Click the image to expand

Genuine BMW Voltage Regulator | 12311739365

BMW 325i, M3, 530i, 525i, 540i, 740iL, 740i, 325is, 318i, 318ti & more
$147.99
Reg
$154.16
List
$195.87
Available To Order Status
Available To Order Information Icon
Usually ships within 1-2 business days. Availability is not guaranteed.
Loading...

Make Sure It Fits

P/N: 12311739365 Genuine BMW FREE SHIPPING
Description:
1990-92 M5, 535, 750 Alternator Serviced As Assembly Only. 1993 740 Alternator Serviced As An Assembly Only.
Bosch. 70 amp.
Your part is located within diagram as #2.

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 BMW 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 BMW 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 BMW Voltage Regulators.

Any Genuine brand part is obtained directly through our vehicle dealership network from your vehicle's manufacturer. This is always your best option for getting the exact same part that is being replaced and will be the latest version design.
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.

Why Buy OEM & Genuine Replacement Auto Parts from AutohausAZ?

Auto parts at wholesale prices is what you will find at AutohausAZ. Have you been searching the web for auto parts for your vehicle? You have come to the right place! Here at Autohaus, we strive to offer low prices on quality replacement parts and providing first rate customer service.

What This Genuine BMW 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.

BMW
94-95 - 318i
94-95 - 318iC
94-95 - 318is
95-95 - 318ti
94-95 - 325i
94-95 - 325is
94-95 - 525i
94-95 - 525iT
94-95 - 530i
94-95 - 530IT
94-95 - 540i
94-95 - 740i
94-95 - 740iL
94-95 - 750iL
94-95 - 840Ci
94-95 - 850Ci
94-95 - 850CSi
95-95 - M3