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BMW Alternator E81 E87 316i 318i E46 318 E90 E91 E93 320 X3 Z4 12V 140A OE 0124525059

BMW Alternator E81 E87 316i 318i E46 318 E90 E91 E93 320 X3 Z4 12V 140A

OE 0124525059

Delivery Nationwide - Door to Door

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R 3,250.00 tax incl.


Availability: In Stock

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BMW Alternator E81 E87 316i 318i E46 318 E90 E91 E93 320 X3 Z4 12V 140A

OE 0124525059

Delivery Nationwide - Door to Door 


This is a brand new, affordable OE Specification replacement product. 100% Factory tested and built to strict quality control standard to ensure high performance and guaranteed to deliver better fuel economy.

Above picture for illustration purposes only.

This is a non-genuine quality aftermarket BMW replacement product.


Product Description

An automotive charging system is made up of three major components: the battery, thevoltage regulator and an alternator. The alternator works with the battery to generate power for the electrical components of a vehicle, like the interior and exterior lights, and the instrument panel. An alternator gets its name from the term alternating current (AC). Alternators are typically found near the front of the engine and are driven by the crankshaft, which converts the pistons' up-and-down movement into circular movement. Alternators produce AC power through electromagnetism formed through the stator and rotor relationship. The electricity is channelled into the battery, providing voltage to run the various electrical systems.

Defective Symptoms

Alternators work tirelessly to produce electricity for the modern vehicle is subject to great wear and tear so it is not common for your alternator to finally call it quits. But before they do, they always warn the driver.

Service Light

  • Most vehicles have a battery light somewhere on the dashboard that indicates battery life. If this light comes on, the battery is fairly new and holds a charge well when tested, and you've ruled out an electrical short, then the problem might be the alternator.


  • Inside the alternator are several parts that spin in order to produce the electrical current. When these parts become worn or break, the result is noise. It usually sounds like a rattling or clanging. Listen closely when the alternator is operating to see if you can notice any unusual sounds.

Dimmed/Slowed Accessories

  • Normally, when you turn on any accessory such as the dashboard lights, radio or blinkers, the accessory is powered indirectly by the alternator, which keeps the battery charged. When the alternator is bad, however, it cannot produce enough electricity to operate all electrical accessories at maximum capacity. The dash and headboard lights thus may dim, signal lights may operate slowly and music players may not function.


  • The alternator is responsible for keeping the charge of the battery high. When it doesn't operate properly, the battery voltage may drop too low to start the car. If you find that your car has needed jumps lately or that it frequently goes completely dead, then the alternator may be the culprit.

Technical Specification

OE No’s used as reference only

OE Numbers cannot be displayed. Please call us.

OE 0124525059 | 0986047240

(Bosch Type)

Engine - M42 | M42B18 | N45 | N45B16A | N46 | N46B20A | N46B20B

Volts - 12V

Amps - 140A

Pulley - 6 x Groove

Type - IR/IF

Pin - 


Suitable Replacement for - (Including International Vehicles)

BMW E87 118i

BMW E81 118i

BMW E87 118i

BMW E81 118i 

BMW E87 120i

BMW E81 120i

BMW E46 316i

BMW E46 318 Ti

BMW E46 320i

BMW E90 320i

BMW E91 320i

BMW E93 320i

BMW E83 X3 2.0i

BMW E85 Z4 2.0i


Please ensure this is the correct type at time of purchase. Please contact us.


Shipping Information

Ships via Berco - Door to Door - R350.00

International Buyers, please ask for shipping quotation first.


Guarantee / Returns

This item carries a limited guarantee on Electrical items. The supplier will conduct all tests for returns.


Food for thought

Alternating current generating systems were known in simple forms from the discovery of the magnetic induction of electric current. The early machines were developed by pioneers such as Michael Faraday and Hippolyte Pixii.

Faraday developed the "rotating rectangle", whose operation was heteropolar - each active conductor passed successively through regions where the magnetic field was in opposite directions. The first public demonstration of a more robust "alternator system" took place in 1886. Large two-phase alternating current generators were built by a British electrician, J.E.H. Gordon, in 1882. Lord Kelvin and Sebastian Ferranti also developed early alternators, producing frequencies between 100 and 300 Hz. In 1891, Nikola Tesla patented a practical "high-frequency" alternator (which operated around 15 kHz). After 1891, polyphase alternators were introduced to supply currents of multiple differing phases. Later alternators were designed for varying alternating-current frequencies between sixteen and about one hundred hertz, for use with arc lighting, incandescent lighting and electric motors.


bmw e46 318i alternator, E85 z4 e83 x3 alternator, E81 87 e91 e93 e90 alternator, bmw alternator, 0124525059, 0986047240

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