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BMW Motorcycle Alternators

If it weren’t for your alternator, your motorcycle would be an oversized paperweight. After all, that's what produces the great part of the electricity your ride uses -- including the juice that starts it in the first place. However, motorcycle alternators are not like the ones found in cars and SUVs.

Put simply, an alternator produces power by generating alternate current (AC). This power is what charges and powers the electrical components while your motorcycle is running. A motorcycle alternator is often called a stator, which is a simpler type of alternator. It's accompanied by a regulator, or rectifier, and is usually considered part of the engine.

The stator is made of three parts: the rotor, stator, and field coil. The AC is generated when the rotor rotates around the stator as your bike runs. The stator has spokes around it, with copper coils encircling each spoke. When magnets on the rotor rotate around magnets on the stator, a current is produced. The regulator converts that AC power into direct current (DC) power that the battery can store, while also ensuring the correct amount of voltage is delivered.

How to Spot a Failing Alternator

Since the battery can't power the motorcycle on its own, you run the risk of getting stranded by the side of the road if your alternator fails. Signs include a misfiring engine, difficulty starting your motorcycle, dimming lights, and a poorly performing engine. If you experience any of these symptoms, you'll need to check your charging system to determine the source of the problem.

We're Your Best Source When Shopping for Genuine OEM Alternators Online

Your manufacturer makes the best alternators for your motorcycle, since they designed them specifically for your model. Our online parts store has everything you need for the project in stock and ready to ship, so buy now to get back on the road and riding safely!

