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HOLLEY

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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 558-127 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
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
-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 558-200 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
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 558-204 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 558-210 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 558-212 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 558-213 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 558-219 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
-70%
New
Sold out
HOLLEY 558-303 Ignition Harness w/Magnetic Pickup Quick View
HOLLEY

HOLLEY 558-303 Ignition Harness w/Magnetic Pickup

$114.79 $33.66
HLY558-303
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Magnetic Pickup - Holley Dominator EFI - GM LS-Series - 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 558-305 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 558-307 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
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 558-311 Hemi Coil Harness Late TYCO Quick View
HOLLEY

HOLLEY 558-311 Hemi Coil Harness Late TYCO

$258.62
HLY558-311
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Ignition Coil Wiring - Holley HP / Dominator EFI - Mopar Gen III Hemi - 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 558-321 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 558-323 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
-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 558-326 LS Coil Ext. Harness 36in 2pk Quick View
HOLLEY

HOLLEY 558-326 LS Coil Ext. Harness 36in 2pk

$170.63
HLY558-326
All Products HOLLEY Ignition Wiring Harnesses Ignitions and Electrical Wiring Harnesses
Ignition Wiring Harness - Coil Extension Harness - GM LS-Series - Pair
New
HOLLEY 558-329 CD Box to Sniper 2 Quick View
HOLLEY

HOLLEY 558-329 CD Box to Sniper 2

$38.82
HLY558-329
All Products HOLLEY Ignitions and Electrical Wiring Components Wiring Pigtails
Wiring Terminal - Sniper 2 EFI - Tach Input Ignition Adapter - Pigtail Included - CD Box to Sniper 2 EFI - Each
New
Quick View
HOLLEY

HOLLEY 558-330 Pro Billet/Crank Trigger to Sniper 2

$50.36
HLY558-330
All Products HOLLEY Ignitions and Electrical Wiring Components Wiring Pigtails
Wiring Terminal - Sniper 2 EFI - Tach Input Ignition Adapter - Crank Trigger Magnetic Input to Sniper 2 EFI - Each
New
HOLLEY 558-400 J1A/B Input/Output Connector Quick View
HOLLEY

HOLLEY 558-400 J1A/B Input/Output Connector

$180.55
HLY558-400
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - J1A/B - Holley Dominator EFI - Each
New
HOLLEY 558-401 Auxiliary Harness J2A Connector Quick View
HOLLEY

HOLLEY 558-401 Auxiliary Harness J2A Connector

$304.37
HLY558-401
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - J2A Auxiliary Connector Harness - Holley Dominator EFI - Universal - Kit
New
HOLLEY 558-402 J2B Auxiliary Harness Kit Quick View
HOLLEY

HOLLEY 558-402 J2B Auxiliary Harness Kit

$240.84
HLY558-402
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - J2B Auxiliary Connector Harness - Holley Dominator EFI - Universal - Kit
New
HOLLEY 558-403 J3 Connector & Harness Quick View
HOLLEY

HOLLEY 558-403 J3 Connector & Harness

$240.84
HLY558-403
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
Wiring Harness - J3 Auxiliary Input / Output Connector - Dominator EFI - Each
-19%
New
HOLLEY 558-404 J4 Connector & Harness Quick View
HOLLEY

HOLLEY 558-404 J4 Connector & Harness

$393.66 $314.93
HLY558-404
All Products Fuel Injector Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - J4 Auxiliary Harness - Holley Dominator EFI - Each
New
HOLLEY 558-405 Trans Wire Harness GM 4L60 Pre 2009 - 4L80 Quick View
HOLLEY

HOLLEY 558-405 Trans Wire Harness GM 4L60 Pre 2009 - 4L80

$421.52
HLY558-405
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Transmission - Holley Dominator EFI - GM 4L60E / 4L80E - Each
New
HOLLEY 558-406 Drive By Wire Harness GM Quick View
HOLLEY

HOLLEY 558-406 Drive By Wire Harness GM

$326.76
HLY558-406
All Products Engine Wiring Harnesses HOLLEY Ignitions and Electrical Wiring Harnesses
EFI Wiring Harness - Drive by Wire - Holley Dominator EFI - GM - Each
New
HOLLEY 558-407 Multi Map Selector Quick View
HOLLEY

HOLLEY 558-407 Multi Map Selector

$233.48
HLY558-407
All Products Electrical Switches and Components HOLLEY Ignitions and Electrical Wiring Components
ECM Calibration Select Switch - Key Selector - 4 Separate Maps - Holley Dominator EFI - Kit
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