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Alternator

The alternator keeps the battery in a constant state of charge anytime the engine is running. If your lights are dimming or you hear excessive bearing noise around the alternator, chances are that it's time for a replacement.

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Hitachi Voltage Regulator - BMW E31 E32 E34 E36

T#:48850064

Part#: 12311747920

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$ 37.99 USD

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$ 37.99 USD

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This voltage regulator is a crucial component that controls the alternator's output, preventing overcharging by adjusting the current to maintain a safe range of vehicle voltage, thereby protecting the battery and electrical system. Symptoms of failure include dim lights, battery warnings, or a dead battery, often requiring replacement, which can be internal or external to the alternator.

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Voltage Regulator

T#:596879

Part#: 12321350052

Back Ordered

$ 41.99

This product was last offered at the strikethrough price on
05-07-2026

$ 39.71 USD

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$ 39.71 USD

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If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.

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Hitachi Voltage Regulator - 12317550469 - E88 128i

T#:48815477

Part#: 12317550469

Ships in 6 Business Days

$ 79.99 USD

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$ 79.99 USD

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Supplies power to your car's electronics and recharges the battery.

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Alternator

Hitachi Voltage Regulator - BMW E31 E32 E34 E36

Voltage Regulator

Hitachi Voltage Regulator - 12317550469 - E88 128i

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