What is a Universal Joint?
Universal joints allow the transfer of rotational energy without needing a “straight shot” to the fastener or rotating part. Universal joints are an important part of all rear-wheel and four-wheel drive drivetrains.
Universal joints allow the transfer of rotational energy without needing a “straight shot” to the fastener or rotating part. Universal joints are an important part of all rear-wheel and four-wheel drive drivetrains.
A vehicle’s engine and transmission are bolted directly to the frame or body, but the rear axle must swing up and down as you drive over bumps in the road. Universal joints allow the rotational energy of the engine to be transmitted to the rear axle of the vehicle.
Because the angle between the transmission and rear axle changes constantly as you drive, universal joints are required to keep them attached to one another. U-joints are a regular maintenance item on many rear-wheel and four-wheel drive vehicles.
Universal joints need to be strong and sturdy. They are constructed of forged and machined steel, using heavy factory machinery in a mass-production environment. Custom universal joint components can be manufactured by local prototype shops.
For the vast majority of vehicle applications, all that’s needed is a factory replacement or aftermarket universal joint. Universal joints come in a variety of sizes to fit most applications.
Universal joints are an important part of your vehicle’s drivetrain. If you notice excessive vibration or noise when starting off or accelerating, start the repair process by diagnosing the issue.
If you have questions or concerns about universal joints or any of your vehicle’s components, come into your local Pep Boys where we can answer any question, help you find any part, or perform any vehicle service you might need.
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