Engine Wiring Harnesses
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Holley Engine Main Harness Ford 5.0L/5.8L 558-128
Holley
MSRP: $594.40$540.37Engine Wiring Harness - Plug-and-Play - Small Block Ford - EachMSRP: $594.40$540.37 -
Holley Main Harness - Univesal Un-Terminated 558-105
Holley
MSRP: $554.99$504.54EFI Wiring Harness - Unterminated Main Harness - Holley HP / Dominator EFI - KitMSRP: $554.99$504.54 -
Holley Trans Wiring Harness Gm 4L60/80E 558-405
Holley
MSRP: $331.17$301.07EFI Wiring Harness - Transmission - Holley Dominator EFI - GM 4L60E / 4L80E - EachMSRP: $331.17$301.07 -
Holley Sub-Harness Mopar Gen-3 Hemi Vvt & Srv 558-132
Holley
MSRP: $172.71$157.01EFI Wiring Harness - Terminator X - Variable Valve Timing - Mopar Gen III Hemi - EachMSRP: $172.71$157.01 -
Holley Main Harness - Universal Mpfi 558-104
Holley
MSRP: $551.79$501.62EFI Wiring Harness - MPFI Main Harness - Holley HP / Dominator EFI - Universal - EachMSRP: $551.79$501.62 -
Holley Efi Main Power Harness 558-308
Holley
MSRP: $116.75$106.13EFI Wiring Harness - Main Power - Holley Dominator EFI - EachMSRP: $116.75$106.13 -
Holley Main Wiring Harness Ls2 & Ls3 558-103
Holley
MSRP: $657.60$597.82EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 58x Reluctor Wheel - LS2 / LS3 / LS7 - GM LS-Series - EachMSRP: $657.60$597.82 -
Holley Main Wiring Harness Ls1 & Ls6 558-102
Holley
MSRP: $657.60$597.82EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series - EachMSRP: $657.60$597.82 -
Holley 7-Pin Main Harness - Sniper Tbi 558-490
Holley
MSRP: $181.79$165.26EFI Wiring Harness - Main Battery Harness - Fuse / Fuel Pump Relays - KitMSRP: $181.79$165.26 -
Holley Ignition Harness W/Magnetic Pickup 558-303
Holley
MSRP: $81.41$74.01EFI Wiring Harness - Magnetic Pickup - Holley Dominator EFI - GM LS-Series - EachMSRP: $81.41$74.01 -
Holley J2B Auxiliary Harness Kit 558-402
Holley
MSRP: $176.87$160.79EFI Wiring Harness - J2B Auxiliary Connector Harness - Holley Dominator EFI - Universal - KitMSRP: $176.87$160.79 -
Holley Auxiliary Harness J2A Connector 558-401
Holley
MSRP: $246.11$223.74EFI Wiring Harness - J2A Auxiliary Connector Harness - Holley Dominator EFI - Universal - KitMSRP: $246.11$223.74