J2 Fabrication Denso Hairpin Extreme Output 1999-2004 Mustang GT



The J2Fab 6 phase hairpin alternator is our premium offering.  Rated at 300A these 6phase units offer greater idle performance with a higher efficiency than any other unit for your Mustang GT.

  • 100% new components and direct bolt in case.
  • Custom rotor/stator to decrease air gap to improve idle output.
  • Balanced rotor and 0 run-out slip rings to improve unit life and eliminate battery light flicker.
  • Heavy duty 12 diode twin rectifier plates
  • Improved air flow to ensure long service life in severe conditions
  • NTN premium and NSK USA bearings.

This unit features an OEM diameter pulley.  This pulley is suitable for stock and overdrive dampers. No RPM limit on Extreme output alternators.

270A J2Fab units require cable upgrade.
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Additional information

Additional information

Weight 16.5 lbs
Dimensions 9 × 9 × 13 in
Add Black Powdercoat

Yes, No

Big3 Cable Kit

Yes, No

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.