Collection: Alternators

Car alternators – choosing a unit and recognising charging system faults

The alternator supplies electrical power while the engine runs and charges the battery. This category offers new and selected remanufactured alternators for various cars. Correct selection depends on the vehicle's electrical and mechanical specifications.

How to recognise an alternator problem

A charging warning light, voltage drops, starting difficulties or unusual noises may indicate a charging system fault. Possible causes also include the battery, drive belt, regulator, electrical connections or earth cables.

How to choose an alternator

Compare the OE number, current output, rated voltage, pulley type, connectors and mounting points. Vehicle model and engine displacement alone may not be enough.

Remanufactured or new alternator?

For a remanufactured unit, check the scope of refurbishment, warranty terms and any old-unit return or deposit requirements. After fitting, verify charging performance and the condition of the auxiliary belt drive. For starting problems, also check batteries and chargers.