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An alternator gets its name from the term alternating current (AC). All the electrical components in a car need 12 volts power all the time to perform its tasks properly and the car battery provides this 12v to all the electrical components in the car such as lights, power steering, AC compressor, etc.
In order to achieve this continuous availability of 12 Volts to all the electrical components, we need to keep the battery charged at 12 volts and that's the task of an alternator to maintain this 12 volts power in the battery while the car engine is running.
In short, Alternator is the component that recharges the battery and reinstating the lost battery power. The alternator is located in the engine compartment. If the alternator does not work properly, the car will only stay running for as long as the battery has power stored in it. Once the battery loses power, the car won't start.
The cost of alternator replacement depends on the vehicle make, model, part quality, and labor time to replace the alternator. As the labor time and part price are not same for all makes and models, Therefore it's impossible to give the exact replacement cost of the alternator unless we know the particular vehicle on which the price is required. You can find out the exact cost of alternator replacement on your car, select the make and model at the top of the page.
On average, the alternator replacement cost on most mid-range vehicles is between £150 to £345. if you need to replace the alternator on your car, you can find a mechanic from a smart servicing centre who can come to your house or office to carry out the repair work, and it's convenient and cheaper than going to a garage.