Product Summary

Many Engines, One Wire Alternator, V-Belt Belt Type

    Key Specs

    MFG. Part #37295

    Need To Know

    This Product Will Ship Free

    Shipping Policies & FAQs

    Quick and Easy Returns

    Return Policy


    Available in 100 and 140 Amp, the new Smooth-Look 12si alternator housings for early GM, have been optimized for superior polishing and chrome plating. Part of the exciting new Signature Series line of alternators and starters, all sharp lines and edges have been blended.

    All Smooth-Look units come with an exclusive nose cone that has a spherical shaped surface, detailed with the same features that match the case.


    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.


    MFG. Part #37295
    One Wire AlternatorYes
    Belt TypeV-Belt
    Alternator Case StyleGM 12SI
    Alternator Amperage150 amp
    Voltage Required12-Volt
    Alternator FinishChrome plated
    Alternator Pulley IncludedYes
    Belt Width0.375"
    Alternator Brackets IncludedNo
    Sold in QuantityEach
    GTIN Code692209010944
    Belt IncludedNo
    Pulley StyleV-belt
    Regulator StyleInternal
    Regulator IncludedYes