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OEM Automotive Alternators

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Get the Facts About Alternators

What one is: Part of the charging system in your vehicle, and a critical one. Without it, the vehicle wouldn't run at all.

What one does: Transforms mechanical energy (the movement of parts) into electrical energy (electricity). This is how your car battery charges and other electrical systems run. In fact, alternators help power everything from the dash lights and displays to power windows, the car radio, the steering system, the windshield wipers, and more.

How one works: basically, by creating a magnetic field. The engine, serpentine and drive belts, a pulley, and a rotor shaft work together to move a set of magnetic coils to do it. The alternator's rectifier captures the field's energy as the aforementioned electricity, turning it from AC into DC current managed by a voltage regulator.

Why they fail: four reasons -- parts damage or breakdown, an alternator belt that's too tight, jump-starting incorrectly, and installing an incompatible accessory. An alternator failing usually happens without any warning, too.

The signs of a bad one: there are several. Look for battery and alternator warning lights on the dash, erratic lighting and electronics, and alternator fluid leaks. Listen for a squeaking engine. Test for a dead battery, and smell for burning under the hood, near the battery or alternator. If you see these, inspect the alternator and test the charging system. Replace what's necessary, as indicated by the results.

When you change one otherwise: every 7 years or every 80,000 to 150,000 miles, whichever comes first. For more information, and further instructions on what to do, check your owner's manual. Before ordering a new one, be sure it's genuine.

Why buy a genuine OEM alternator: it'll be a guaranteed fit for your brand and model.

Where to order a replacement alternator online: from our catalog. All it takes is a few clicks. To find what's compatible more easily, browse by make, model, and model year. Buy now, and we'll ship in short order; the delivery will come right to your door.

