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If you own a Jeep Wrangler, you likely want to do everything you can to keep it in good working order. Driving around in your Wrangler, whether on-road or off-road, is an experience worth preserving. You may be on top of common maintenance tasks such as changing your auto air filter, but have you kept up with your chassis maintenance?

What Is the Chassis?

First, it is important to understand what the chassis actually is. In short, it is the load-bearing framework under the body that holds most of the important components of the vehicle. Jeep Wranglers use body-on-frame construction. That means that chassis fits under the body and looks like a series of supports. This contrasts against unibody construction that is the same shape as the vehicle without the body panels.

The chassis is connected to the suspension system and supports the drivetrain. The body also sits on top of it. To work on it, you will likely need to raise the vehicle on a jack.


The most important part of maintaining a car chassis is lubricating the moving parts. The chassis handles a lot of movement and forces. You should lubricate the sway bars, bushings, steering joints and suspension joints. These can be lubricated with grease and a grease gun. This is fairly easy to do but can take a little bit of practice to do consistently and cleanly.

Some lubrication points have grease fittings that make lubricating them easier. However, in some cases, you will need to disassemble some parts and lubricate them directly. This is most common with suspension joints. Don’t worry though. With some basic tools and jack stands, this is fairly easy to do and should not add much time to the project.


While you are under your Wrangler, take a look at the chassis and other running components. Even if you are a beginner, you can likely identify if anything looks broken, corroded or rusted. Take your time and inspect everything carefully.

U-joints and other components that you were able to lubricate without disassembly will require some extra effort to inspect because you didn’t see everything when you did the lubricating. Make sure the truck is in neutral and make sure the joints move freely and easily.

If you find any problems or notice any broken parts, make sure to address them as soon as possible. You can easily find the right parts for your model Wrangler by using a VIN lookup free tool. All vehicle identification numbers are categorized by the version of the vehicle they belong to. Therefore, you can find the right parts with this simple but powerful tool at your local auto parts store.

Get Started

Working on your Wrangler is a great way to keep the cost of ownership down. It also makes your ownership experience more meaningful. People buy Wranglers because they love them, especially off-road enthusiasts. Show your love for your Jeep by doing some maintenance work. If you keep the chassis in good working order, you can expect to get many thousands more miles from it.