200Amp Alternator

I sell quality parts, with an honest rating, for a fair price! You won't get the full story from other sellers because they want your money. It takes power to make power. The more power an alternator can produce, the more power it will take from the engine. This is why performance companies sell pulley kits, slow the alternator down and it will draw less power from the engine. Back in the early 1980's Jim Vance of the Gates Rubber Company invented serpentine belt. The wider serpentine belt transmitted more power to the alternator, allowing for higher electrical output. However all belts have their limitations.
a single V-belt can only generate ~95amps before it will slip.
a 6rib belt can only generate ~180amps before it will slip.

There is no reason to have a 200amp alternator if it will only produce 180.

  • Every alternator I sell comes with its individual test sheet. Every alternator I build produces more power than the advertised rating (95amp or 160amp).
  • This is why I only sell the dual V-Belt pulley. You need to run BOTH to get the rated output.
  • For a while Ford offered a 215amp alternator made by Mitsubishi on its diesel ambulance option. However this alternator required an 8rib belt to generate that much power.
  • Currently Ford offers a dual 110amp alternator option on its Super Duty Trucks. An 8rib belt is still required to ensure full power from both alternators. However the dual alternator option is controlled by the ECM. The alternators will not work without the computer.
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