Alternator
Part Number: 112-154-02-02-80
Mercedes-Benz Mercedes-Benz
Other Names: Remanufactured-Alternator
Replaces: 112-154-02-02, 112-154-02-02-60, 112-154-02-02-88
Description: 120 Amp. C32. Valeo.
Fits:
  • Mercedes-Benz:
    • C 32 AMG®,
    • SLK 32 AMG®
MSRP $571.00
$401.31
MSRP $571.00
$401.31
Alternator
Part Number: 156-154-01-02-88
Mercedes-Benz Mercedes-Benz
Other Names: Remanufactured Alternator
Replaces: 156-154-01-02, 156-154-01-02-60, 156-154-01-02-80, 156-154-01-02-87
Description: C63 amg. E63 amg. Ml63 amg. 6.3l. Cls63 amg. Sl63 amg. R63 amg.
Fits:
  • Mercedes-Benz:
    • C 63 AMG®,
    • CLK 63 AMG®,
    • CLS 63 AMG®,
    • E 63 AMG®,
    • ML 63 AMG®,
    • R 63 AMG®,
    • SL 63 AMG®
MSRP $1,016.00
$713.70
MSRP $1,016.00
$713.70
Alternator
Part Number: 6461540802
Mercedes-Benz Mercedes-Benz
Not For Sale
Not For Sale
Alternator
Part Number: 646-154-09-02-80
Mercedes-Benz Mercedes-Benz
Not For Sale
Not For Sale
Alternator
Part Number: 955603117x
Porsche Porsche
Other Names: Generator
Description: 3.6l, remanufactured.
Fits:
  • Porsche:
    • Cayenne
MSRP $1,539.07
$964.64
MSRP $1,539.07
$964.64
Alternator
Part Number: 94860301505
Porsche Porsche
Other Names: Generator
Replaces: 948-603-015-04
Description: From Engine 826 04064. 4.5l.
Fits:
  • Porsche:
    • Cayenne
MSRP $2,329.13
$1,459.83
MSRP $2,329.13
$1,459.83
Alternator
Part Number: 997-603-022-06
Porsche Porsche
Replaces: 997-603-022-00, 997-603-022-01, 997-603-022-02, 997-603-022-03, 997-603-022-04, 997-603-022-05
Description: Auto trans. Boxster. With free wheel lock. Cayman. Manual trans. 911, 911 Turbo. All. Without turbo. With gt3 model. New.
MSRP $2,681.68
$1,680.79
MSRP $2,681.68
$1,680.79
Alternator
Part Number: 99660301205
Porsche Porsche
Other Names: Generator
Replaces: 996-603-012-00, 996-603-012-01, 996-603-012-03
Description: Manual trans. Without free wheel lock. Boxster. New, auto trans. 911.
Notes: Included with alternator. Contact dealer for availability.
Fits:
  • Porsche:
    • 911,
    • Boxster
MSRP $2,899.49
$1,817.31
MSRP $2,899.49
$1,817.31
Alternator
Part Number: 99660301206
Porsche Porsche
Other Names: Generator
Replaces: 996-603-012-02, 996-603-012-04
Description: 911. Boxster. With free wheel lock. Without gt3. New, manual trans.
Notes: Contact dealer for availability.
Fits:
  • Porsche:
    • 911,
    • Boxster
MSRP $2,534.34
$1,588.44
MSRP $2,534.34
$1,588.44
Alternator
Part Number: 996603012fx
Porsche Porsche
Other Names: Generator
Description: Remanufactured.
Fits:
  • Porsche:
    • 911
MSRP $1,914.28
$1,115.07
MSRP $1,914.28
$1,115.07
Alternator
Part Number: 94860302503
Porsche Porsche
Other Names: Generator
Replaces: 948-603-025-00
Description: Cayenne. 4.8l.
Fits:
  • Porsche:
    • Cayenne
MSRP $2,329.13
$1,459.83
MSRP $2,329.13
$1,459.83
Alternator
Part Number: 95560391701
Porsche Porsche
Other Names: Generator
Replaces: 955-603-017-00
Description: Cayenne. 3.2l. 150 amp.
Fits:
  • Porsche:
    • Cayenne
MSRP $2,896.36
$1,815.35
MSRP $2,896.36
$1,815.35
Alternator
