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The differential is a crucial component of your vehicle's drivetrain system. It is responsible for distributing power from the engine to the wheels, enabling your car to turn smoothly and efficiently. If you experience any issues with this auto part, it's essential to seek professional assistance immediately. This guide explains what it is, how it works, and more.

What Is a Differential? 

It is a gear system that allows the wheels on an axle to rotate at different speeds. This is necessary because when turning, the inside and outside wheels of a car need to travel different distances. Without this auto part, the wheels would be forced to rotate at the same speed, causing unnecessary wear and tear on the tires and other components. 

How It Works 

The component works by using a set of gears to distribute power from the engine to the wheels. It has three main parts: the ring gear, the pinion gear, and the spider gears. The ring gear is attached to the differential case, which is bolted to the axle housing. The pinion gear is attached to the drive shaft, which connects to the engine. The spider gears are located in the center of the case and mesh with the ring and pinion gears. 

What Are the Different Types? 

There are several different types. Open differentials are the most common and allow the wheels on an axle to rotate at different speeds. Limited-slip versions use clutches or viscous fluid to limit the amount of slip between the wheels. Locking differentials lock the wheels on an axle together, allowing them to rotate at the same speed. 

Signs of a Faulty Differential 

If you're experiencing complications, you may notice a grinding or whining noise when turning, a vibration or shuddering when accelerating or decelerating, or difficulty turning. Other indications might include leaking oil and abnormal damage to your tires’ side walls or outer treads. These symptoms should be addressed as soon as possible to prevent further damage to your vehicle. 


If your vehicle requires differential services in High Point, NC, look no further than Friendly Transmission Service Inc. They’re a family-owned business that has proudly been serving their community for more than three decades. Their team of ASE-certified technicians can diagnose and repair a wide range of issues. They do their best to provide same-day service and are transparent about pricing, so there are no surprise costs. Contact them at (336) 882-1164 or visit their website to find out more.

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