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Beru Voltage Regulator | 0021548506MY

Mercedes E320, C230, 300DT, 190E, 300SD, 300E, ML320, E300D, E500, ML500 & more
Saab 9-5
In Stock Status
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Leaves warehouse within 1-2 business days.

Make Sure It Fits

P/N: 0021548506MY Beru
Cross References:
  • 0021548506
  • 0147311213
  • GER014

Voltage regulators maintain a constant range of alternator voltage output and convert the alternate current (AC) produced by the alternator into the direct current (DC) the vehicle operates on. As the alternator turns, it uses coil windings and magnets to create the alternate current. The faster the alternator turns, the more current and voltage is produced. The voltage regulator uses diodes to convert the AC to DC, limiting the alternator's voltage output to 12-14 volts.

Voltage regulators fail when they can no longer convert alternate current to direct current or when they can no longer maintain a consistent voltage that the vehicle requires to operate.

Signs of a faulty voltage regulator include:
  • Surging lights
  • Flickering interior lights
  • Instrument cluster or panel malfunctioning
  • Battery light or check engine light illuminated
  • A battery not being charged

Checking battery voltage or alternator output are simple ways to test a voltage regulator. Fluctuating battery voltage or drops in alternator output when the engine is at idle indicates the voltage regulator has failed and is not regulating voltage or not converting alternate current to direct current.

Replacing Your Vehicle's Voltage Regulator

Some voltage regulators are external to the alternator and can be removed and replaced in series with the alternator output circuit. Other voltage regulators are mounted inside of the alternator and may be removable and replaceable, but some will require the replacement of the alternator to replace the voltage regulator.

View more Beru Voltage Regulators.

Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

Frequently Viewed Together

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What This Beru Voltage Regulator Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

92-93 - 190E 2.3
90-93 - 300CE
87-87 - 300DT
603.960 From 051061 Internal
90-93 - 300E Base, 2.8, 4Matic
For AL0161X w/ 90Amp Internal
92-93 - 300SD
603.971 From 002387 Internal; Transmission Control Type: Automatic
90-93 - 300TE Base, 4Matic
For AL0161X w/ 90Amp Internal
92-93 - 400E
For AL 0168X w/ 110 Amp and AL0762X w/ 115 Amp Internal
92-93 - 500E
Internal w/ AL 0168 X (110 Amp) w/ AL 0762 X (115 Amp)
94-96 - C220
97-98 - C230
95-95 - E300D
Internal w/ AL 0161 X (90 Amp)
94-95 - E320
Internal w/ AL 0161 X (90 Amp)
94-95 - E420
Internal w/ AL 0168 X (110 Amp) w/ AL 0762 X (115 Amp)
94-94 - E500
Internal w/ AL 0168 X (110 Amp) w/ AL 0762 X (115 Amp)
98-03 - ML320
99-01 - ML430
Internal Up to A318686
02-05 - ML500
Internal Up to A318686
00-03 - ML55 AMG
Internal Up to A318686
94-95 - S350D
From Engine 12 002387 Internal
99-07 - 9-5 Base, 2.3t, Aero, Arc, Gary Fisher & more
For 130 Amp. Alternator