Part Number: 9A1-603-012-02
Porsche Porsche
Replaces: 9A1-603-012-00, 9A1-603-012-01
Description: 911, 911 Turbo. Without gt3 model. Boxster. Cayman. All, new. With turbo. Without gt2-rs model.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Cayman
MSRP $3,078.84
$1,929.72
MSRP $3,078.84
$1,929.72
Alternator
Part Number: 9A1-603-012-BX
Porsche Porsche
Other Names: R P 9A1603012BX
Replaces: 9A1-603-012-AX, 9A1-603-012-X
Description: All, remanufactured.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Cayman
MSRP $2,463.98
$1,544.35
MSRP $2,463.98
$1,544.35
Alternator
Part Number: 9A1-603-016-01
Porsche Porsche
Replaces: 9A1-603-016-00
Description: Boxster. 2.7l. Cayman. 2.7l. 911. With gt3.
Notes: Pully Is Serviced With Alternator On Not Serviced Model Years.
MSRP $2,015.97
$1,263.55
MSRP $2,015.97
$1,263.55
Alternator
Part Number: 958603121ax
Porsche Porsche
Other Names: Generator
Replaces: 958-603-121-X
Description: Cayenne. 3.6l.
Fits:
  • Porsche:
    • Cayenne
MSRP $684.39
$428.95
MSRP $684.39
$428.95
Alternator
Part Number: 997-603-012-12
Porsche Porsche
Replaces: 997-603-012-00, 997-603-012-01, 997-603-012-02, 997-603-012-03, 997-603-012-04, 997-603-012-05, 997-603-012-06, 997-603-012-07, 997-603-012-08, 997-603-012-09
Description: Auto trans. Cayman. Exc.Free Wheel Lock. Boxster. Manual trans. With free wheel lock. 911. With gt3.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Carrera GT,
    • Cayman
MSRP $2,553.61
$1,600.52
MSRP $2,553.61
$1,600.52
Alternator
Part Number: 94860303301
Porsche Porsche
Other Names: Generator
Replaces: 948-603-033-00
Description: 4.8L, new.
Fits:
  • Porsche:
    • Cayenne
MSRP $1,896.44
$1,188.63
MSRP $1,896.44
$1,188.63
Alternator
Part Number: 948603033ax
Porsche Porsche
Other Names: Generator
Description: Cayenne. 4.8l.
Fits:
  • Porsche:
    • Cayenne
MSRP $1,303.68
$817.11
MSRP $1,303.68
$817.11
Alternator
Part Number: 0PB-903-021
Porsche Porsche
Other Names: R P 0PB903021
Replaces: 9A2-603-022-00
Description: 2.5L, new. 911. Without gt3. 3.0l. 420/450hp.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman,
    • 911
MSRP $1,466.01
$918.85
MSRP $1,466.01
$918.85
Alternator
Part Number: 95890302401
Porsche Porsche
Other Names: Generator
Replaces: 9A7-903-024-10
Description: Panamera. 4.0l. Without hybrid. Cayenne. 4.0l. Cayenne. 2.9l. Cayenne. 3.0l. New.
Fits:
  • Porsche:
    • Cayenne,
    • Panamera
MSRP $2,047.36
$1,283.22
MSRP $2,047.36
$1,283.22
Alternator
Part Number: pac903018
Porsche Porsche
Replaces: 06H-903-017-K, 06H-903-018-E
Description: Macan. 2.0l.
Fits:
  • Porsche:
    • Macan
MSRP $2,187.16
$1,370.84
MSRP $2,187.16
$1,370.84
Alternator
Part Number: pac903018x
Porsche Porsche
Replaces: 06H-903-017-X, 06H-903-018-X
Description: 2017-18, 2.0L, remanufactured.
Fits:
  • Porsche:
    • Macan
MSRP $1,258.61
$788.86
MSRP $1,258.61
$788.86
Alternator
Part Number: pac903024ax
Porsche Porsche
Description: 2019-22, 2.0L, remanufactured.
Fits:
  • Porsche:
    • Macan
MSRP $1,377.98
$863.67
MSRP $1,377.98
$863.67
Alternator
