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  1. HOL-558-503 PART NUMBER
    HOLLEY 558-503 GM TPI AND STEALTH RAM EFI HARNESS KIT
    HOLLEY 558-503 GM TPI AND STEALTH RAM EFI HARNESS KIT
    $899.95

    GM TPI AND STEALTH RAM EFI HARNESS KIT
    GM TPI and Holley Stealth Ram

     

     

     

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  2. HOL-550-607 PART NUMBER
    HOLLEY 550-607 HP EFI ECU & HARNESS KITS
    HOLLEY 550-607 HP EFI ECU & HARNESS KITS
    $2,849.95

    HP EFI ECU & HARNESS KITS
    GM LS2/3/7 (58x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor

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  3. HOL-550-617 PART NUMBER
    HOLLEY 550-617 HP EFI ECU & HARNESS KITS
    HOLLEY 550-617 HP EFI ECU & HARNESS KITS
    $3,299.95

    HP EFI ECU & HARNESS KITS
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic "Bosch Style" injector harness - Bosch Wideband O2

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  4. HOL-550-616N PART NUMBER
    HOLLEY 550-616N HP EFI ECU & HARNESS KITS
    HOLLEY 550-616N HP EFI ECU & HARNESS KITS
    $3,549.95

    HP EFI ECU & HARNESS KITS
    Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit - Jetronic "Bosch Style" injector harness - Includes NTK Oxygen Sensor

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  5. HOL-558-505 PART NUMBER
    HOLLEY 558-505 FORD MODULAR 2 VALVE EFI HARNESS KIT
    HOLLEY 558-505 FORD MODULAR 2 VALVE EFI HARNESS KIT
    $1,599.95

    FORD MODULAR 2 VALVE EFI HARNESS KIT
    1999-2004 Ford Modular 2 Valve Harness Kit

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  6. HOL-550-601N PART NUMBER
    HOLLEY 550-601N HP EFI ECU & HARNESS KITS
    HOLLEY 550-601N HP EFI ECU & HARNESS KITS
    $2,999.95

    HP EFI ECU & HARNESS KITS
    GM TPI and Holley Stealth Ram™, Includes NTK Oxygen Sensor

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  7. HOL-558-465 PART NUMBER
    HOLLEY 558-465 HOLLEY EFI CAN SPLITTER
    HOLLEY 558-465 HOLLEY EFI CAN SPLITTER
    $49.95

    HOLLEY EFI CAN SPLITTER
    Part # 558-465

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  8. HOL-558-212 PART NUMBER
    HOLLEY 558-212 FORD V8 INJECTOR HARNESS
    HOLLEY 558-212 FORD V8 INJECTOR HARNESS
    $207.95

    FORD V8 INJECTOR HARNESS
    Evenly spaced Ford V8 Injector Harness for USCAR / EV6 style Injectors

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  9. HOL-558-326 PART NUMBER
    HOLLEY 558-326 FORD V8 INJECTOR HARNESS
    HOLLEY 558-326 FORD V8 INJECTOR HARNESS
    $134.95

    LS COIL EXTENSION HARNESSES
    Designed to extend your factory coil harness, allowing you to easily remote mount your LS ignition coils.

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  10. HOL-558-128 PART NUMBER
    HOLLEY 558-128 5.0L FORD ENGINE MAIN HARNESS
    HOLLEY 558-128 5.0L FORD ENGINE MAIN HARNESS
    $584.95

    5.0L FORD ENGINE MAIN HARNESS
    Plug and Play with fuel injected 5.0L Small Block Ford Engines

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