Subaru CV Axles Vs CV Joints
If you're shopping for replacement parts for your Subaru’s drivetrain, you might come across CV axles and CV joints. These two parts are closely related, but they serve different functions. Many people confuse them because every CV axle contains CV joints, but they are not the same part.
So, what’s the difference? And which one do you actually need? Let’s break it down.
What Is A CV Joint?
A CV joint (constant velocity joint) is a flexible coupling that allows your car’s wheels to turn and move up and down while maintaining a steady power transfer from the engine. Subaru vehicles use two CV joints per axle:
- The inner CV joint connects the axle to the transmission.
- The outer CV joint connects the axle to the wheel hub.
These joints allow for smooth rotation at different angles, which is crucial for front-wheel-drive and all-wheel-drive vehicles.
What Is A CV Axle?
A CV axle is the entire assembly that includes both CV joints and the axle shaft that connects them. In simple terms, the CV axle is the complete part that transfers power from your Subaru’s transmission to the wheels.
Key difference: A CV axle is the full assembly, while a CV joint is just one component.
Why Are CV Joints And CV Axles Often Confused?
People often mix up these terms because CV joints come as part of a CV axle. If a CV joint is worn out, some mechanics recommend replacing the entire CV axle, while others may suggest just replacing the bad joint. Here’s why:
- Replacing just the CV joint can be cheaper in parts but requires more labor. Depending on the effort involved, the repair could end up costing you about the same as replacing the whole CV axle.
- Replacing the whole CV axle is often easier and ensures all components are new.
Do You Need A CV Axle Or A CV Joint?
If you're hearing clicking or popping noises while turning, feeling vibrations, or noticing grease leaks from a torn CV boot, you likely have a CV joint problem. Whether you replace just the joint or the whole axle depends on the age and mileage of your Subaru and the wear and tear on the axles.
For Subaru vehicles, it's often best to replace the entire CV axle assembly to avoid future issues.
How Much Do CV Axles And CV Joints Cost?
Costs of CV joints and CV axles can vary depending on your model. Typically they'll cost you several hundred dollars, but not thousands.
Another cost-saving option is to order your parts online at wholesale prices, and then have them installed locally by a trusted mechanic if you don't want to take on the job yourself. You can check the latest prices and find the right fit for your Subaru at Subaru Parts Plus.
Can You Replace A CV Axle Or CV Joint Yourself?
Newer Subarus mostly use a CV axle design that requires that the whole axle be replaced. If you have an older Subaru, you may be able to replace just the CV joint.
Replacing a CV axle is a moderate-to-advanced repair job that requires removing the wheel, suspension components, and axle from the transmission. If you’re an experienced DIYer with the right tools, you can do it at home. However, for most people, professional installation is recommended.
If you’re just replacing a CV joint, you’ll need to disassemble the existing axle, which can be a challenge. Most people opt to replace the full CV axle assembly instead.
Where To Buy Genuine Subaru CV Axles And CV Joints
When replacing drivetrain components, it's important to choose genuine Subaru parts for the best performance and durability. Subaru Parts Plus offers OEM CV axles and CV joints to ensure a perfect fit for your vehicle. Here's why we are the best place to buy Subaru parts:
Genuine OEM parts – Designed for perfect fit and durability.
Competitive pricing – Get the best value for factory parts.
Fast shipping – Get your parts quickly and minimize downtime.
Shop our huge selection of genuine Subaru CV axles here and restore your vehicle’s performance. If you have any questions, our staff are available to help you online or over the phone at 1-888-294-4979.