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MSDMSD Street Fire 5577 Spark Plug Wire Set Compatible with 1994-1996 GM Vortec V6 4.3L engine. Stock replacement style wires.Part# 5577Free ShippingIn Stock
$81.95
Holley EFIHolley EFI 558-101 TPI/Stealth Ram Main Harness TPI/Stealth Ram&trade: Main Harness for Avenger EFI, HP EFI & Dominator EFIPart# 558-101Free ShippingIn Stock
$607.95
Holley EFIHolley EFI 558-102 LS1/6 (24x/1x) Engine Main Harness LS1/6 Main Harness for HP EFI & Dominator EFIPart# 558-102Free ShippingIn Stock
$607.95
Holley EFIHolley EFI 558-103 LS2/3/7+ (58x/4x) Engine Main Harness LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFIPart# 558-103Free ShippingIn Stock
$607.95
Holley EFIHolley EFI 558-104 Universal MPFI Main Harness Universal MPFI Main Harness for HP EFI & Dominator EFIPart# 558-104Free ShippingIn Stock
$513.95
Holley EFIHolley EFI 558-105 Unterminated Universal Main Harness Unterminated Universal Main Harness for HP EFI & Dominator EFIPart# 558-105Free ShippingIn Stock
$513.95
Holley EFIHolley EFI 558-108 Ford 2V & 4V Modular Main Harness Ford 2V & 4V Modular Main Harness, For HP EFI & Dominator EFIPart# 558-108Free ShippingIn Stock
$763.95
Holley EFIHolley EFI 558-110 Ford Coyote Engine Main Harness w/ Ti-VCT and stock coils (2011-2017) Coyote Engine Main Harness Compatible with 2011-2017 Ti-VCT Coyote EnginesPart# 558-110Free ShippingIn Stock
$808.95
Holley EFIHolley EFI 558-111 TERMINATOR EFI MAIN WIRING HARNESS-TBI,LSX 24X MAIN HARNESS, TERMINATOR TBI, LSX, 24XPart# 558-111Free ShippingIn Stock
$673.95
Holley EFIHolley EFI 558-112 TERMINATOR EFI MAIN WIRING HARNESS-TBI,LSX, 58x MAIN HARNESS, TERMINATOR TBI, LSX, 58xPart# 558-112Free ShippingIn Stock
$654.95
Holley EFIHolley EFI 558-113 Ford Modular 2V & 4V Main Harness for use with Holley Smart Coils Main Harness for 1999-2004 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart CoilsPart# 558-113Free ShippingIn Stock
$853.95
Holley EFIHolley EFI 558-115 Gen III Hemi Main Harness, Early, w/ TPS and Idle Air Control Connections Gen III HEMI Main Harness w Throttle Position Sensor & Idle Air Control, For use with Cable Throttle Body.Part# 558-115Free ShippingIn Stock
$808.95
Holley EFIHolley EFI 558-116 Gen III HEMI Main Harness , Late, w/TPS and Idle Air Control Connections Gen III HEMI Main Harness w/Throttle Position Sensor & Idle Air Control, For Late Crank & Cam Sensors, for HP EFI & Dominator EFI, For use with Cable Throttle Body.Part# 558-116Free ShippingIn Stock
$763.95
Holley EFIHolley EFI 558-117 Universal MPFI Coil on Plug Main Harness UNIVERSAL MPFI W/ COP MAIN HARNESSPart# 558-117Free ShippingIn Stock
$560.95
Holley EFIHolley EFI 558-118 Ford MPFI Coil On Plug Main Harness Ford MPFI Coil On Plug Main HarnessPart# 558-118Free ShippingIn Stock
$607.95
Part# 558-121Free ShippingIn Stock
$477.95
Holley EFIHolley EFI 558-122 Ford Coyote Ti-VCT Main Harness for HP smart coils (2011-2017) Compatible with 2011-2017 Ford Coyote Engines using Holley EFI HP smart coilsPart# 558-122Free ShippingIn Stock
$898.95