Refine Results
Alternator
$840.58
Part Number: 12311357497
Other Names: Alternator More Names
Replaces: 12311351585, 12311358132
Alternator
$988.06
Part Number: 12312305316
Other Names: Alternator More Names
Replaces: 12311459005, 12311459651
Alternator
$1,171.74
Part Number: 12312306280
Other Names: Alternator More Names
Alternator
$1,161.97
Part Number: 12317676863
Other Names: Alternator More Names
Alternator
$1,142.46
Part Number: 12317699394
Other Names: Alternator More Names
Alternator
$1,230.34
Part Number: 12317701566
Other Names: Alternator More Names
Description: For vehicles with seat heating [X518A (-)]. More Info
Alternator
$410.11
Part Number: 12317722463
Other Names: Alternator More Names
Replaces: 12317707150
Alternator
$1,340.99
Part Number: 12318396695
Other Names: Alternator More Names
Description: Attention: rotor and stator absolutely must be replaced together!. More Info
Alternator
$1,161.97
Part Number: 12312305000
Other Names: Alternator More Names
Alternator
$1,041.56
Part Number: 12312306020
Other Names: Alternator More Names
Alternator
$1,301.94
Part Number: 12317718420
Other Names: Alternator More Names
Alternator
$1,222.86
Part Number: 12117687776
Other Names: Alternator More Names
Replaces: 12117652964
Alternator
$1,041.56
Part Number: 12312306955
Other Names: Alternator More Names
Description: For vehicles with reinforced power supply [X509A (+)]. More Info
Alternator
$1,171.74
Part Number: 12317676907
Other Names: Alternator More Names
Description: Only in conjunction with. More Info
Alternator
$1,171.74
Part Number: 12317679792
Other Names: Alternator More Names
Alternator
$1,171.74
Part Number: 12317704220
Other Names: Alternator More Names
Alternator
$1,222.86
Part Number: 12317715476
Other Names: Alternator More Names
Alternator
$1,106.67
Part Number: 12317722639
Other Names: Alternator More Names
Alternator
$1,301.94
Part Number: 12318406639
Other Names: Alternator More Names
Alternator
$1,408.06
Part Number: 12318414440
Other Names: Alternator More Names
Alternator
$729.24
Part Number: 12311244637
Other Names: Alternator More Names
Replaces: 12311243287, 12311243288
Alternator
$1,106.67
Part Number: 12312305888
Other Names: Alternator More Names
Alternator
$1,171.74
Part Number: 12317712825
Other Names: Alternator More Names
Alternator
$1,301.94
Part Number: 12318356824
Other Names: Alternator More Names
Replaces: 12317724032, 12318526908
Alternator
$1,340.99
Part Number: 12318404476
Other Names: Alternator More Names
Description: Attention: rotor and stator absolutely must be replaced together!. More Info
Alternator
$1,408.06
Part Number: 12318414445
Other Names: Alternator More Names
Alternator
$1,301.94
Part Number: 12318553990
Other Names: Alternator More Names
Alternator
$1,301.94
Part Number: 12318556028
Other Names: Alternator More Names
Replaces: 12318541003
Alternator
$581.42
Part Number: 12318559623
Other Names: Alternator More Names
Alternator Cover
$678.11
Part Number: 11145A010F9
Other Names: Alternator Cover More Names
Alternator Cover
$294.18
Part Number: 11148404145
Other Names: Alternator Cover More Names
Description: Color mixture code U979 black satin-gloss 2. More Info
Alternator Cover
$678.11
Part Number: 11148552207
Other Names: Alternator Cover More Names
Alternator Cover
$294.18
Part Number: 11148568812
Other Names: Alternator Cover More Names
Description: Color mixture code wm3S copper metallic matte. More Info
Alternator Cover
$189.31
Part Number: 11149457853
Other Names: Alternator Cover More Names
Alternator With Pulley
$1,171.74
Part Number: 12317715081
Other Names: Alternator More Names
Rp Alternator
$1,294.77
Part Number: 12318524422
Other Names: Alternator More Names
Replaces: 12317690427
Alternator Cover
$617.31
Part Number: 11147725738
Other Names: Alternator Cover More Names
Description: Repair paint M957. More Info
Alternator Rotor
$341.76
Part Number: 12311541462
Other Names: Alternator Cover More Names
Alternator Cover
$44.81
Part Number: 11141464637
Other Names: Alternator Cover More Names
Replaces: 11141460827
Cover, Alternator
$617.31
Part Number: 11147726966
Other Names: Alternator Cover More Names
Replaces: 11147713742
Description: Repair paint M957. More Info
Alternator Cover
$183.59
Part Number: 11148562760
Other Names: Alternator Cover More Names
Alternator Cover
$294.18
Part Number: 11149832013
Other Names: Alternator Cover More Names
Description: Color mixture code M963 grantigrau-metallic matt. More Info
Alternator With Pulley
$1,041.56
Part Number: 12312306878
Other Names: Alternator More Names
Description: For vehicles with reinforced power supply [X509A (-)]. More Info
Pulley Alternator
$87.41
Part Number: 12311342075
Other Names: Alternator Pulley More Names
Replaces: 12311340934
Alternator Rotor
$341.76
Part Number: 12311540515
Other Names: Alternator Rotor More Names
Set Alternator With Freewheel
$592.37
Part Number: 12311540516
Other Names: Alternator More Names
Replaces: 12318409384
Description: Important: comply with repair instructions!. More Info
Set, Alternator Cover
$400.22
Part Number: 11149829369
Other Names: Alternator Cover More Names
Description: Repair paint A45 matt black. More Info
Suppression Capacitor Alternator
$26.84
Part Number: 12311356564
Other Names: Alternator More Names
Description: For vehicles with official vehicles. More Info
Adapter Cable For Alternator
$40.95
Part Number: 61127691725
Other Names: Alternator Cable More Names
Description: For vehicles with seat heating [X518A (+)]. More Info
Set Alternator With Freewheel
$592.37
Part Number: 12311541463
Other Names: Alternator More Names
Set, Alternator Cover
$400.22
Part Number: 11148406702
Other Names: Alternator Cover More Names
Description: Repair paint M960 aluminiumsilber-metallic. More Info
Black Alternator Support Cover
$581.68
Part Number: 11111341895
Other Names: Alternator Cover More Names
Description: For vehicles with drivetrain, black [X568A (+)]. More Info
Silver Alternator Support Cover
$581.68
Part Number: 11111342292
Other Names: Alternator Cover More Names
Replaces: 11111341890, 11111341917
Black Alternator Support Cover
$581.68
Part Number: 11111342293
Other Names: Alternator Cover More Names
Replaces: 11111341891
Silver Alternator Support Cover
$581.68
Part Number: 11111341893
Other Names: Alternator Cover More Names
Replaces: 11111341253
Description: Check connection for engine ventilation! Seal without rotational ventilator!. More Info
Front Cover/Alternator Support Cover
$344.93
Part Number: 11148409867
Options: Front
Other Names: Alternator Cover More Names
Fan Wheel
$31.29
Part Number: 12311459036
Other Names: Alternator Fan More Names
Stator Assembly
$437.44
Part Number: 12311459288
Other Names: Alternator Stator More Names
Set Alternator
$1,354.04
Part Number: 12318558421
Replaces: 12317729666, 12318534666

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