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  • 558-326_01.jpg
    Holley EFI
    LS Ignition Coil Harness; 36 in. Long Extension;
    $103.00
    $103.00
    $103.00
    Designed to extend your factory coil harness, allowing you to easily remote mount your LS ignition coils. These 36 in. long ignition coil extension harnesses are perfect for anyone wanting to remot...
  • 558-325_02.jpg
    Holley EFI
    Pro-Billet Ignition Adapter; For Use w/Terminator X EFI;
    $28.89
    $32.10
    $28.89
    Designed to plug and play with MSD Pro-Billet distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104.
  • 558-323_0119269.jpg
    Holley EFI
    Hyperspark Ignition Adapter
    $29.46
    $32.73
    $29.46
    Designed to plug and play with HyperSpark distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104.
  • 558-321_0118129.jpg
    Holley EFI
    LS Ignition Coil Harness; Factory Replacement For Stock LS Coils;
    $185.00
    $185.00
    $185.00
    Are you tired of scouring the junkyard for stock ls coil sub harnesses? Introducing the new Holley EFI LS Coil Sub Harness. This coil sub harness is intended to be used with factory LS coils and va...
  • 558-318.jpg
    Holley EFI
    Coil-Near-Plug Ignition Sub Harness
    $208.95
    $233.00
    $208.95
    "Big Wire" Sub Harness- pre wired with 12ga power and grounds, for optimal performance!
  • 558-317.jpg
    Holley EFI
    Holley Ignition Coil Harness; For Use w/Ford Coyote Engines w/HP/Dominator;
    $190.00
    $190.00
    $190.00
    Holley Ignition Coil Harness; For Use w/Ford Coyote Engines w/HP/Dominator;
  • 558-315.jpg
    Holley EFI
    Holley Ignition Coil Harness; For Use w/Ford 4V Modular Engines;
    $179.95
    $200.00
    $179.95
    Coil harness for 99-04 4 Valve Ford Modular (4.6 & 5.4L) Engines.
  • 558-314.jpg
    Holley EFI
    Holley Ignition Coil Harness; For Use w/Ford 2V Modular Engines;
    $200.00
    $200.00
    $200.00
    Coil harness for 99-04 2 Valve Ford Modular (4.6 & 5.4L) Engines.
  • 558-313.jpg
    Holley EFI
    Holley EFI Ignition Adapter Harness; For Use w/FAST Dual Sync Distributors;
    $31.52
    $31.52
    $31.52
    The Holley EFI Ignition Adapter Harness for FAST Dual Sync Distributors allows easy connectivity of the Holley EFI wiring harness to the FAST Dual Sync Distributors.
  • large558-312.jpg
    Holley EFI
    HP Smart Coil Ignition Harness
    $186.95
    $208.00
    $186.95
    HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart...
  • 558-311.jpg
    Holley EFI
    HEMI Coil Harness; Fits w/Gen III Hemi Late Coils;
    $164.00
    $164.00
    $164.00
    Chrysler has used two different coils on the HEMI engine series with 2006 being the year that the change was phased throughout the truck and car line. Fortunately the two coils are very different v...
  • 558-309.jpg
    Holley EFI
    Wire Harness Adapter
    $112.00
    $112.00
    $112.00
    This kit contains plug-and-play harnesses to connect Holley 24x or 58x main harness to Holley waste-fire DIS coils. Not compatible with 556-112 coil near plug smart coils (see 558-312 for 556-112 ...
  • 558-308.jpg
    Holley EFI
    Main Power Ignition Harness
    $81.77
    $90.86
    $81.77
    This Harness is required with HP or Dominator ECUs. Includes, 13 long, 10 AWG main power harness, Qty. (2) 3/8 in. ring terminals and shrink tube (not pictured) . The harness is fuse protected an...
  • large558-307.jpg
    Holley EFI
    Universal Coil On Plug Harness; For Use w/HP Or Dominator; Fits w/PN[558-312];
    $138.95
    $155.00
    $138.95
    Universal Coil On/Near Plug Harness €" Use to connect Holley PN 558-312 or factory GM LSx coil harnesses to Holley HP or Dominator ECUs
  • 558-306.jpg
    Holley EFI
    Universal Unterminated Ignition Harness; For HP EFI And Dominator EFI;
    $152.95
    $170.00
    $152.95
    Universal Unterminated Ignition Harness; For HP EFI And Dominator EFI;
  • 558-305.jpg
    Holley EFI
    TFI Ignition Harness; For Use w/Avenger EFI/HP EFI/Dominator EFI Systems;
    $96.66
    $108.00
    $96.66
    TFI Ignition Harness; For Use w/Avenger EFI/HP EFI/Dominator EFI Systems;
  • 558-304.jpg
    Holley EFI
    HEI Ignition Harness; Small Cap;
    $41.17
    $45.74
    $41.17
    HEI Ignition Harness; Small Cap;
  • 558-303.jpg
    Holley EFI
    Magnetic Pickup Ignition Harness
    $76.72
    $85.24
    $76.72
    Magnetic Pickup Ignition Harness; For HP EFI/Dominator EFI Systems; Shielded; Unterminated;
  • 558-302.jpg
    Holley EFI
    Tach Input Ignition Adapter
    $19.50
    $19.50
    $19.50
    Tach Input Ignition Adapter; For Use On Applications Using A CD Box; Plugs Into [Ignition] Connector On Main Harness; Yellow/Black Lead Connects To [Tach Out] Terminal;
  • 558-118.jpg
    Holley EFI
    Coil On Plug Wire Harness
    $502.95
    $559.00
    $502.95
    This harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor ...
  • 558-117.jpg
    Holley EFI
    Universal Coil On Plug Harness
    $475.95
    $529.00
    $475.95
    This harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor ...
  • 558-113.jpg
    Holley EFI
    Main Power Ignition Harness; For Use w/99-04 Ford Modular w/Smart Coils;
    $661.95
    $736.00
    $661.95
    Main Harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart Coils
  • 556-163_01.jpg
    Holley EFI
    EFI Smart Coil Set; Black; 12 - 16 Volts; Fits GEN III Hemi; 8 Set;
    $566.95
    $630.00
    $566.95
    These Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Heres the difference over a stock coil; they produce more spark energy while consuming less po...
  • 556-162_01.jpg
    Holley EFI
    EFI Smart Coil; Black; 12 - 16 Volts; Fits GEN III Hemi;
    $78.70
    $87.44
    $78.70
    These Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Heres the difference over a stock coil; they produce more spark energy while consuming less po...

Showing 985 -1008 of 2177 items