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Wiring Harnesses

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-19%
New
HOLLEY 558-325 EFI Pro-Billet Ignition Adapter Quick View
HOLLEY

HOLLEY 558-325 EFI Pro-Billet Ignition Adapter

$69.11 $55.29
HLY558-325
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Ignition Adapter Harness - MSD Distributors to Holley EFI - Each
New
HOLLEY 558-321 GM LS Coil Sub Harnesses Quick View
HOLLEY

HOLLEY 558-321 GM LS Coil Sub Harnesses

$255.83
HLY558-321
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - Factory Replacement - Injector Sub Harness - GM LS-Series - Pair
New
HOLLEY 558-305 Ford TFI Ignition Harness Quick View
HOLLEY

HOLLEY 558-305 Ford TFI Ignition Harness

$177.73
HLY558-305
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Ignition Adapter Harness - Ford TFI Distributor to Holley Avenger / HP / Dominator EFI - Each
New
HOLLEY 558-308 EFI Main Power Harness Quick View
HOLLEY

HOLLEY 558-308 EFI Main Power Harness

$148.10
HLY558-308
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Main Power - Holley Dominator EFI - Each
New
HOLLEY 558-219 Harness Injector Driver Module Quick View
HOLLEY

HOLLEY 558-219 Harness Injector Driver Module

$431.93
HLY558-219
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - J2B Plug to Dominator ECU Module - Universal - Each
New
HOLLEY 558-201 Injector Wiring Harness V8 EV6 Style Injectors Quick View
HOLLEY

HOLLEY 558-201 Injector Wiring Harness V8 EV6 Style Injectors

$252.53
HLY558-201
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - EV6 Style Injectors - Holley Dominator EFI - Each
New
HOLLEY 558-304 HEI Ignition Harness Quick View
HOLLEY

HOLLEY 558-304 HEI Ignition Harness

$83.60
HLY558-304
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Ignition Adapter Harness - GM Small Cap HEI Distributor to Holley Avenger / HP / Dominator EFI - Each
New
HOLLEY 558-323 Wiring Harness Adapter Hyperspark Ignition Quick View
HOLLEY

HOLLEY 558-323 Wiring Harness Adapter Hyperspark Ignition

$58.60
HLY558-323
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Ignition Adapter Harness - HyperSpark Distributors to Holley EFI - Each
New
HOLLEY 558-307 LS Coil On Plug Harness Universal Quick View
HOLLEY

HOLLEY 558-307 LS Coil On Plug Harness Universal

$265.24
HLY558-307
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - Coil-On-Plug to Sub Harness - Holley HP / Dominator EFI - Each
-19%
New
HOLLEY 558-312 HP EFI Sub-Harnesses - Smart Coil Quick View
HOLLEY

HOLLEY 558-312 HP EFI Sub-Harnesses - Smart Coil

$489.91 $391.93
HLY558-312
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Smart Coil - Ignition Coil Wiring - Holley HP / Dominator EFI - Universal - Each
New
HOLLEY 558-318 Coil-Near-Plug Sub Harness - Big Wire Quick View
HOLLEY

HOLLEY 558-318 Coil-Near-Plug Sub Harness - Big Wire

$366.69
HLY558-318
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - Big Wire C-N-P Sub Harness - V8 - Each
New
HOLLEY 558-213 Injector Harness Ford w/ Jetronic Injectors Quick View
HOLLEY

HOLLEY 558-213 Injector Harness Ford w/ Jetronic Injectors

$277.13
HLY558-213
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - EV1 Style Injectors - Ford V8 - Each
New
HOLLEY 558-210 Injector Harness V8 Evenly Spaced USCAR Quick View
HOLLEY

HOLLEY 558-210 Injector Harness V8 Evenly Spaced USCAR

$271.22
HLY558-210
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Fuel Injector Harness - Adapter - USCAR EV6 / Stock to Bosch Jetronic / Minitimer - Each
New
HOLLEY 558-200 Injector Wiring Harness V8 Bosch Style Injectors Quick View
HOLLEY

HOLLEY 558-200 Injector Wiring Harness V8 Bosch Style Injectors

$259.10
HLY558-200
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Bosch Style Injectors - Holley Dominator EFI - Each
-20%
New
HOLLEY 558-191 Sniper 2 Main Harness w/Fuel Pump Relay Quick View
HOLLEY

HOLLEY 558-191 Sniper 2 Main Harness w/Fuel Pump Relay

$335.39 $268.31
HLY558-191
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Main Battery Harness - Fuel Pump Relay - Sniper 2 EFI - Power Distribution Module - Each
New
HOLLEY 558-212 Injector Harness - Ford USCAR/EV6 Style Injector Quick View
HOLLEY

HOLLEY 558-212 Injector Harness - Ford USCAR/EV6 Style Injector

$270.19
HLY558-212
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - EV6 / USCAR Style Injectors - Holley EFI - Small Block Ford - Each
New
HOLLEY 558-204 EFI Injector Harness - Universal Unterminated Quick View
HOLLEY

HOLLEY 558-204 EFI Injector Harness - Universal Unterminated

$336.74
HLY558-204
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Fuel Injector Harness - Unterminated - Bosch Terminal Ends Included - Holley HP / Dominator EFI - Kit
New
HOLLEY 558-207 Injector Harness - 16 Injectors - Unterminated Quick View
HOLLEY

HOLLEY 558-207 Injector Harness - 16 Injectors - Unterminated

$244.92
HLY558-207
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Bosch EV1 Style Injectors - Holley HP / Dominator EFI - Kit
New
HOLLEY 558-132 Sub-Harness Mopar Gen-3 Hemi VVT & SRV Quick View
HOLLEY

