Holley EFI Holley EFI 558-448 - J1A / J1B ECU Connector Kit MSRP: $116.00 Was: Now: $103.95 Add to Cart
Holley EFI Holley EFI 558-443 - Sniper EFI CAN To USB Communication Cable MSRP: $82.06 Was: Now: $80.99 Add to Cart
Holley EFI Holley EFI 558-436 - Terminated Vehicle Harness For Digital Dash MSRP: $232.00 Was: Now: $207.95 Add to Cart
Holley EFI Holley EFI 558-439 - Terminator® Throttle Body Harness MSRP: $256.00 Was: Now: $229.95 Add to Cart
Holley EFI Holley EFI 558-440 - Universal MPFI Main Harness MSRP: $124.00 Was: Now: $115.99 Add to Cart
Holley EFI Holley EFI 558-433 - Digital Dash I/O Adapter w/Unterminated Vehicle Harness MSRP: $350.00 Was: Now: $314.95 Add to Cart
Holley EFI Holley EFI 558-429 - Dominator EFI GM Drive By Wire Harness MSRP: $276.00 Was: Now: $247.95 Add to Cart
Holley EFI Holley EFI 558-431 - Terminated Crank/Cam Trigger Ignition Harness MSRP: $102.00 Was: Now: $96.99 Add to Cart
Holley EFI Holley EFI 558-434 - Digital Dash I/O Adapter w/Terminated Vehicle Harness MSRP: $405.00 Was: Now: $363.95 Add to Cart
Holley EFI Holley EFI 558-428 - Fuel Injection Wire Harness MSRP: $64.89 Was: Now: $58.99 Add to Cart
Holley EFI Holley EFI 558-430 - Fuel Injection Wire Harness MSRP: $54.99 Was: Now: $49.99 Add to Cart
Holley EFI Holley EFI 558-426 - Fuel Injection Wire Harness MSRP: $80.57 Was: Now: $79.99 Add to Cart
Holley EFI Holley EFI 558-425 - Fuel Injection Wire Harness MSRP: $76.99 Was: Now: $69.99 Add to Cart
Holley EFI Holley EFI 558-417 - HEMI Drive By Wire Harness MSRP: $275.00 Was: Now: $246.95 Add to Cart
Holley EFI Holley EFI 558-451 - CAN Adapter Harness, 12" Holley EFI - 558-45112 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: $54.99 Was: Now: $49.99 Add to Cart
Holley EFI Holley EFI 558-448 - J1A / J1B ECU Connector Kit Holley EFI - 558-448J1A / J1B ECU Connector Kit; J1A/J1B ECU Connector Kit w/Pins and Seals;If you already have your own wire and simply need the connectors and pins, we have you covered with our new... MSRP: $116.00 Was: Now: $103.95 Add to Cart
Holley EFI Holley EFI 558-443 - Sniper EFI CAN To USB Communication Cable Holley EFI - 558-443Holley EFI CAN to USB Dongle Communication CableSniper EFI CAN To USB Communication Cable; 8 ft. Communication Cable;The CAN to USB communication cable provides the user with real... MSRP: $82.06 Was: Now: $80.99 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 EFIEmission Code: 5Harness Type: AuxiliaryLength:... MSRP: $136.00 Was: Now: $122.99 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 EFIClearance Category: InteriorDiscount... MSRP: $232.00 Was: Now: $207.95 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: $256.00 Was: Now: $229.95 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: $124.00 Was: Now: $115.99 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: $350.00 Was: Now: $314.95 Add to Cart
Holley EFI Holley EFI 558-429 - Dominator EFI GM Drive By Wire Harness Holley EFI - 558-429Dominator EFI GM Drive-By-Wire Harness - Early TruckDominator EFI GM Drive By Wire Harness; Early GM Truck;Dominator EFI GM DBW Harness-Early Truck. Compatible with GM part number... MSRP: $276.00 Was: Now: $247.95 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: $102.00 Was: Now: $96.99 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: $405.00 Was: Now: $363.95 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 EFIEmission... MSRP: $64.89 Was: Now: $58.99 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: $54.99 Was: Now: $49.99 Add to Cart
Holley EFI Holley EFI 558-432 - Digital Dash I/O Adapter Holley EFI - 558-432Replacement I/O Adapter for Digital DashProvides 10 Additional Inputs And OutputsBrings Connections To 26 Pin ConnectorBrand: Holley EFIEmission Code: 5Product Type: Digital Dash... MSRP: $163.00 Was: Now: $145.95 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 EFIEmission... MSRP: $80.57 Was: Now: $79.99 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 EFIEmission... MSRP: $76.99 Was: Now: $69.99 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 PedalHEMI Drive By Wire Harness; Fits w/Gen III Hemi Early Pedal;Similar to the changes with the cam and crank sensors, the... MSRP: $275.00 Was: Now: $246.95 Add to Cart