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J2 Fabrication Denso Hairpin Extreme Output Cobra

$475.00$615.00

The J2Fab 6 phase hairpin alternator is our premium offering.  Rated at 270A these 6phase units offer greater idle performance with a higher efficiency than our standard Motorcraft 3phase units.

  • 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 2lb lowers.  If you have a larger pulley or spin in excess of 7200rpm please contact us for pulley sizing.

270A J2Fab units require cable upgrade.
Link for cable upgrade install on 03/04 cobra – Cobra Big3 Install
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Additional information

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

Yes, No

Big3 Cable Kit

Yes, No