Holley EFIHolley EFI 558-125 Ford Coyote Ti-VCT Sub Harness (2013-2017) Compatible with 2013-2017 Ford Coyote Engines with Stock CamshaftsPart# 558-125Free ShippingIn Stock
$382.95
Holley EFIHolley EFI 558-126 Unterminated 15' Flying Lead Main Harness Pre-Terminated J1A / J1B 15' Flying Lead Main HarnessPart# 558-126Free ShippingIn Stock
$403.95
Holley EFIHolley EFI 558-127 Benchtop Testing Harness Benchtop Test Harness for Firmware Updating, Dash Configuration, and ECU TestingPart# 558-127Free ShippingIn Stock
$223.95
Holley EFIHolley EFI 558-128 Engine Main Harness Compatible with 1986-2000 Ford® Fuel Injected 5.0L/5.8L Small Block Engines. This product is not created or sold by Ford®.Part# 558-128Free ShippingIn Stock
$525.95
Holley EFIHolley EFI 558-129 Engine Main Harness - Gen V LT Engine Compatible with GM® Gen V LT Engines using Terminator X and Terminator X Max. This product is not created or sold by GM®.Part# 558-129Free ShippingIn Stock
$549.95
Holley EFIHolley EFI 558-130 Engine Main Harness - LT4 Engine Compatible with GM® Gen V LT4 Engines using Terminator X ECU's Only with V3 build 100 or later. This product is not created or sold by GM®.Part# 558-130Free ShippingIn Stock
$549.95
Holley EFIHolley EFI 558-131 Gen III Hemi VVT HARNESS ONLY For use with Holley Terminator X and Terminator X MaxIn Stock
$120.55
Holley EFIHolley EFI 558-132 Gen III Hemi VVT & SRV HARNESS For use with Holley Terminator X and Terminator X MaxPart# 558-132Free ShippingIn Stock
$156.55
Holley EFIHolley EFI 558-200 V8 over Manifold, Bosch Style Injector Harness V8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI, Dominator EFI and Terminator X. GM / Chrysler Cylinder OrientationPart# 558-200Free ShippingIn Stock
$190.95
Holley EFIHolley EFI 558-201 LSx Injector Harness - For EV6 Style Injectors LSx Injector Harness for HP EFI, Dominator EFI and Terminator X.Part# 558-201Free ShippingIn Stock
$170.95
Holley EFIHolley EFI 558-203 Universal 6 Cylinder Injector Harness Universal 6 Cylinder Injector Harness for HP EFI & Dominator EFIPart# 558-203Free ShippingIn Stock
$202.95
Holley EFIHolley EFI 558-204 Universal Unterminated Injector Harness Universal Unterminated Injector Harness for HP EFI & Dominator EFI(Bosch EV1 style).Part# 558-204Free ShippingIn Stock
$214.95
Holley EFIHolley EFI 558-207 Unterminated 16 injectors MPFI harness Unterminated 16 injectors MPFI harness Terminated at injector connectors (Bosch EV1 style).Part# 558-207Free ShippingIn Stock
$207.95
Holley EFIHolley EFI 558-209 Ford V8 Injector Harness Ford V8 Injector Harness for HP EFI & Dominator EFIPart# 558-209Free ShippingBackordered
Est. Ship Date: Coming Soon
$238.95
Holley EFIHolley EFI 558-210 Gen III HEMI V8 Injector Harness Stock/USCAR style injectors Gen III HEMI Injector Harness with Stock/USCAR style Injectors for HP EFI & Dominator EFIPart# 558-210Free ShippingIn Stock
$186.95
Holley EFIHolley EFI 558-211 Gen III HEMI V8 Injector Harness - Bosch/Jetronic and Holley injectors used for upgrades and racing Gen III HEMI Injector Harness with Bosch/Jetronic and Holley injectors used for upgrades and racing for HP EFI & Dominator EFIPart# 558-211Free ShippingIn Stock