Part Number: pab903024
Porsche Porsche
Replaces: 9A7-903-024-00
Description: 2.9, 3.0L. Panamera. 2.9l. Without hybrid. Panamera. 3.0l.
Fits:
  • Porsche:
    • Panamera
MSRP $1,595.54
$1,000.04
MSRP $1,595.54
$1,000.04
Alternator
Part Number: 997603012kx
Porsche Porsche
Replaces: 997-603-012-AX, 997-603-012-CX, 997-603-012-EX, 997-603-012-GX, 997-603-012-JX
Description: Remanufactured.
Fits:
  • Porsche:
    • 911
MSRP $1,309.20
$820.57
MSRP $1,309.20
$820.57
Alternator
Part Number: 955603119x
Porsche Porsche
Other Names: Generator
Description: 3.6l, remanufactured.
Fits:
  • Porsche:
    • Cayenne
MSRP $1,880.32
$1,178.53
MSRP $1,880.32
$1,178.53
Alternator
Part Number: 94860302305
Porsche Porsche
Other Names: Generator
Replaces: 948-603-023-02, 948-603-023-03, 948-603-023-04
Description: Panamera. 4.8L, without turbo, new.
Fits:
  • Porsche:
    • Panamera
MSRP $1,598.78
$1,002.06
MSRP $1,598.78
$1,002.06
Alternator
Part Number: 948603023ex
Porsche Porsche
Other Names: Generator
Replaces: 948-603-023-DX
Description: Reman.
Fits:
  • Porsche:
    • Panamera
MSRP $1,120.54
$702.32
MSRP $1,120.54
$702.32
Alternator
Part Number: 95560301610
Porsche Porsche
Other Names: Generator
Description: 3.2l.
Fits:
  • Porsche:
    • Cayenne
MSRP $2,329.02
$1,459.76
MSRP $2,329.02
$1,459.76
Alternator
Part Number: 94860302705
Porsche Porsche
Other Names: Generator
Replaces: 948-603-027-02, 948-603-027-03, 948-603-027-04
Description: Panamera. 4.8L, with turbo, new.
Fits:
  • Porsche:
    • Panamera
MSRP $1,740.91
$1,091.15
MSRP $1,740.91
$1,091.15
Alternator
Part Number: 948603027cx
Porsche Porsche
Other Names: Generator
Replaces: 948-603-027-BX, 948-603-027-X
Description: 4.8L, with turbo, remanufactured.
Fits:
  • Porsche:
    • Panamera
MSRP $1,239.41
$776.82
MSRP $1,239.41
$776.82
Alternator
Part Number: 94860302904
Porsche Porsche
Other Names: Generator
Replaces: 948-603-029-02, 948-603-029-03
Description: Panamera. Without turbo. 3.6l.
Fits:
  • Porsche:
    • Panamera
MSRP $1,743.13
$1,092.54
MSRP $1,743.13
$1,092.54
Alternator
Part Number: 948603029dx
Porsche Porsche
Other Names: Generator
Replaces: 948-603-029-CX
Description: Reman.
Fits:
  • Porsche:
    • Panamera
MSRP $1,220.19
$764.78
MSRP $1,220.19
$764.78
Alternator
Part Number: 95560311700
Porsche Porsche
Other Names: Generator
Description: Cayenne. 3.6l. 180 amp.
Fits:
  • Porsche:
    • Cayenne
MSRP $1,922.79
$1,205.15
MSRP $1,922.79
$1,205.15
Alternator
Part Number: 95560311900
Porsche Porsche
Other Names: Generator
Description: Cayenne. 3.6l. All.
Fits:
  • Porsche:
    • Cayenne
MSRP $2,349.24
$1,472.43
MSRP $2,349.24
$1,472.43
Alternator
Part Number: 9A1-603-018-02
Porsche Porsche
Other Names: R P 9A160301802
Replaces: 9A1-603-018-01
Description: 911. With gt3. Boxster. 3.4l, 3.8l. Cayman. 3.4l, 3.8l.
Fits:
  • Porsche:
    • 911,
    • Boxster,
    • Cayman
MSRP $1,499.45
$939.81
MSRP $1,499.45
$939.81
Alternator
Part Number: 95860312101
Porsche Porsche
Other Names: Generator
Replaces: 958-603-121-00
Description: 220 Amp.. 3.6L, new.