HOLLEY 558-132 Sub-Harness Mopar Gen-3 Hemi VVT & SRV

$234.11
HLY558-132
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Terminator X - Variable Valve Timing - Mopar Gen III Hemi - Each
New
HOLLEY 558-190 Sniper 2 Main Harness For PDM Quick View
HOLLEY

HOLLEY 558-190 Sniper 2 Main Harness For PDM

$202.28
HLY558-190
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Main Battery Harness - Sniper 2 EFI - Power Distribution Module - Each
New
HOLLEY 558-127 Bench-Top EFI Test Harness Quick View
HOLLEY

HOLLEY 558-127 Bench-Top EFI Test Harness

$349.24
HLY558-127
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Wiring Harness - Bench Top Test - Holley EFI - Each
New
HOLLEY 558-128 Engine Main Harness Ford 5.0L/5.8L Quick View
HOLLEY

HOLLEY 558-128 Engine Main Harness Ford 5.0L/5.8L

$743.62
HLY558-128
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Engine Wiring Harness - Plug-and-Play - Small Block Ford - Each
-19%
New
HOLLEY 558-118 Ford MPFI Coil On Plug Main Harness Quick View
HOLLEY

HOLLEY 558-118 Ford MPFI Coil On Plug Main Harness

$1,137.41 $909.93
HLY558-118
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - Coil-On-Plug Main Harness - Ford MPFI - Each
New
HOLLEY 558-116 Main Wire Harness Hemi Late W/ TPS & IAC Quick View
HOLLEY

HOLLEY 558-116 Main Wire Harness Hemi Late W/ TPS & IAC

$1,035.19
HLY558-116
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Engine Wiring Harness - Drive By Cable - Terminated - Mopar Gen III Hemi - Kit
New
HOLLEY 558-126 Flying Lead Main Harness Quick View
HOLLEY

HOLLEY 558-126 Flying Lead Main Harness

$549.45
HLY558-126
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Engine Wiring Harness - Flying Lead - 15 ft Long - Crimped - Universal - Kit
New
HOLLEY 558-117 Universal MPFI Coil On Plug Main Harness Quick View
HOLLEY

HOLLEY 558-117 Universal MPFI Coil On Plug Main Harness

$837.99
HLY558-117
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - Coil-On-Plug Main Harness - Universal - Each
New
HOLLEY 558-108 Main Harness 99-04 Ford Modular Engine Quick View
HOLLEY

HOLLEY 558-108 Main Harness 99-04 Ford Modular Engine

$1,113.95
HLY558-108
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Terminated Main Harness - Ford Modular 1999-2004 - Kit
New
HOLLEY 558-103 Main Wiring Harness LS2 & LS3 Quick View
HOLLEY

HOLLEY 558-103 Main Wiring Harness LS2 & LS3

$829.24
HLY558-103
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 58x Reluctor Wheel - LS2 / LS3 / LS7 - GM...
New
HOLLEY 558-101 TPI Stealth Ram Main Harness Quick View
HOLLEY

HOLLEY 558-101 TPI Stealth Ram Main Harness

$885.18
HLY558-101
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - TPI Stealth Ram - Main Harness - Avenger EFI / HP EFI / Dominator EFI - Various GM Applications -...
New
HOLLEY 558-105 Main Harness - Univesal Un-Terminated Quick View
HOLLEY

HOLLEY 558-105 Main Harness - Univesal Un-Terminated

$699.71
HLY558-105
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Unterminated Main Harness - Holley HP / Dominator EFI - Kit
New
HOLLEY 558-102 Main Wiring Harness LS1 & LS6 Quick View
HOLLEY

HOLLEY 558-102 Main Wiring Harness LS1 & LS6

$829.24
HLY558-102
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series -...
New
HOLLEY 558-104 Main Harness - Universal MPFI Quick View
HOLLEY

HOLLEY 558-104 Main Harness - Universal MPFI

$699.10
HLY558-104
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - MPFI Main Harness - Holley HP / Dominator EFI - Universal - Each
New
HOLLEY 554-130 EFI Gauge Module Anolog Style Can Gauges Quick View
HOLLEY

HOLLEY 554-130 EFI Gauge Module Anolog Style Can Gauges

$206.54
HLY554-130
All Products Gauge Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Gauge Wiring Harness - Analog Gauges - Holley EFI CAN Gauges - Universal - Each
New
CHEVROLET PERFORMANCE 12627501 Wire Harness for Cam Position Sensor Quick View
CHEVROLET PERFORMANCE

CHEVROLET PERFORMANCE 12627501 Wire Harness for Cam Position Sensor

$64.09
GMP12627501
All Products CHEVROLET PERFORMANCE Engine Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Cam Sensor Harness - LS2 - GM LS-Series - Each
-11%
New
CHEVROLET PERFORMANCE 12579355 LS Ignition Coil Harness Quick View
CHEVROLET PERFORMANCE

CHEVROLET PERFORMANCE 12579355 LS Ignition Coil Harness

$247.79 $218.39
GMP12579355
All Products CHEVROLET PERFORMANCE Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - Ignition to Coil Pack - GM LS-Series - Each
New
FUELTECH USA 5015006522 FTSPARK-8 Blank Harness Quick View
FUELTECH USA

FUELTECH USA 5015006522 FTSPARK-8 Blank Harness

$280.64
FTH5015006522
All Products FUELTECH USA Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - 10 ft Long - FTSpark-8 Ignition Module - Unterminated - Each
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