Holley EFI Holley EFI 558-200 - Bosch Style Connector Harness MSRP: $224.95 Was: Now: $203.99 Add to Cart
Holley EFI Holley EFI 558-204 - Fuel Injection Wire Harness MSRP: $233.95 Was: Now: $210.99 Add to Cart
Holley EFI Holley EFI 558-116 - Gen III HEMI Main Harness Late w/ TPS and Idle Air Control Connections MSRP: $899.95 Was: Now: $799.95 Add to Cart
Holley EFI Holley EFI 558-125 - EFI Ford Coyote TI-VCT Sub Wiring Harness MSRP: $449.95 Was: Now: $399.95 Add to Cart
Holley EFI Holley EFI 558-126 - Unterminated Main Engine Wire Harness MSRP: $479.95 Was: Now: $425.95 Add to Cart
Holley EFI Holley EFI 558-118 - Coil On Plug Wire Harness MSRP: $731.95 Was: Now: $649.95 Add to Cart
Holley EFI Holley EFI 558-121 - Terminator® Stealth Series Main Harness MSRP: $562.95 Was: Now: $499.95 Add to Cart
Holley EFI Holley EFI 558-117 - Universal Coil On Plug Harness MSRP: $674.95 Was: Now: $599.95 Add to Cart
Holley EFI Holley EFI 558-122 - EFI Ford Coyote TI-VCT Engine Main Wiring Harness MSRP: $1,068.95 Was: Now: $949.95 Add to Cart
Holley EFI Holley EFI 558-404 - Dominator EFI Connector J4 Auxiliary Harness MSRP: $253.95 Was: Now: $227.99 Add to Cart
Holley EFI Holley EFI 558-306 - Universal Unterminated Ignition Harness MSRP: $206.95 Was: Now: $120.99 Add to Cart
Holley EFI Holley EFI 558-403 - Dominator EFI Connector J3 Auxiliary Harness MSRP: $197.95 Was: Now: $184.99 Add to Cart
Holley EFI Holley EFI 558-323 - Hyperspark Ignition Adapter MSRP: $74.79 Was: Now: $67.99 Add to Cart
Holley EFI Holley EFI 558-322 - TI-VCT Coil ECM Wire Harness MSRP: $281.95 Was: Now: $249.95 Add to Cart
Holley EFI Holley EFI 558-400 - Connector J1A/B Input/Outputs Auxiliary Harness MSRP: $143.95 Was: Now: $140.99 Add to Cart
Holley EFI Holley EFI 558-402 - Dominator EFI Connector J2B Auxiliary Harness MSRP: $197.95 Was: Now: $184.99 Add to Cart
Holley EFI Holley EFI 558-401 - Dominator EFI Connector J2A Auxiliary Harness MSRP: $257.95 Was: Now: $231.99 Add to Cart
Holley EFI Holley EFI 558-319 - EFI Ford Coyote TI-VCT Main Power Wiring Harness MSRP: $92.39 Was: Now: $83.99 Add to Cart
Holley EFI Holley EFI 558-318 - Coil-Near-Plug Ignition Sub Harness MSRP: $322.95 Was: Now: $286.95 Add to Cart
Holley EFI Holley EFI 558-200 - Bosch Style Connector Harness Holley EFI - 558-200V8 over Manifold, Bosch Style Injector HarnessV8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI, Dominator EFI and Terminator X. GM / Chrysler Cylinder... MSRP: $224.95 Was: Now: $203.99 Add to Cart
Holley EFI Holley EFI 558-204 - Fuel Injection Wire Harness Holley EFI - 558-204Universal Unterminated Injector HarnessFuel Injection Wire Harness; Universal Unterminated; Bosch EV1 Style; For HP EFI/Dominator EFI Fuel Injection Systems;Universal Unterminated... MSRP: $233.95 Was: Now: $210.99 Add to Cart
Holley EFI Holley EFI 558-128 - EFI Engine Main Harness Holley EFI - 558-128Holley EFI Ford Foxbody Main HarnessHolley EFI Engine Main Harness; For Use w/5.0 Small Block Ford Engines;This harness is for fuel injected small block ford engines, such as 5... MSRP: $618.95 Was: Now: $549.95 Add to Cart