Fits:
  • Porsche:
    • Cayenne
MSRP $2,397.57
$1,502.72
MSRP $2,397.57
$1,502.72
Alternator
Part Number: 7pp903016d
Porsche Porsche
Other Names: Generator
Replaces: 7PP-903-016-B
Description: Panamera. With turbo. 3.0l.
Fits:
  • Porsche:
    • Panamera
MSRP $1,856.47
$1,163.58
MSRP $1,856.47
$1,163.58
Alternator
Part Number: 95890302500
Porsche Porsche
Other Names: Generator
Replaces: 059-903-023-L, 059-903-023-N, 958-603-123-00
Description: Cayenne. 3.0l diesel.
Fits:
  • Porsche:
    • Cayenne
MSRP $1,791.62
$1,122.93
MSRP $1,791.62
$1,122.93
Alternator
Part Number: 958903024ax
Porsche Porsche
Other Names: Generator
Description: 2.9L, remanufactured. 4.0L, remanufactured.
Fits:
  • Porsche:
    • Cayenne
MSRP $1,265.63
$793.26
MSRP $1,265.63
$793.26
Alternator
Part Number: pac903024
Porsche Porsche
Description: Macan. 2.9l. Macan. 3.0l. 2019-22, 2.9, 3.0L, new.
Fits:
  • Porsche:
    • Macan
MSRP $2,029.61
$1,272.10
MSRP $2,029.61
$1,272.10
Alternator
Part Number: pac903024a
Porsche Porsche
Description: Macan. 2.0l. 2019-22, 2.0L, new.
Fits:
  • Porsche:
    • Macan
MSRP $2,203.39
$1,381.01
MSRP $2,203.39
$1,381.01
Alternator
Part Number: pac903024x
Porsche Porsche
Description: 2019-22, 2.9, 3.0L, remanufactured.
Fits:
  • Porsche:
    • Macan
MSRP $1,377.98
$863.67
MSRP $1,377.98
$863.67
Alternator
Part Number: 4N1-903-028
Audi Audi
Replaces: 4N0-903-028-N, 4N0-903-028-P
Description: A7 Quattro. 3.0L. S8.
Not For Sale
Not For Sale
Alternator
Part Number: 4N0-903-028-R
Audi Audi
Notes: VIN may be required.
Fits:
  • Audi:
    • A6 allroad,
    • A6 Quattro,
    • RS Q8,
    • RS6 Avant,
    • RS7 Sportback,
    • S6,
    • S7,
    • S7 Sportback
Not For Sale
Not For Sale
Alternator
Part Number: 013-154-56-02-83
Mercedes-Benz Mercedes-Benz
Other Names: Remanufactured Alternator, Exchange Alternator
Replaces: 013-154-35-02, 013-154-35-02-80, 013-154-56-02, 013-154-56-02-80, 013-154-56-02-87, 013-154-56-02-88, 0131543502, 013154350280, 0131545602, 013154560280, 013154560287, 013154560288
Description: Without c63, with 4-matic.
Fits:
  • Mercedes-Benz:
    • C 300,
    • C 350,
    • CL 550,
    • CLK 550,
    • CLS 550,
    • E 320,
    • E 350,
    • E 55 AMG®,
    • E 550,
    • G 550,
    • GL 450,
    • GL 550,
    • ML 350,
    • ML 550,
    • R 350,
    • S 550,
    • SL 550
Not For Sale
Not For Sale
Alternator
Part Number: 07L-903-015-BX
Audi Audi
Other Names: Generator
Replaces: 07L-903-015-B
Description: 190 Amp. New.
Fits:
  • Audi:
    • S6
MSRP $1,013.84
$771.03
MSRP $1,013.84
$771.03
Alternator
Part Number: 03L-903-023
Audi Audi
Description: TT. 2.0l. With tts model. 140 Amp.. New. Vendor:bosch.
Fits:
  • Audi:
    • TT Quattro,
    • TTS Quattro
MSRP $1,255.82
$955.05
MSRP $1,255.82
$955.05
Alternator
Part Number: 0PB-903-021-X
Porsche Porsche
Other Names: R P 0PB903021 X
Replaces: 9A2-603-022-X
Description: Remanufactued. 2.0, 2.5L. 2.5L remanufactured.
Fits:
  • Porsche:
    • 718 Boxster,
    • 718 Cayman,
    • 911
MSRP $1,037.62
$650.35
MSRP $1,037.62
$650.35
