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558-315 | COIL HARNESS, 4V FORD MODULARclose
Coil harness for 99-04 4 Valve Ford Modular (4.6 & 5.4L) Engines. BrandHolley EFIEmission Code4Harness ApplicationFordHarness TypeIgnitionProduct TypeFord Modular Coil HarnessPart Number558-315..
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558-317 | COIL HARNESS, FORD COYOTE (2011-2015)close
Coil Harness for 2011 to 2015 Ford Coyote (5.0L) EnginesBrandHolley EFIEmission Code4Harness ApplicationFordHarness TypeIgnitionProduct TypeFord Modular Coil HarnessPart Number558-317..
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558-318 | HP SMART COIL SUB HARNESSES, BIG WIREclose
"Big Wire" Sub Harness- pre wired with 12ga power and grounds, for optimal performance! Features:“Big Wire” Sub Harness- Pre wired with 12ga Power and Grounds, for optimal performance!BrandHolley EFIEmission Code4Harness TypeIgnitionProduct TypeIgnition HarnessesPart Number558-318..
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558-322 | COIL HARNESS, FORD COYOTE (2015.5+)close
Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full potential of your high revving power plant with the Holley EFI Plug and Play Coyote Ti-VCT Control Module. BrandHolley EFIEmission Code4Harness Application..
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558-400 | J1 A/B I/O CONNECTOR HP & DOMclose
BrandHolley EFIEmission Code3Harness TypeAuxiliaryProduct TypeJ1 Auxillary Input/ Output Harness - ConnectorPart Number558-400..
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558-401 | J2A CONNECTOR & HARNESSclose
Used when adding a second wide band oxygen sensor to a Dominator EFI installation. Features:J2A Connector#2 Wide band oxygen sensor harness (Fully Terminated)23 user programmable input wires with pre-crimped ECU pinsBrandHolley EFIEmission Code3Harness TypeAuxiliaryProduct TypeJ2 Auxiliary Input/ Output Harness - ConnectorPart Number558-401..
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558-402 | J2B CONNECTOR & HARNESSclose
BrandHolley EFIEmission Code3Harness TypeAuxiliaryProduct TypeJ2 Auxiliary Input/ Output Harness - ConnectorPart Number558-402..
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558-403 | J3 CONNECTOR & HARNESSclose
BrandHolley EFIEmission Code3Harness TypeAuxiliaryProduct TypeJ3 Auxiliary Input/ Output Harness - ConnectorPart Number558-403..
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558-404 | J4 CONNECTOR & HARNESSclose
BrandHolley EFIEmission Code3Harness TypeAuxiliaryProduct TypeJ4 Auxiliary Input/ Output Harness - ConnectorPart Number558-4043This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:1965 and older U.S. manufactured California Certified vehicles1967 an..
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558-409 | SEALED USB CABLEclose
7' long sealed USB data cable. This cable is included with the purchase of an HP or Dominator ECU.BrandHolley EFIEmission Code5Harness TypeAuxiliaryLength7'Product TypeUSB Data - Communication CablePart Number558-409..
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558-420 | TERMINATOR EFI I/O KITclose
PN 558-420 contains 5 extra input/output wires that the base Terminator EFI harness does not contain. It contains Input wires for Inputs 1-4. It contains one wire for Output 2. These inputs and outputs can perform features and functions that must be programmed via Holley EFI laptop software. The software also contains instructions on how to program these.BrandHolley EFIEmission Code5Harness TypeAu..
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558-432 | I/O ADAPTER, DIGITAL DASHclose
Replacement I/O Adapter for Digital Dash BrandHolley EFIEmission Code5Product TypeDigital Dash Harness / Adapter / ModulePart Number558-432..
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558-433 | KIT, I/O ADAPTER WITH UNTERMINATED VEHICclose
I/O Adapter w/Unterminated Vehicle HarnessFeatures:Provides ten addiitonal inputs/outputs to the 7" digital dashBrings out connections to a waterproof 26 pin connector similiar to ones used on EFI unitsItem includes USB memory stick to update digital dash firmware that supports adapterBrandHolley EFIEmission Code5Product TypeDigital Dash Harness / Adapter / ModulePart Number558-433..
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558-434 | KIT, I/O ADAPTER WITH TERMINATED VEHICLEclose
I/O Adapter w/Terminated Vehicle HarnessFeatures:Provides ten addiitonal inputs/outputs to the 7" digital dashBrings out connections to a waterproof 26 pin connector similiar to ones used on EFI unitsHarness includes USB memory stick to update digital dash firmware that supports adapterBrandHolley EFIEmission Code5Product TypeDigital Dash Harness / Adapter / ModulePart Number558-434..
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558-435 | UNTERMINATED VEHICLE HARNESS, DIGITAL DAclose
Unterminated Vehicle Harness For Digital DashBrandHolley EFIEmission Code5Product TypeDigital Dash Harness / Adapter / ModulePart Number558-435..
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558-436 | TERMINATED VEHICLE HARNESS, DIGITAL DASHclose
Terminated Vehicle Harness For Digital DashBrandHolley EFIEmission Code5Product TypeDigital Dash Harness / Adapter / ModulePart Number558-436..
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558-438 | SEALED USB CABLE, 15 FTclose
15' long sealed USB data cable BrandHolley EFIEmission Code5Harness TypeAuxiliaryLength15ftProduct TypeUSB Data - Communication CablePart Number558-438..
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558-439 | TERMINATOR 205 LB/HR INJECTOR HARNESSclose
Injector upgrade harness for Terminator Throttle Body Systems. This harness is designed to be plug and play with our 205 lb/hr injector upgrade kit, Part Number 522-205. BrandHolley EFIEmission Code4Product TypeTerminator Throttle Body HarnessPart Number558-439..
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558-470 | 4R70W/4R75W 98+ TRANS HARNESSclose
Ford 4R70W/4R75W Transmission Harness - Complete terminated harness with j4 connector to operate 1998+ Ford electronic transmissions, for Dominator EFI ONLY!Features:Plug and play fully terminated harnessExtra pressure transducer connector for optional Line pressure sensor (554-136)BrandHolley EFIEmission Code5Harness ApplicationFordHarness TypeTransmissionProduct TypeHarness KitPart Number558-470..
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558-471 | TRANS HARNESS, AODE/4R70W (92-97)close
Ford AODE/4R70W Transmission HarnessFeatures:Plug and play fully terminated harnessBrandHolley EFIEmission Code3Harness ApplicationFordHarness TypeTransmissionProduct TypeHarness KitPart Number558-471..
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