Holley EFI Holley EFI 558-116 - Gen III HEMI Main Harness Late w/ TPS and Idle Air Control Connections Holley EFI - 558-116Gen III HEMI Main Harness Late w/ TPS and Idle Air Control ConnectionsGen III HEMI Main Harness w/Throttle Position Sensor & Idle Air Control, For Late Crank & Cam Sensors, for HP... MSRP: $899.95 Was: Now: $799.95 Add to Cart
Holley EFI Holley EFI 558-125 - EFI Ford Coyote TI-VCT Sub Wiring Harness Holley EFI - 558-125Holley EFI Ford Coyote Ti-VCT Sub Harness (2013-2017)Holley EFI Ford Coyote TI-VCT Sub Wiring Harness; Plug And Play Harness; For Use w/PN[558-319];Introducing Coyote Twin... MSRP: $449.95 Was: Now: $399.95 Add to Cart
Holley EFI Holley EFI 558-126 - Unterminated Main Engine Wire Harness Holley EFI - 558-126Unterminated Main Engine Wire Harness; Incl. Both J1A and J1B Connectors Full Terminated w/15 ft. Flying Lead Wiring;The unterminated main harness comes with both J1A and J1B... MSRP: $479.95 Was: Now: $425.95 Add to Cart
Holley EFI Holley EFI 558-118 - Coil On Plug Wire Harness Holley EFI - 558-118Ford MPFI Coil On Plug Main HarnessCoil On Plug Wire Harness; Plug And Play Harness; For Use w/PN[558-312/558-318]; Pre-Terminated For Pulse Width Modulated Idle Air Control;This... MSRP: $731.95 Was: Now: $649.95 Add to Cart
Holley EFI Holley EFI 558-121 - Terminator® Stealth Series Main Harness Holley EFI - 558-121Terminator® Stealth Series Main Harness; 2x4; EFI Upgrade; Plug and Play;Introducing 2x4 Terminator Stealth EFI upgrade components. The wait is over. These upgrade components... MSRP: $562.95 Was: Now: $499.95 Add to Cart
Holley EFI Holley EFI 558-117 - Universal Coil On Plug Harness Holley EFI - 558-117Universal MPFI Coil On Plug Main HarnessUniversal Coil On Plug Harness; Plug And Play Harness; For Use w/PN[558-312/558-318];This harness provides a plug and play upgrade solution... MSRP: $674.95 Was: Now: $599.95 Add to Cart
Holley EFI Holley EFI 558-122 - EFI Ford Coyote TI-VCT Engine Main Wiring Harness Holley EFI - 558-122Holley EFI Coyote Ti-VCT Main Harness for Holley EFI HP Smart Coils (2011-2017)Holley EFI Ford Coyote TI-VCT Engine Main Wiring Harness; Plug And Play Harness; Incl. Ford TPS/IAC... MSRP: $1,068.95 Was: Now: $949.95 Add to Cart
Holley EFI Holley EFI 558-305 - TFI Ignition Harness Holley EFI - 558-305Ford TFI Ignition HarnessTFI Ignition Harness; For Use w/Avenger EFI/HP EFI/Dominator EFI Systems;Ford TFI Ignition Adapter HarnessFord TFI Ignition HarnessUse w/Avenger EFI HP... MSRP: $141.95 Was: Now: $139.99 Add to Cart
Holley EFI Holley EFI 558-404 - Dominator EFI Connector J4 Auxiliary Harness Holley EFI - 558-404Dominator EFI Connector J4 Auxiliary Harness;J4 ECU Connector26 User Programmable Inputs and OutputsDominator EFI Connector J4 Auxiliary HarnessBrand: Holley EFICategory:... MSRP: $253.95 Was: Now: $227.99 Add to Cart
Holley EFI Holley EFI 558-306 - Universal Unterminated Ignition Harness Holley EFI - 558-306Universal Unterminated Ignition Harness; For HP EFI And Dominator EFI;Universal Unterminated Ignition Harness for HP EFI & Dominator EFIUniversal Unterminated Ignition... MSRP: $206.95 Was: Now: $120.99 Add to Cart
