Holley EFI Holley EFI 558-444 - Digital Dash Service Harness MSRP: $69.29 Was: Now: $62.99 Add to Cart
Holley EFI Holley EFI 558-436 - Terminated Vehicle Harness For Digital Dash MSRP: $254.95 Was: Now: $229.99 Add to Cart
Holley EFI Holley EFI 558-439 - Terminator® Throttle Body Harness MSRP: $281.95 Was: Now: $249.95 Add to Cart
Holley EFI Holley EFI 558-440 - Universal MPFI Main Harness MSRP: $124.95 Was: Now: $90.99 Add to Cart
Holley EFI Holley EFI 558-433 - Digital Dash I/O Adapter w/Unterminated Vehicle Harness MSRP: $393.95 Was: Now: $349.95 Add to Cart
Holley EFI Holley EFI 558-429 - Dominator EFI GM Drive By Wire Harness MSRP: $303.95 Was: Now: $269.95 Add to Cart
Holley EFI Holley EFI 558-431 - Terminated Crank/Cam Trigger Ignition Harness MSRP: $128.69 Was: Now: $116.99 Add to Cart
Holley EFI Holley EFI 558-434 - Digital Dash I/O Adapter w/Terminated Vehicle Harness MSRP: $449.95 Was: Now: $399.95 Add to Cart
Holley EFI Holley EFI 558-428 - Fuel Injection Wire Harness MSRP: $83.59 Was: Now: $75.99 Add to Cart
Holley EFI Holley EFI 558-430 - Fuel Injection Wire Harness MSRP: $72.59 Was: Now: $65.99 Add to Cart
Holley EFI Holley EFI 558-426 - Fuel Injection Wire Harness MSRP: $108.89 Was: Now: $98.99 Add to Cart
Holley EFI Holley EFI 558-424 - Fuel Injection Wire Harness MSRP: $89.09 Was: Now: $80.99 Add to Cart
Holley EFI Holley EFI 558-425 - Fuel Injection Wire Harness MSRP: $95.69 Was: Now: $86.99 Add to Cart
Holley EFI Holley EFI 558-417 - HEMI Drive By Wire Harness MSRP: $302.95 Was: Now: $268.95 Add to Cart
Holley EFI Holley EFI 558-420 - Terminator® EFI Wiring Harness MSRP: $83.59 Was: Now: $75.99 Add to Cart
Holley EFI Holley EFI 558-455 - Transmission Control Harness MSRP: $316.95 Was: Now: $280.95 Add to Cart
Holley EFI Holley EFI 561-102 - Spark Plug Wire Set; Fits w/Shorty Headers; 45 Degree; Red; MSRP: $168.95 Was: Now: $149.95 Add to Cart
Holley EFI Holley EFI 558-459 - Terminator® Stealth Series Harness MSRP: $260.95 Was: Now: $231.95 Add to Cart
Holley EFI Holley EFI 561-100 - Spark Plug Wire Set; Fits w/Shorty Headers; 45 Degree; Black; MSRP: $178.95 Was: Now: $158.95 Add to Cart
Holley EFI Holley EFI 558-444 - Digital Dash Service Harness Holley EFI - 558-444Digital Dash Service Harness; Service Replacement Digital Dash Harness; CANBus Connector/USB Connector Wiring;Service replacement for digital dash harness.CAN Bus Connector... MSRP: $69.29 Was: Now: $62.99 Add to Cart
Holley EFI Holley EFI 558-438 - Sealed USB Data Cable Holley EFI - 558-438Sealed USB Data CableHolley EFI Sealed USB Cable 15'15' long sealed USB data cableWiring Harness For Digital DashBrand: Holley EFICategory: Vehicles, Equipment, Tools, and... MSRP: $148.95 Was: Now: $144.99 Add to Cart
Holley EFI Holley EFI 558-437 - Drive By Wire Harness Holley EFI - 558-437Hemi Drive-By-Wire Throttle Body HarnessDrive By Wire Harness; Fits 2013-Present Holley Dominator EFI Only Apps; Hemi Throttle Body Harness;The Holley Dominator ECU has built in... MSRP: $148.49 Was: Now: $134.99 Add to Cart
