose and Replace a Bad U-Joint
DIY repairs can be risky, as improper alignment can lead to driveline damage or complete failure. That’s why replacing a bad universal joint is best handled by a professional who can ensure precise installation within the yoke.
Here’s what a professional will do during the replacement process:
- Remove the underbody covers or parts of the exhaust system to access the u-joints.
- Inspect the driveline for excess movement in any joint, leaking transfer case seals, or a worn carrier bearing.
- Remove the driveshaft by unbolting it from the differential and sliding it out of the transmission yoke.
- Take out the snap rings securing the faulty universal joint.
- Remove the u-joint using a hydraulic press or the hammer-and-socket method.
- Ensure the product specifications of the new u-joint match your vehicle’s requirements.
- Install the new u-joint carefully to avoid damaging the bearings, and secure it using snap rings or retention rings.
- Reinstall the driveshaft and align it properly to prevent vibrations.
- Grease the u-joint to ensure proper lubrication.
TIP: When replacing your u-joint, it’s a great opportunity to take care of other routine maintenance tasks, such as an oil change. Ask your mechanic to perform a general car diagnosis for potential problems.
3 FAQs about U-Joints
Here are the answers to some commonly asked questions on u-joints:
1. How Does a U-Joint Work?
U-joints allow the driveshaft to transfer power to the wheels while maintaining flexibility. They connect two rotating shafts — the transmission output shaft and the driveshaft — using a hinge-like design that enables movement in multiple directions.
The u-joint ensures that power flows smoothly, even when the shafts don’t align. This helps maintain consistent performance and reduces strain on the drivetrain.
2. How Long Do U-Joints Last?
With proper maintenance, u-joints can last a vehicle’s lifetime or up to 100,000 miles.
However, they can fail prematurely due to:
- Lack of greasing and maintenance
- Frequent heavy loads or off-road driving
- Damage from accidents
- Rubber components drying out and cracking over time
3. What Are Some Ways to Extend the Life of U-Joints?
These simple practices can make your u-joints last longer:
- Avoid overloading the vehicle, as heavy loads put extra stress, leading to faster wear and potential failure.
- Keep the undercarriage clean by removing dirt and debris that can cause damage.
- Grease the u-joints frequently (every 3000 miles) if you drive on off-road trails or in extreme temperatures. Under normal conditions, you can grease them every 5,000 miles.
NOTE: Regular vehicle maintenance (oil change or transmission fluid check) helps keep drivetrain components, including the u-joints, healthy by reducing stress and heat.
Say Goodbye to Worn-Out U-Joints with AutoNation Mobile Service
A faulty universal joint is a ticking time bomb for your drivetrain. Left unchecked, it can lead to expensive repairs and unsafe driving conditions.
The good news is — you don’t have to waste time at repair shops.
AutoNation Mobile Service can fix your u-joints right from your driveway, seven days a week. We also back every service with a 12-month, 12,000-mile warranty, so you can hit the road worry-free.
Contact us today for a hassle-free u-joint replacement or other car repairs.