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  1. MECHMAN S Series Billet 170 amp 03/04 Cobra - Black Anodized - B8304170B
    $524.00

    MECHMAN S Series Billet 170 amp 03/04 Cobra - Black Anodized - B8304170B

    S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. These units are available for a broad range of domestic and import applications in 170, 240, or 320 amp configurations. This unit features an OEM 2.6" diamter pulley, making it great for racing applications using the stock diamter crankshaft pulley.  If changes have been made to the diamter of the crankshaft pulley on the engine, please contact a sales associate for assistance with calculating pulley ratio.

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  2. MECHMAN S Series Billet 170 amp 03/04 Cobra - Machined finish - B8304170M
    $519.00

    MECHMAN S Series Billet 170 amp 03/04 Cobra - Machined finish - B8304170M

    S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. These units are available for a broad range of domestic and import applications in 170, 240, or 320 amp configurations. The 240 amp model offers the best balance between peak output, and output at engine idle RPM.

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  3. MECHMAN S Series Billet 240 amp 03/04 Cobra - Black Anodized - B8304240B
    $574.00

    MECHMAN S Series Billet 240 amp 03/04 Cobra - Black Anodized - B8304240B

    S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. This unit features an OEM 2.6" diamter pulley, making it great for racing applications using the stock diamter crankshaft pulley.  If changes have been made to the diamter of the crankshaft pulley on the engine, please contact a sales associate for assistance with calculating pulley ratio.

    Learn More
  4. MECHMAN S Series Billet 240 amp 03/04 Cobra - Machined finish - B8304240M
    $549.00

    MECHMAN S Series Billet 240 amp 03/04 Cobra - Machined finish - B8304240M

    S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. These units are available for a broad range of domestic and import applications in 170, 240, or 320 amp configurations. The 240 amp model offers the best balance between peak output, and output at engine idle RPM.

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  5. J2 Fabrication Denso-Style Hairpin EXTREME OUTPUT Alternator (03-04 Cobra, GT500, Coyote & 3V)
    $500.00

    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 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


    270A J2Fab units REQUIRE cable upgrade.

    Call for availability, could potentially take up to 2 weeks to ship.

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  6. J2 Fabrication Denso Hairpin High-Output Alternator (03/04 Cobra)
    $400.00

    Rated at 185A peak these units offer greater idle performance (up to 140A) with a higher efficiency than our standard Motorcraft 3phase units making them the perfect replacement for our highly successful 200A 6G product line.
    When compared to our 200A 6G this unit has an idle output 27% greater, will reach peak output 50% sooner, and will hold its peak output longer making it superior to the old J2Fab-200A and any other 3G or 6G Cobra unit in every practical way

    Ideal for cars with high draw from fuel system, A2W trunk mounted pump, H/E fans, stereo, or OEM Cobra’s just looking for an upgrade/replacement with much greater longevity and resistance to overheating!

    Customers running a combination of fuel system, Stewart EMP, electric WP, H/E fans and more, please see our 270A Extreme Output.

    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 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.

    185A J2Fab units REQUIRE cable upgrade. Call for availability, could potentially take up to 2 weeks to ship.

    Learn More

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