Holley EFI Holley EFI 558-436 - Terminated Vehicle Harness For Digital Dash Holley EFI - 558-436Terminated Vehicle Harness For Digital DashCompatible With Digital DisplayFor Use w/Holley Distributorless Ignition SystemsBrand: Holley EFICategory: Electrical, Lighting and... MSRP: $254.95 Was: Now: $229.99 Add to Cart
Holley EFI Holley EFI 558-439 - Terminator® Throttle Body Harness Holley EFI - 558-439Terminator® Throttle Body Harness; For Use w/PN[522-205];Injector upgrade harness for Terminator Throttle Body Systems. This harness is designed to be plug and play with our 205... MSRP: $281.95 Was: Now: $249.95 Add to Cart
Holley EFI Holley EFI 558-440 - Universal MPFI Main Harness Holley EFI - 558-440Universal 4 EV14 Cylinder Injector HarnessUniversal MPFI Main Harness; Fits w/4 cyl. EV14 Injector HP/Dominator EFI; 205 lb./hr.;This Universal 4 Cylinder EV14 Injector Harness is... MSRP: $124.95 Was: Now: $90.99 Add to Cart
Holley EFI Holley EFI 558-433 - Digital Dash I/O Adapter w/Unterminated Vehicle Harness Holley EFI - 558-433Digital Dash I/O Adapter w/Unterminated Vehicle Harness; Provides 10 More Inputs/Outputs To Digital Dash; Incl. USB Memory Stick/Firmware;I/O Adapter w/Unterminated Vehicle... MSRP: $393.95 Was: Now: $349.95 Add to Cart
Holley EFI Holley EFI 558-429 - Dominator EFI GM Drive By Wire Harness Holley EFI - 558-429Holley EFI GM Drive-By-Wire Harness - Early TruckDominator EFI GM Drive By Wire Harness; Early GM Truck;Terminator X Max and Dominator EFI GM DBW Harness-Early Truck. Compatible... MSRP: $303.95 Was: Now: $269.95 Add to Cart
Holley EFI Holley EFI 558-431 - Terminated Crank/Cam Trigger Ignition Harness Holley EFI - 558-431Crank/Cam Ign. Harness. Fully terminated harness.Terminated Crank/Cam Trigger Ignition Harness; Fits w/HP And Dominator ECU; Fits... MSRP: $128.69 Was: Now: $116.99 Add to Cart
Holley EFI Holley EFI 558-434 - Digital Dash I/O Adapter w/Terminated Vehicle Harness Holley EFI - 558-434Digital Dash I/O Adapter w/Terminated Vehicle Harness; Provides 10 More Inputs/Outputs To Digital Dash; Incl. USB Memory Stick/Firmware;I/O Adapter w/Terminated Vehicle... MSRP: $449.95 Was: Now: $399.95 Add to Cart
Holley EFI Holley EFI 558-428 - Fuel Injection Wire Harness Holley EFI - 558-428Fuel Injection Wire Harness; CAN Extension Harness; 9 in.;Can Extension Harness (for Racepak and other external CAN drives)Fuel Injection Wire HarnessBrand: Holley EFICategory:... MSRP: $83.59 Was: Now: $75.99 Add to Cart
Holley EFI Holley EFI 558-430 - Fuel Injection Wire Harness Holley EFI - 558-430Fuel Injection Wire Harness; CAN Adapter/Power Harness; Adapts 2 Pin Holley Main Harness CAN Connectors To New Style 4 Pin CAN Devices;The Holley EFI Can Adapter/Power Harness... MSRP: $72.59 Was: Now: $65.99 Add to Cart
Holley EFI Holley EFI 558-432 - Digital Dash I/O Adapter Holley EFI - 558-432Replacement I/O Adapter for Digital Dash.Replacement adapterInput/OutputIncluded USB driveBlack colorBrand: Holley EFICategory: Vehicles, Equipment, Tools, and SuppliesColor:... MSRP: $178.95 Was: Now: $167.99 Add to Cart
Holley EFI Holley EFI 558-426 - Fuel Injection Wire Harness Holley EFI - 558-426Fuel Injection Wire Harness; CAN Extension Harness; 12 ft.;Can Extension Harness (for Racepak and other external CAN drives)Fuel Injection Wire HarnessBrand: Holley EFICategory:... MSRP: $108.89 Was: Now: $98.99 Add to Cart
