Alternators

If the alternator you're using now burns out too fast, it's a sign that the alternator is under-powered for it's application, and the only right way to address the power issue is with a high output alternator.  When the electrical load of all the extra accessories you add up increases significantly, your stock alternator fails to handle that.  Big systems demand big power, and a high quality performance alternator is something you won't regret buying.  

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  1. Sinister Diesel 250 Amp OEM High Output Alternator - Duramax 6.6L 2001-2007
    Special Price $529.00 was $687.70

    Sinister Diesel 250 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Includes:

    • High Output 250 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
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  2. Sinister Diesel 200 Amp OEM High Output Alternator - Powerstroke 7.3L 1999-2003
    Special Price $429.00 was $557.70

    Sinister Diesel 200 Amp OEM Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings
    • 1-Year Warranty

    Includes:

    • High Output 200 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
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  3. Sinister Diesel 200 Amp OEM High Output Alternator - Powerstroke 6.0L 2003-2007
    Special Price $429.00 was $557.70

    Sinister Diesel 200 Amp OEM Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Includes:

    • High Output 200 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
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  4. Sinister Diesel 200 Amp OEM High Output Alternator - Powerstroke 6.0L 2003-2007 (Gray)
    Special Price $429.00 was $557.70

    Sinister Diesel 200 Amp OEM Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Gray
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Includes:

    • High Output 200 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
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  5. Sinister Diesel 250 Amp OEM High Output Alternator - Powerstroke 7.3L 1999-2003
    Special Price $699.00 was $908.70

    Sinister Diesel 250 Amp OEM High Output Alternator

    Features and Benefits:

    • CNC Machined Billet Front End
    • Anodized in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Includes:

    • High Output 250 Amp Alternator
    • Pigtail Connector
    Learn More
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  6. Sinister Diesel 250 Amp OEM High Output Alternator - Powerstroke 6.0L 2003-2007
    Special Price $699.00 was $908.70

    Sinister Diesel 250 Amp OEM High Output Alternator

    Features and Benefits:

    • CNC Machined Billet Front End
    • Anodized in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High Temperature Bearings

    Includes:

    • High Output 250 Amp Alternator
    • Pigtail Connector

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
    Quick Shop Compare
  7. Sinister Diesel 320 AMP OEM High Output Alternator - Powerstroke 6.0L 2003-2007
    Special Price $599.00 was $778.70

    Sinister Diesel 320 AMP OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
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  8. Sinister Diesel 320 Amp OEM High Output Alternator - Powerstroke 6.4L 2008-2010
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
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  9. Sinister Diesel 320 Amp OEM High Output Alternator - Powerstroke 6.7L 2011-2016
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
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  10. Sinister Diesel High Amp (400A) Wiring Upgrade Kit
    Special Price $99.00 was $119.00

     Upgrade Your Alternator Charge Cable, Alternator Ground Cable, and Chassis Ground Cable

    Kit Includes:

    • 10 feet of Black OFC Zero gauge ultra flexible ground cable
    • 7 feet of Red OFC Zero gauge ultra flexible positive cable 
    • ANL Fuse holder
    • 400 amp ANL fuse 
    • (8) heavy duty set-screw type "no crimp" cable ends with 5/16" diameter hole
    • (8) 2" heat shrink sealing tubes
    • (12) Zip Ties
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  11. Sinister Diesel 250 Amp OEM High Output Alternator - Duramax 6.6L 2008-2012
    Special Price $529.00 was $687.70

    Sinister Diesel 250 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings
    • 1 Year Warranty

    Includes:

    • High Output 250 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
    Quick Shop Compare
  12. Sinister Diesel 320 Amp OEM High Output Alternator - Duramax 6.6L 2001-2007
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
    Quick Shop Compare
  13. Sinister Diesel 320 Amp OEM High Output Alternator - Duramax 6.6L 2008-2012
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings
    • 1 Year Warranty

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
    Quick Shop Compare
  14. Sinister Diesel 320 Amp OEM High Output Alternator - Duramax 6.6L 2013-2017
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator 

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings
    • 1 Year Warranty

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
    Quick Shop Compare
  15. Sinister Diesel 320 Amp OEM High Output Alternator - Cummins 5.9L 1988-2002
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings
    • 1 Year Warranty

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
    Quick Shop Compare
  16. Sinister Diesel 320 Amp OEM High Output Alternator - Cummins 5.9L 2003-2007
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings
    • 1 Year Warranty

    Includes:

    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

    Learn More
    Quick Shop Compare
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