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J2 Fabrication Denso Hairpin Extreme Output 1999-2004 Mustang GT $500.00 – $670.00
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J2 Fabrication Denso Hairpin Extreme Output Cobra

$500.00 – $680.00

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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 available for your 03/04 Cobra.

  • 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 12-80A diode twin copper rectifier plates
  • Improved air flow to ensure long service life in severe conditions
  • NTN premium and NSK USA bearings.

This unit ships with a 69mm pulley and is suitable for stock to 6LB lowers. If you have a larger pulley or spin in excess of 7600rpm with a 6LB lower please specify in your order notes or tell your sales representative when placing your order. No RPM limitation on stock, 2lb, or 4lb lower pulley.

300A 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.