Holley EFI Holley EFI 558-424 - Fuel Injection Wire Harness Holley EFI - 558-424Fuel Injection Wire Harness; CAN Extension Harness; 4 ft.;Can Extension Harness (for Racepak and other external CAN drives)Fuel Injection Wire HarnessBrand: Holley EFICategory:... MSRP: $89.09 Was: Now: $80.99 Add to Cart
Holley EFI Holley EFI 558-425 - Fuel Injection Wire Harness Holley EFI - 558-425Fuel Injection Wire Harness; CAN Extension Harness; 8 ft.;Can Extension Harness (for Racepak and other external CAN drives)Fuel Injection Wire HarnessBrand: Holley EFICategory:... MSRP: $95.69 Was: Now: $86.99 Add to Cart
Holley EFI Holley EFI 558-417 - HEMI Drive By Wire Harness Holley EFI - 558-417Gen III HEMI Drive-By-Wire Harness - Early PedalGen III HEMI Drive-By-Wire Harness - Early Harness with the larger TYCO/AMP connector ('03-'07 cars, '03-'06 trucks) Dominator Only... MSRP: $302.95 Was: Now: $268.95 Add to Cart
Holley EFI Holley EFI 558-420 - Terminator® EFI Wiring Harness Holley EFI - 558-420Terminator EFI Input/Output KitTerminator® EFI Wiring Harness; Incl. 4 Extra Input Wires And 1 Extra Output Wire; Must Be Programmed Via Holley EFI Software;PN 558-420 contains 5... MSRP: $83.59 Was: Now: $75.99 Add to Cart
Holley EFI Holley EFI 558-455 - Transmission Control Harness Holley EFI - 558-455Holley EFI Transmission Control Harness - 2009+ GM 4L60Transmission Control Harness;Expanding on our Transmission Control options from Holley EFI. This new harness 558-455 from... MSRP: $316.95 Was: Now: $280.95 Add to Cart
Holley EFI Holley EFI 561-102 - Spark Plug Wire Set; Fits w/Shorty Headers; 45 Degree; Red; Holley EFI - 561-102Spark Plug Wire SetSpark Plug Wire set, Red with Grey 45 degree boots designed for 2010-15 Camaro SS with a 6.2L V8 and shorty headersHolley EFI LS wires are designed to work with... MSRP: $168.95 Was: Now: $149.95 Add to Cart
Holley EFI Holley EFI 558-452 - CAN Adapter Harness, 4' Holley EFI - 558-4524 in. Male to Female CAN Adapter Harness (for Racepak and other external CAN devices)Slim-Style Mounting Requires Very Little Dash Space For Install240 Degree Sweep Pointer Makes... MSRP: $83.59 Was: Now: $75.99 Add to Cart
Holley EFI Holley EFI 558-459 - Terminator® Stealth Series Harness Holley EFI - 558-459Terminator Stealth 2x4 Primary Throttle Body Sub HarnessTerminator® Stealth Series Harness; 2x4;The 2x4 main harness is functionally the same as the previous terminator stealth... MSRP: $260.95 Was: Now: $231.95 Add to Cart
Holley EFI Holley EFI 561-100 - Spark Plug Wire Set; Fits w/Shorty Headers; 45 Degree; Black; Holley EFI - 561-100Spark Plug Wire SetSpark Plug Wire set, Black with Black 45 degree boots designed for 2010-15 Camaro SS with a 6.2L V8 and shorty headersHolley EFI LS wires are designed to work... MSRP: $178.95 Was: Now: $158.95 Add to Cart
Holley EFI Holley EFI 558-453 - CAN Adapter Harness, 8' Holley EFI - 558-453CAN Adapter Harness; 8 in.; Male to Female;8' Male to Female CAN Adapter Harness (for Racepak and other external CAN devices)Slim-Style Mounting Requires Very Little Dash Space... MSRP: $93.49 Was: Now: $84.99 Add to Cart
