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558-408 | LOOSE J2-J4 CONNECTOR PIN

add_shopping_cart$195.00$174.95

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558-408 | LOOSE J2-J4 CONNECTOR PINclose

j2A, j2B, j3, j4 Connector & Pin Kit - Contains connectors & pins, but no wiring. for Dominator EFIBrandHolley EFIEmission Code5Harness TypeAuxiliaryProduct TypeEFI Connector KitPart Number558-408..

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558-409 | SEALED USB CABLE

add_shopping_cart$77.72$69.95

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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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558-410 | CRANK/CAM HARNESS

add_shopping_cart$95.50$85.95

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558-410 | CRANK/CAM HARNESSclose

Crank/Cam Ign. Harness. Fully terminated harness. Connects to Holley 60-2 crank sensor and GM Cam-Sync Distributor AC Delco PN213-350 or eficonnection.com sync pulse distributorBrandHolley EFIEmission Code3Harness ApplicationUniversalHarness TypeIgnitionProduct TypeCrank - Cam HarnessPart Number558-410..

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558-414 | HARNESS, TERMINATOR MAIN

add_shopping_cart$423.00$379.95

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558-414 | HARNESS, TERMINATOR MAINclose

Replacement main wiring harness for Terminator EFI kits 550-405 and 550-406.BrandHolley EFIEmission Code3Product TypeTerminator TBI Main Engine HarnessPart Number558-414..

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558-415 | SUB-HARNESS, TERMINATOR

add_shopping_cart$223.00$199.95

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558-415 | SUB-HARNESS, TERMINATORclose

Replacement throttle body wiring harness for Terminator EFI kits 550-405 and 550-406.BrandHolley EFIEmission Code3Product TypeTerminator Throttle Body HarnessPart Number558-415..

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558-420 | TERMINATOR EFI I/O KIT

add_shopping_cart$44.39$39.95

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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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558-422 | DBW HARNESS, FORD COYOTE

add_shopping_cart$245.00$219.95

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558-422 | DBW HARNESS, FORD COYOTEclose

Drive-By-Wire harness for 2011-2017 Ford Coyote (5.0L) enginesFeatures:Designed to be used with Ford Throttle Body P/N's - BR3Z-9E926-C, BR3E-9F991-AB, and FR3E-9F991-AADesigned to be used with Ford Throttle Pedal P/N - BR3Z-9F836-D and BR3Z-9F836-C BrandHolley EFIEmission Code4Harness ApplicationFordHarness TypeDrive-By-WireProduct TypeDrive By Wire HarnessPart Number558-422..

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558-424 | CAN EXTENSION HARNESS, 4FT

add_shopping_cart$49.94$44.95

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558-424 | CAN EXTENSION HARNESS, 4FTclose

Can Extension Harness (for Racepak and other external CAN drives)BrandHolley EFIEmission Code5Product TypeCAN Extension HarnessPart Number558-424..

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558-425 | CAN EXTENSION HARNESS, 8FT

add_shopping_cart$55.50$49.95

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558-425 | CAN EXTENSION HARNESS, 8FTclose

Can Extension Harness (for Racepak and other external CAN drives)BrandHolley EFIEmission Code5Product TypeCAN Extension HarnessPart Number558-425..

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558-426 | CAN EXTENSION HARNESS, 12FT

add_shopping_cart$66.61$59.95

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558-426 | CAN EXTENSION HARNESS, 12FTclose

CAN Extension Harness (for Racepak and other external CAN drives)BrandHolley EFIEmission Code5Product TypeCAN Extension HarnessPart Number558-426..

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558-428 | CAN EXTENSION HARNESS, 9IN

add_shopping_cart$44.39$39.95

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558-428 | CAN EXTENSION HARNESS, 9INclose

Can Extension Harness (for Racepak and other external CAN drives)BrandHolley EFIEmission Code5Product TypeCAN Extension HarnessPart Number558-428..

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558-430 | CAN ADAPTER - NEW DEVICE TO TWO PIN MALE

add_shopping_cart$35.37$31.83

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558-430 | CAN ADAPTER - NEW DEVICE TO TWO PIN MALEclose

The Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.BrandHolley EFIEmission Code5Product TypeCAN Extension HarnessPart Number558-430..

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558-432 | I/O ADAPTER, DIGITAL DASH

add_shopping_cart$134.00$119.95

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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 VEHIC

add_shopping_cart$289.00$259.95

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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 VEHICLE

add_shopping_cart$334.00$299.95

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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 DA

add_shopping_cart$167.00$149.95

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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 DASH

add_shopping_cart$206.00$184.95

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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 FT

add_shopping_cart$112.00$99.95

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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 HARNESS

add_shopping_cart$223.00$199.95

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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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558-440 | UNIVERSAL 4CYL MPFI W/205LB CONNECTORS

add_shopping_cart$107.00$95.95

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558-440 | UNIVERSAL 4CYL MPFI W/205LB CONNECTORSclose

This Universal 4 Cylinder EV14 Injector Harness is designed to be plug and play with HP EFI & Dominator EFI Systems, utilizing our 205 LB/HR Injector Set - Part Number 522-205.BrandHolley EFIEmission Code4Harness ApplicationUniversalHarness TypeInjectorInjector ConnectorBosch/EV14Product TypeInjector Harness - ConnectorPart Number558-440..