$179.95
Holley EFIHolley EFI 558-212 Ford V8 Injector Harness Evenly spaced Ford V8 Injector Harness for USCAR / EV6 style InjectorsPart# 558-212Free ShippingIn Stock
$186.95
Holley EFIHolley EFI 558-213 Ford V8 Injector Harness Evenly spaced Ford V8 Injector Harness for Jetronic Bosch EV1 style InjectorsPart# 558-213Free ShippingIn Stock
$190.95
Holley EFIHolley EFI 558-214 INJECTOR HARNESS - EARLY TRUCK LS MULTEC 2 INJECTOR HARNESS - EARLY TRUCKPart# 558-214Free ShippingIn Stock
$261.95
Holley EFIHolley EFI 558-216 EV6 Unterminated Injector Harness Kit EV6 Unterminated Injector Harness KitIn Stock
$143.05
Holley EFIHolley EFI 558-219 Injector Driver HarnessPart# 558-219Free ShippingIn Stock
$297.95
Holley EFIHolley EFI 558-220 GDI Sub Harness - Early LTx Engine Compatible with Early GM® Gen V LTx Engines. This product is not created or sold by GM®.In Stock
$143.05
Holley EFIHolley EFI 558-221 GDI Sub Harness - Late LTx Engine Compatible with Late GM® Gen V LTx Engines. This product is not created or sold by GM®.In Stock
$140.35
In Stock
$22.70
Holley EFIHolley EFI 558-304 HEI GM Small Cap Ignition Harness HEI Ignition Harness for Avenger EFI, HP EFI & Dominator EFIIn Stock
$56.87
Holley EFIHolley EFI 558-305 Ford TFI Ignition Harness Ford TFI Ignition Harness for Avenger EFI, HP EFI & Dominator EFIIn Stock
$120.55
Holley EFIHolley EFI 558-306 Universal Unterminated Ignition Harness Universal Unterminated Ignition Harness for HP EFI & Dominator EFIPart# 558-306Free ShippingIn Stock
$175.45
Holley EFIHolley EFI 558-307 Universal Coil On/Near Plug Harness For use with Holley® HP and Dominator ECUs and other EFI systemsPart# 558-307Free ShippingIn Stock
$179.95
Holley EFIHolley EFI 558-308 Main Power Harness Main Power Harness for Avenger EFI, HP EFI, & Dominator EFIIn Stock
$99.85
Holley EFIHolley EFI 558-310 Gen III HEMI Coil Harness - Early Coils Gen III HEMI Coil Harness, Early Coils, for HP EFI & Dominator EFIPart# 558-310Free ShippingIn Stock
$179.95
Holley EFIHolley EFI 558-311 Gen III HEMI Coil Harness - Late Coils Gen III HEMI Coil Harness, Late Coils, for HP EFI & Dominator EFIPart# 558-311Free ShippingIn Stock
$186.95
Holley EFIHolley EFI 558-312 HP Smart Coil Ignition Harness For use with Holley® HP and Dominator ECUs and other EFI systemsPart# 558-312Free ShippingIn Stock
$268.95
Holley EFIHolley EFI 558-314 Ford 2V Modular Coil Harness 99-04 2 Valve Ford Modular Coil Harness, For HP EFI & Dominator EFIPart# 558-314Free ShippingIn Stock
$223.95
Holley EFIHolley EFI 558-317 Coil Harness Compatible with 2011 to 2015 Ford Coyote Coil Harness, For HP EFI & Dominator EFIPart# 558-317Free ShippingIn Stock
$209.95
Part# 558-318Free ShippingIn Stock
$273.95
Holley EFIHolley EFI 558-321 LS COIL HARNESSES Factory replacement coil harness for stock LS coils, does not fit LS1 or LS6 Coils.Part# 558-321Free ShippingIn Stock
$186.95
Holley EFIHolley EFI 558-322 Ford Coyote Ti-VCT Coil Harness (2015.5-2017) Ford Coyote Ti-VCT Coil Harness (2015.5-2017)Part# 558-322Free ShippingIn Stock
$232.95