Alternator
Part Number: 997-603-022-GX
Porsche Porsche
Replaces: 997-603-022-BX, 997-603-022-CX, 997-603-022-DX, 997-603-022-EX, 997-603-022-FX
Description: Reman.
Fits:
  • Porsche:
    • 911
MSRP $2,146.32
$1,345.23
MSRP $2,146.32
$1,345.23
Alternator
Part Number: 928-603-049-00
Porsche Porsche
Other Names: Generator
Description: 928.
Fits:
  • Porsche:
    • 928
MSRP $952.19
$652.27
MSRP $952.19
$652.27
Alternator
Part Number: 068-903-017-NX
Volkswagen Volkswagen
Replaces: 068-903-017-N
Fits:
  • Volkswagen:
    • Fox,
    • Golf,
    • Jetta,
    • Scirocco
MSRP $602.10
$426.58
MSRP $602.10
$426.58
Alternator
Part Number: 068-903-029-Q
Volkswagen Volkswagen
Other Names: Generator
Description: 90 Amp.. New. Stamped #068 903 029Q.
Fits:
  • Volkswagen:
    • Golf
$0.01
$0.01
Alternator
Part Number: 06K-903-015-B
Volkswagen Volkswagen
Description: 180 amp, new.
Fits:
  • Volkswagen:
    • Arteon,
    • Atlas,
    • Golf R
MSRP $442.39
$316.31
MSRP $442.39
$316.31
Alternator
Part Number: 06K-903-015-D
Volkswagen Volkswagen
Description: 180 Amp.. 2022-23. new.
Fits:
  • Volkswagen:
    • Arteon
MSRP $393.28
$281.19
MSRP $393.28
$281.19
Alternator
Part Number: 06K-903-023-G
Volkswagen Volkswagen
Other Names: Alternator
Replaces: 06K-903-023-B, 06K-903-023-BX, 06K-903-023-GX
Description: 150 Amp. 2.0 Liter. From 02/26/2018. From 03/05/2018. To 01/13/2020. To 02/26/2018. To 03/04/2018. Fits Beetle, Beetle Convertible,...
Fits:
  • Volkswagen:
    • Beetle,
    • Golf R,
    • GTI,
    • Jetta,
    • Passat
MSRP $1,375.20
$974.33
MSRP $1,375.20
$974.33
Alternator
Part Number: 06K-903-026-C
Volkswagen Volkswagen
Description: Optional. 140A 2.0L/Valeo. New, valeo.
Fits:
  • Volkswagen:
    • Atlas Cross Sport,
    • Golf R,
    • GTI,
    • Jetta,
    • Passat,
    • Tiguan
MSRP $493.10
$349.36
MSRP $493.10
$349.36
Alternator
Part Number: 06K-903-026-L
Volkswagen Volkswagen
Replaces: 06K-903-026-B
Description: Optional. Seg. Bosch, 140A new. 140A 2.0L/Bosch. New, bosch, from 01/17/2021. To 11/01/2021. 140 Amp.. 2.0L, new.
Fits:
  • Volkswagen:
    • Atlas,
    • Atlas Cross Sport,
    • Golf R,
    • GTI,
    • Jetta,
    • Tiguan
MSRP $531.45
$376.53
MSRP $531.45
$376.53
Alternator
Part Number: 7B0-903-015-A
Volkswagen Volkswagen
Description: Routan. 4.0l.
Notes: Serviced Only As Complete Unit.
Fits:
  • Volkswagen:
    • Routan
MSRP $589.37
$385.45
MSRP $589.37
$385.45
Alternator
Part Number: 07C-903-021-K
Volkswagen Volkswagen
Other Names: Generator
Description: 190 Amp.
Fits:
  • Volkswagen:
    • Touareg
MSRP $954.92
$676.56
MSRP $954.92
$676.56
Alternator
Part Number: 07D-903-021
Volkswagen Volkswagen
Other Names: Generator
Description: 150 Amp.. New.
Fits:
  • Volkswagen:
    • Passat
MSRP $971.49
$688.30
MSRP $971.49
$688.30
Alternator
Part Number: 07K-903-023-CX
Volkswagen Volkswagen
Description: 140 Amp.. Reman.. Vendor:bosch.
Fits:
  • Volkswagen:
    • Beetle,
    • Jetta,
    • Passat
MSRP $792.68
$561.61
MSRP $792.68
$561.61

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