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Ignitions and Electrical

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    Holley HLY558-433 Wiring Harness - EFI Digital Dash I/O Adapter

    Holley

    Description: The Holley HLY558-433 Wiring Harness is designed specifically for use with EFI Digital Dash systems. This kit provides the necessary c...

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    $357.95 - $357.95
    $357.95
    $374.95
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    $374.95
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    $159.25 - $159.25
    $159.25
    $183.95
    $183.95 - $183.95
    $183.95

    Holley HLY558-407 Multi Map Selector

    Holley

    Description: The Holley HLY558-407 Multi Map Selector is an ECM Calibration Select Switch designed for use with Holley Dominator EFI systems. This ...

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    $159.25 - $159.25
    $159.25
    $183.95
    $183.95 - $183.95
    $183.95
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    $161.95 - $161.95
    $161.95
    $186.95
    $186.95 - $186.95
    $186.95

    Holley HLY558-403 J3 Connector & Harness

    Holley

    Description: The Holley HLY558-403 J3 Connector & Harness is designed for use with Dominator EFI systems. This wiring harness features a J3 aux...

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    $161.95 - $161.95
    $161.95
    $186.95
    $186.95 - $186.95
    $186.95
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  • Sold out
    $179.95 - $179.95
    $179.95
    $207.95
    $207.95 - $207.95
    $207.95

    Holley HLY558-311 Hemi Coil Harness Late TYCO

    Holley

    Description: The Holley HLY558-311 Hemi Coil Harness is designed for use with Mopar Gen III Hemi engines. This EFI wiring harness specifically cate...

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    $179.95 - $179.95
    $179.95
    $207.95
    $207.95 - $207.95
    $207.95
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    $184.45 - $184.45
    $184.45
    $212.95
    $212.95 - $212.95
    $212.95

    Holley HLY558-213 Injector Harness Ford w/ Jetronic Injectors

    Holley

    Description: Constructed with quality materials, this harness is built to withstand the demands of automotive applications. Key Features: Com...

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    $184.45 - $184.45
    $184.45
    $212.95
    $212.95 - $212.95
    $212.95
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    $230.95
    $230.95 - $230.95
    $230.95
    $207.95
    $207.95 - $207.95
    $207.95

    Holley HLY558-207 Injector Harness - 16 Injectors - Unterminated

    Holley

    Description: The Holley HLY558-207 Injector Harness is designed for use with Bosch EV1 style injectors and is compatible with Holley HP and Dominat...

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    $230.95 - $230.95
    $230.95
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    $207.95 - $207.95
    $207.95
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  • Sold out
    $207.85 - $207.85
    $207.85
    $239.95
    $239.95 - $239.95
    $239.95

    Holley HLY558-204 EFI Injector Harness - Universal Unterminated

    Holley

    Description: The Holley HLY558-204 EFI Injector Harness is a universal unterminated harness designed for use with Bosch terminal ends. This kit is ...

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    $207.85 - $207.85
    $207.85
    $239.95
    $239.95 - $239.95
    $239.95
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  • Sold out
    $151.15 - $151.15
    $151.15
    $173.95
    $173.95 - $173.95
    $173.95

    Holley HLY558-132 Sub-Harness Mopar Gen-3 Hemi VVT & SRV

    Holley

    Description: The Holley HLY558-132 Sub-Harness is designed specifically for the Mopar Gen-3 Hemi engines, featuring Variable Valve Timing (VVT) and...

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    $151.15 - $151.15
    $151.15
    $173.95
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    $173.95
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    $213.25 - $213.25
    $213.25
    $249.95
    $249.95 - $249.95
    $249.95

    Holley HLY558-127 Bench-Top EFI Test Harness

    Holley

    Description: The Holley HLY558-127 Bench-Top EFI Test Harness is designed for testing EFI systems in a controlled environment. This wiring harness ...

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    $213.25 - $213.25
    $213.25
    $249.95
    $249.95 - $249.95
    $249.95
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  • Sold out
    $583.95 - $583.95
    $583.95
    $675.95
    $675.95 - $675.95
    $675.95

    Holley HLY558-118 Ford MPFI Coil On Plug Main Harness

    Holley

    Description: This coil-on-plug main harness facilitates the connection of ignition coils to the engine's electronic control unit, ensuring proper...

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    $583.95 - $583.95
    $583.95
    $675.95
    $675.95 - $675.95
    $675.95
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  • Sold out
    $718.95 - $718.95
    $718.95
    $849.95
    $849.95 - $849.95
    $849.95

    Holley HLY558-108 Main Harness 99-04 Ford Modular Engine

    Holley

    Description: With a focus on quality and precision, this harness is built to meet the demands of modern automotive applications. Key Features: ...

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    $718.95 - $718.95
    $718.95
    $849.95
    $849.95 - $849.95
    $849.95
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  • Sold out
    $583.95 - $583.95
    $583.95
    $675.95
    $675.95 - $675.95
    $675.95

    Holley HLY558-101 TPI Stealth RAM Main Harness

    Holley

    Description: The Holley HLY558-101 TPI Stealth Ram Main Harness is designed for use with various GM applications. This EFI wiring harness is compat...

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    $583.95 - $583.95
    $583.95
    $675.95
    $675.95 - $675.95
    $675.95
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