If you like traditional looks and reliable, modern performance, you’ll love this cool Flathead alternator. It has the look of an original generator, but is really a 6-volt, positive-ground alternator that produces 60 amps at idle and 75 amps going down the road. This 1-wire alternator is designed to fit 1949-1953 Ford & Mercury Cars and 1948-1953 Ford Trucks with Flathead V8s and features a simple one-wire hookup.
We offer it in black painted or polished aluminum, and both include stock-appearing mounting brackets (the stock fan carrier bolts to that bracket) and pulleys that accept wide 5/8” belts.
- Easy one-wire hookup
- 5/8" wide belt pulley included
- If using 3/8" wide belt, order pulley # 91067178
- Uses stock-appearing bracket and fan carrier bolts
Flathead One Wire Alternator Instructions (PDF)
Powergen Cutaway View (Link)
Flathead One Wire Alternator Specifications (Link)
- 60 amps @ idle speed
- 75 amps @ road speed
- Case can be shortened for additional clearance
- Case diameter is 1/4" larger than a stock generator
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 all warranty service and technical support
regarding warranty claims and inquiries directly to the purchaser to
resolve any warranty claims or necessary technical support for warranty
resolution. Speedway Motors is not able to service, warranty, or
replace any unit that has a warranty consideration. As such, the
component or components are to be returned to Powermaster and not to
All customers service inquiries pertaining to warranty and defect claims
are to be directed to Powermaster and not to Speedway Motors:
Powermaster Customer & Tech Support
Phone: (630) 957-4019
Any Powermaster product that is returned directly to Speedway Motors
that is not in a new condition, and that is being returned for warranty
replacement or refund consideration will be immediately forwarded on to
Powermaster from Speedway Motors on behalf of the purchaser with no
further action taken until received by Powermaster. Powermaster will
then will provide both the purchaser and Speedway Motors with final
resolution as to the warranty claim.