What Is a Wheel Bearing? Function, Location, Types, and Hub Assemblies Explained
Plain-language guide to what a wheel bearing does, where it sits in the hub, ball vs tapered designs, bolt-on hubs vs pressed bearings, and how to identify yours.
Systems Page 36
How engines, transmissions, brakes, suspension and electronics actually work.
What Is Power Steering Fluid and What Does It Do?
Learn what power steering fluid is, what it is made of, how it moves force through a hydraulic steering system, the main types, and basic safety facts.
What a Serpentine Belt Does and How It Differs From the Timing Belt
Learn what a serpentine belt is, which accessories it drives, why it is also called a drive belt, and how it differs from the timing belt in job, location and service.
What Engine Coolant Is and How a Car Cooling System Works
A beginner explainer of car coolant: what it is, what it does for the engine, and how the radiator, water pump, thermostat, hoses and fans keep temperature stable.
What Is a Spark Plug and What Does It Do in a Car Engine?
A beginner's guide to spark plugs: what they are, what they do in a car engine, how they fire, their parts, and how they wear over time.
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