Holley EFIHolley EFI 558-323 HyperSpark Ignition Adapter Adapters HyperSpark Distributors to Holley EFI Main Harnesses, for use with Terminator X EFI.In Stock
$44.96
Holley EFIHolley EFI 558-325 Pro-Billet Ignition Adapter Adapter MSD Pro-Billet Distributors to Holley EFI Main Harnesses, for use with Terminator X EFI.In Stock
$37.89
Holley EFIHolley EFI 558-326 LS Coil Extension Harnesses Allows remote mounting of LS ignition coils.In Stock
$121.45
Holley Sniper EFIHolley Sniper EFI 558-328 HyperSpark Plug And Play Main Harness Plug And Play Main Harness for Sniper EFI SystemsPart# 558-328Free ShippingIn Stock
$305.95
Holley EFIHolley EFI 558-400 Connector J1A/B Input/Outputs Auxiliary Harness Connector J1A/B Inputs/Outputs Auxiliary Harness for Terminator X, HP, and Dominator EFI systemsIn Stock
$122.35
Holley EFIHolley EFI 558-401 Dominator EFI Auxiliary Harness Dominator EFI Connector J2A Auxiliary HarnessPart# 558-401Free ShippingIn Stock
$217.95
Holley EFIHolley EFI 558-402 Dominator EFI Auxiliary Harness Dominator EFI Connector J2B Auxiliary HarnessPart# 558-402Free ShippingIn Stock
$168.25
Holley EFIHolley EFI 558-403 Dominator EFI Auxiliary Harness Dominator EFI Connector J3 Auxiliary HarnessPart# 558-403Free ShippingIn Stock
$168.25
Holley EFIHolley EFI 558-404 Dominator EFI Auxiliary Harness Dominator EFI Connector J4 Auxiliary HarnessPart# 558-404Free ShippingIn Stock
$214.95
Holley EFIHolley EFI 558-406 Dominator EFI GM Drive-By-Wire Harness Dominator EFI GM Drive-By-Wire HarnessPart# 558-406Free ShippingIn Stock
$232.95
Part# 558-407Free ShippingIn Stock
$165.55
Holley EFIHolley EFI 558-408 j2A, j2B, j3, j4 Connector & Pin Kit j2A, j2B, j3, j4 Connector & Pin Kit - Contains connectors & pins, but no wiring. for Dominator EFIPart# 558-408Free ShippingIn Stock
$209.95
Part# 558-409Free ShippingIn Stock
$89.96
Holley EFIHolley EFI 558-411 Dominator EFI GM Dual Drive-By-Wire Harness Dominator EFI GM Dual Drive-By-Wire HarnessPart# 558-411Free ShippingIn Stock
$358.95
Holley EFIHolley EFI 558-414 Terminator Main Harness Replacement main wiring harness for Terminator EFI kits 550-405 and 550-406Part# 558-414Free ShippingIn Stock
$477.95
In Stock
$38.58
Holley EFIHolley EFI 558-417 Gen III HEMI Drive-By-Wire Harness - Early Pedal Gen III HEMI Drive-By-Wire Harness - Early Harness with the larger TYCO/AMP connector ('03-'07 cars, '03-'06 trucks) Dominator EFI Only<br><br>Golden Rule: These are plug-and-play harnesses. If they don't plug, don't play.<br><br>Only the 0459 1847 factory drive-by-wire throttle body has been pre-calibrated and approved for use with these harnessesPart# 558-417Free ShippingIn Stock
$157.95
Last ChanceHolley EFIHolley EFI 558-418 Gen III HEMI Drive-By-Wire Harness - Late Pedal Gen III HEMI Drive-By-Wire Harness - Late pedal with the compact Molex connector ('08-2012 Up cars, '07- 2012 Trucks) Dominator EFI Only<br><br>Golden Rule: These are plug-and-play harnesses. If they don't plug, don't play.<br><br>Only the 0459 1847 factory drive-by-wire throttle body has been pre-calibrated and approved for use with these harnessePart# 558-418Free ShippingIn Stock
