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Belts and Hose Inspection

Vibration, contamination, and exposure to heat make belts and hoses wear out faster than any other components in your car. That's why regular inspections are so important. Here are the types of belts and hoses in your vehicle, along with their applications.

AC Delco Belts and Hoses


Accessory Drive Belts

While some accessories in your car are electrically powered by the charging system, others use the engine itself as their power source. The power for these accessories is delivered by a system of pulleys and belts. Examples of these accessories include:

  • Alternator
  • Water pump for engine cooling
  • Power steering pump
  • Air conditioning compressor
  • Radiator cooling fan
(Many late model cars use a single serpentine belt in place of individual belts to drive these accessories.)


The hoses that convey your car's fluids are made of two rubber layers with a layer of fabric in between. Typical hoses include:

  • Radiator and heater hoses - These convey coolant to the engine and heater core.
  • Fuel hose - This hose transports gasoline from the tank to the engine.
  • Power steering hose - This connects the power steering pump to the steering gear.
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