A differential's main job is to allow your wheels on an axle to turn at different speeds. It takes the power from the engine and splits it, letting each wheel receive what it needs. Think of it like this: when you’re turning a corner, the outside wheel has to travel a longer distance than the inside wheel. The differential allows for that difference without binding up the drivetrain. It also provides the final gear reduction, giving you the necessary torque to move the vehicle. It’s a core component of your drivetrain, right between the engine and the wheels. The power comes from the engine, through the transmission, then usually a driveshaft, and finally into the differential. From there, the axles connect to the wheels. It’s a pretty fundamental piece for getting power to the ground. Different vehicles have different types – you've got open differentials, limited – slip, locking differentials, even electronic ones – but they all do this basic splitting and power delivery. It’s really important because without a functioning differential, you’d have a rough ride at best, and a completely immobile vehicle at worst. If it fails, you’ll notice if it's making a lot of noise – whining, clunking, things like that – or if the car is hard to steer, or pulls to one side. It basically acts like a shield against the forces of turning and keeps everything moving smoothly. A failing differential can also cause vibrations. We carry a good selection of differentials at Fixparts Online, if you want to check out options for your specific vehicle. It’s definitely something you want to address quickly if you suspect an issue. Shop smarter: Differential (MPN 04L906051) is covered for 12 months!

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