Product Summary

Universal Fit, One Wire Alternator, Internal Regulator

    See more details

    Key Specs

    MFG. Part #8-721
    One Wire AlternatorYes
    Alternator Amperage100 amp
    Alternator FinishPowder Coated
    Pulley StyleV-belt
    See more specs

    Need To Know

    Quick and Easy Returns

    Return Policy

    Powermaster 8-721 Details

    This kit mounts the alternator to the passenger side cylinder head area and drives off the front of the water pump with a 1V belt pulley system. This setup does not interfere with other belt drive systems already in use. The alternator produces 60 amps at low RPMs and 100 amps at racing speed.

    • Powermaster 8-721
    • CS121 Pro Series 100 Amp Kit for Circle Track
    • 1V pulley included
    • 60A at idle, 100A top end
    • True 1-wire hookup
    • Black finish
    • Includes:
      • 3:00 position alternator - 8072-3
      • Water pump pulley - 174
      • Alternator pulley - 181
      • Bracket - 722
      • Gates Belt - 7240

    Charts

    Warranty Information

    Click for details

    Do not send the unit back to Speedway Motors unless you have called Powermaster and talked to their Tech Department while the unit was still on the vehicle so they could help you troubleshoot the problem.

    Powermaster 8-721 Specifications

    KEY SPECS
    MFG. Part #8-721
    BrandPowermaster
    One Wire AlternatorYes
    Alternator Amperage100 amp
    Alternator FinishPowder Coated
    Pulley StyleV-belt
    GENERAL
    Alternator Case StyleGM CS121
    Voltage Required12-Volt
    RegulatorInternal
    Regulator IncludedYes
    Alternator Pulley IncludedYes
    Alternator Pulley Grooves1 V-groove
    Alternator Brackets IncludedYes
    ColorBlack
    Sold in QuantityEach
    NotesMade in the USA
    GTIN Code692209022602
    Belt IncludedYes
    Coating TypePowdercoated

    Questions & Answers

    Customer Impersonation Script