$238.95
Holley EFIHolley EFI 558-420 Terminator EFI Input/Output Kit This kit contains 4 extra input wires and 1 extra output wire that the base Terminator EFI harness does not contain.In Stock
$50.63
Holley EFIHolley EFI 558-422 Ford Coyote (2011-2017) Drive-By-Wire Harness Ford Coyote (2011-2017) Drive-By-Wire HarnessPart# 558-422Free ShippingIn Stock
$268.95
Part# 558-424Free ShippingBackordered
Est. Ship Date: Coming Soon
$56.87
Part# 558-425Free ShippingIn Stock
$63.17
Part# 558-426Free ShippingIn Stock
$75.86
Part# 558-428Free ShippingIn Stock
$50.63
Holley EFIHolley EFI 558-429 Dominator EFI GM Drive-By-Wire Harness - Early Truck Drive-By-Wire Harness - Early TruckPart# 558-429Free ShippingIn Stock
$256.95
In Stock
$40.27
Holley EFIHolley EFI 558-431 Crank/Cam Ign. Harness. Fully terminated harness. Crank/Cam Ign. Harness for Ferrous Crank/Magnetic Cam Hall Effect Sensors. Fully terminated harness.In Stock
$93.55
Part# 558-432Free ShippingIn Stock
$152.95
Holley EFIHolley EFI 558-433 Digital Dash I/O Adapter w/Unterminated Vehicle Harness Digital Dash I/O Adapter with unterminated Vehicle HarnessPart# 558-433Free ShippingIn Stock
$336.95
Holley EFIHolley EFI 558-434 Digital Dash I/O Adapter w/Terminated Vehicle Harness Digital Dash I/O Adapter with terminated Vehicle HarnessPart# 558-434Free ShippingIn Stock
$376.95
Holley EFIHolley EFI 558-436 Terminated Vehicle Harness for Digital Dash Terminated Vehicle Harness For Digital DashPart# 558-436Free ShippingIn Stock
$214.95
Last ChanceHolley EFIHolley EFI 558-437 Hemi Drive-By-Wire Throttle Body Harness Hemi DBW Harness 2013+ Applications (Holley Dominator EFI Only)In Stock
$111.55
Part# 558-438Free ShippingIn Stock
$125.95
Holley EFIHolley EFI 558-439 Terminator Throttle Body Harness Injector upgrade harness for Terminator Throttle Bodies.Part# 558-439Free ShippingIn Stock
$238.95
Holley EFIHolley EFI 558-440 Universal 4 EV14 Cylinder Injector Harness Universal 4 Cylinder EV14 Injector Harness for HP EFI & Dominator EFIIn Stock
$114.25
Holley EFIHolley EFI 558-443 CAN to USB Dongle - Communication Cable USB/CAN Communication Cable - For Holley EFI - Sniper EFI - Terminator XPart# 558-443Free ShippingIn Stock
$77.21
Last ChanceHolley EFIHolley EFI 558-448 J1A/J1B ECU Connector Kit J1A/J1B ECU Connector Kit with Pins and SealsIn Stock
$77.95
Holley EFIHolley EFI 558-450 Chrysler HEMI Drive-By-Wire Dual Throttle Body Harness Compatible with 2013-Up Chrysler Gen3 Hemi EnginesPart# 558-450Free ShippingIn Stock
$358.95
In Stock
$41.95
In Stock
$50.63
Holley EFIHolley EFI 558-456 Pro-Dash Input/Output Harness Unterminated Input/Output Wiring HarnessPart# 558-456Free ShippingIn Stock
$268.95
Part# 558-459Free ShippingIn Stock
$223.95
Holley EFIHolley EFI 558-461 Drive-by-Wire Throttle Body Harness Compatible with 2005-2010 Ford Mustang GT and GT500 ModelsPart# 558-461Free ShippingIn Stock
$448.95
In Stock
$66.75
Holley EFIHolley EFI 558-465 CAN SplitterIn Stock
$44.96
In Stock
$44.96
Ignition & Electrical
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