Product Summary

One Wire Alternator, V-Belt Belt Type, Powder Coated

  • Has a 12 volt, one-wire hook-up operation
  • Specifically designed for the 1949-53 Ford Flathead
  • Features a lamp terminal to allow dash light to function
  • Puts out 65 amp at idle, 75 amp when cruising, and 90 amps at the top end
  • Offers the output and reliability of a new alternator couples with classic looks

Key Specs

MFG. Part #82021-2
Alternator Amperage90 amp

Need To Know

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Return Policy

Powermaster 82021-2 Details

Get the look of a generator with the output and reliability of an alternator with this new PowerGEN Flathead Ford alternator from Powermaster. This alternator offers 12 volt one-wire hook-up, 90 amps output, Ford strap mounting design, internal regulartor, and v-belt pulley style.

  • One-wire operation
  • 12 volt
  • 65 amp idle, 75 amp cruise, 90 amp top end
  • For strap mounting design
  • Black powdercoated
  • Features lamp terminal to allow dash light to function
  • 1949-1953 Ford Flathead


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 82021-2 Specifications

MFG. Part #82021-2
Alternator Amperage90 amp
Speedway Motors Catalog Part #255-82021
One Wire AlternatorYes
Belt TypeV-Belt
Alternator Case StyleGenerator
Voltage Required12-Volt
Alternator FinishPowder Coated
Alternator Pulley IncludedYes
Belt Width0.625"
Alternator Brackets IncludedNo
Sold in QuantityEach
NotesFord strap mounting design with indicator lamp terminal.
GTIN Code692209016427
Belt IncludedNo
Pulley StyleV-belt
Regulator StyleInternal
Regulator IncludedYes
Coating TypePowdercoated