High output alternator for Freightliner M2

Discussion in 'Freightliner Forum' started by ki7mfb, Mar 27, 2026 at 1:54 PM.

  1. Mar 27, 2026 at 1:54 PM #1
    ki7mfb

    ki7mfb Bobtail Member

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    Hi everyone. 2013 M2 with a 6.7 cummins. I need to find an alternator around 300 amps. This is a fish hatchery stocking truck and we need the bigger alt to power aerator systems in the tanks. The stock alt was a 160 amp Delco # 8600201. Anybody know who might make a 300+ amp alternator for this truck?
    Thanks!!
     
    ki7mfb, Mar 27, 2026 at 1:54 PM
    ki7mfb, Mar 27, 2026 at 1:54 PM
    #1
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  3. Mar 27, 2026 at 3:29 PM #2
    mslashbar

    mslashbar Medium Load Member

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    elizabeth,co
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    You have a 28si series alt which only goes up to 200amps. To get 300 amps youl have to go to a 40si series like N15R-40P3001 or 8600298, but has a larger mounting pad.
     
    mslashbar, Mar 27, 2026 at 3:29 PM
    mslashbar, Mar 27, 2026 at 3:29 PM
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