Powermaster PowerGEN 1939-48 Flathead Ford Alternator, Plain 12- Volt


If you like traditional looks and modern performance, you’re gonna love this cool Flathead 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.

Designed to fit 1939-1948 Ford & Mercury Cars and 1939-1947 Ford Trucks with Flathead V8s. These feature a simple one-wire hookup and are available in black or polished aluminum.



  • 75 amps max
  • 7″ length from front to back
  • The case can be shortened for additional clearance
  • Case diameter is 1/4″ larger than a stock generator