Product Summary

Many Engines, One Wire Alternator, Chrome, Chrome

    Key Specs

    MFG. Part #182051
    One Wire AlternatorYes
    Alternator FinishChrome

    Need To Know

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    Powermaster 182051 Details

    If you like traditional looks and reliable, modern performance, you’ll love this cool GM long frame 1-wire alternator. It has the look of an original generator, but is really a 12-volt, negative-ground alternator that produces 65 amps at idle and 75 amps going down the road. This model is designed to fit GM applications up to 1964 models (except with generator mounted power steering pump) and features a simple one-wire hookup.

    We offer this one wire alternator in a beautiful chrome finish with included stock-appearing mounting brackets (the stock fan carrier bolts to that bracket) and pulleys that accept wide 3/8” belts.

    • GM long frame (7.1 field housing)
    • 65 amp idle, 75 amp cruise, 90 amp top end
    • Easy one-wire hookup
    • 3/8" wide belt pulley included
    • Some applications may require pulley transfer from original generator
    • Uses stock-appearing bracket and fan carrier bolts



    Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.

    Powermaster will provide technical support regarding warranty claims and inquiries directly to the purchaser to help resolve any warranty claims or necessary technical support for warranty resolution. Component or components can be returned to Speedway Motors as long as the product is still under warranty.

    All customer service inquiries pertaining to warranty and defect claims are to be handled by Speedway Motors if under one year street or 90 days race. If the product is out of warranty please contact Powermaster direct to discuss their repair and return program.

    Powermaster 182051 Specifications

    MFG. Part #182051
    One Wire AlternatorYes
    Alternator FinishChrome
    Alternator Case StyleGenerator
    Alternator Amperage90 amp
    Voltage Required12-Volt
    Regulator StyleInternal
    Regulator IncludedYes
    Alternator Pulley IncludedYes
    Belt TypeV-Belt
    Belt Width0.375"
    Alternator Brackets IncludedNo
    Overall Length10.59"
    Sold in QuantityEach
    Centerline of Holes6.61"
    NotesLong style housing generator without power steering mount or tachometer drive. One wire hookup only. Includes a 3/8 in. width pulley.
    GTIN Code692209011590
    Belt IncludedNo
    Pulley StyleV-belt
    Coating TypePlated