J2Fabrication 370A Extreme Plus 2011 and up 6.7 Powerstroke



The J2Fab 6 phase hairpin alternator is our premium offering. Rated at 370A these 6phase units offer greater idle output and efficiency than other aftermarket Powerstroke units making it the perfect match for your Ford Superduty.

  • 100% new components and direct bolt in case.
  • OEM Denso Regulator
  • Balanced rotor and 0 run-out slip rings to improve unit life and reliability
  • Heavy duty 12-80A diode twin rectifier plates
  • Improved air flow to ensure long service life in severe conditions
  • Koyo HD and NSK USA bearings.

This unit is suitable to support major audio component upgrades, lift pumps, lights, winch, etc.

If you select custom powder, be sure to specify your request in the order notes.  No Candies.

Additional information

Additional information

Weight 17 lbs
Dimensions 12 × 12 × 12 in


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Refund Policy
Due to the custom and many times built to order nature of J2Fabrication products we have an all sales final policy. Standard lead times unless otherwise specified on the product page or in discussion is 4wks. Any refund request granted is on a case by case basis at the discretion of J2Fab and may be subject to a 25% restocking fee. Orders cancelled before shipment are subject to a 15% cancellation fee. If you are looking to return a product for warranty work or maintenance, please email [email protected] with “RMA Request” in the subject line.