Holley EFI Holley EFI 558-403 - Dominator EFI Connector J3 Auxiliary Harness Holley EFI - 558-403Dominator EFI Connector J3 Auxiliary Harness;J3 ECU Connector17 User Programmable Inputs and OutputsDominator EFI Connector J3 Auxiliary HarnessBrand: Holley EFICategory:... MSRP: $197.95 Was: Now: $184.99 Add to Cart
Holley EFI Holley EFI 558-321 - LS Ignition Coil Harness Holley EFI - 558-321LS Ignition Coil HarnessFactory replacement coil harness for stock LS coils, does not fit LS1 or LS6 Coils.Are you tired of scouring the junkyard for stock ls coil sub harnesses?... MSRP: $224.95 Was: Now: $199.95 Add to Cart
Holley EFI Holley EFI 558-323 - Hyperspark Ignition Adapter Holley EFI - 558-323Hyperspark Ignition Adapter; To Holley EFI Main Harnesses; For Use w/Terminator X EFI;Designed to plug and play with HyperSpark distributors and Holley EFI main harnesses with an... MSRP: $74.79 Was: Now: $67.99 Add to Cart
Holley EFI Holley EFI 558-322 - TI-VCT Coil ECM Wire Harness Holley EFI - 558-322Ford Coyote Ti-VCT Coil Harness (2015.5-2017)TI-VCT Coil ECM Wire Harness; Ignition Harness Type;Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI!... MSRP: $281.95 Was: Now: $249.95 Add to Cart
Holley EFI Holley EFI 558-400 - Connector J1A/B Input/Outputs Auxiliary Harness Holley EFI - 558-400Connector J1A/B Input/Outputs Auxiliary Harness; For HP EFI And Dominator EFI Systems;This harness connects to the (8) pin Metri-Pack Input/Output connector located in most Holley... MSRP: $143.95 Was: Now: $140.99 Add to Cart
Holley EFI Holley EFI 558-402 - Dominator EFI Connector J2B Auxiliary Harness Holley EFI - 558-402Dominator EFI Connector J2B Auxiliary Harness;J2B Connector Four Additional Injector Driver Outputs Four Additional Coil Driver Outputs23 User Programmable OutputsDominator EFI... MSRP: $197.95 Was: Now: $184.99 Add to Cart
Holley EFI Holley EFI 558-401 - Dominator EFI Connector J2A Auxiliary Harness Holley EFI - 558-401Dominator EFI Connector J2A Auxiliary Harness;Used when adding a second wide band oxygen sensor to a Dominator EFI installation.J2A Connector#2 Wide band oxygen sensor harness... MSRP: $257.95 Was: Now: $231.99 Add to Cart
Holley EFI Holley EFI 558-319 - EFI Ford Coyote TI-VCT Main Power Wiring Harness Holley EFI - 558-319Holley EFI Main Power Harness for Coyote Ti-VCT ApplicationsHolley EFI Ford Coyote TI-VCT Main Power Wiring Harness; Plug And Play Harness; w/Aux Connector; For Use... MSRP: $92.39 Was: Now: $83.99 Add to Cart
Holley EFI Holley EFI 558-318 - Coil-Near-Plug Ignition Sub Harness Holley EFI - 558-318Coil-Near-Plug Ignition Sub Harness; Big Wire; Pre Wired w/12 ga. Power and Grounds;"Big Wire" Sub Harness- pre wired with 12ga power and grounds, for optimal performance!Pre... MSRP: $322.95 Was: Now: $286.95 Add to Cart
Holley EFI Holley EFI 558-317 - Ignition Coil Harness Holley EFI - 558-317Holley Ignition Coil Harness; For Use w/Ford Coyote Engines w/HP/Dominator;Coil Harness for 2011 to 2015 Ford Coyote (5.0L) EnginesIgnition Wiring HarnessFor Use w/Ford Coyote... MSRP: $247.95 Was: Now: $219.95 Add to Cart
