Availability
Ignition Coil Wiring Harnesses, Holley EFI, Replacement, LS Coil Harness, Plug-and-Play, OE Connectors, Not for LS1/LS6, Chevy, LS Engine, Pair
Part Number: HLY-558-321
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Ignition Coil Wiring Harnesses, Holley EFI, Coil-On/Near Plug Harness, for GM LSx Coil Harness, Holley 558-312, to HP, Dominator EFI Systems, Each
Part Number: HLY-558-307
Not Yet Reviewed
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Ignition Coil Wiring Harnesses, Holley EFI, LS Coil Extension Harness, 36 in. Long, OE Connectors, Plug & Play, Techflex F6 Loom, Chevy, 4.8-70L, Pair
Part Number: HLY-558-326
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Transmission Harnesses, Holley EFI, Control Harness, F-Body, T-56 Tranny, Plug-and-Play, VSS, Reverse Lockout, for Terminator X, Max X ECUs, Each
Part Number: HLY-558-481
Not Yet Reviewed
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Computer Mounting Brackets, Holley EFI, HP, Terminator, Terminator X, ECU Mount Bracket, Steel, Black, Passenger Seat, Ford, Mustang, Fox Body, Each
Part Number: HLY-554-157
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Spark Plug Wire Sets, Holley EFI, Cut-toFit, for Smart Coil, 36 in. Long, Black Wire, 8.00mm Core, Black Silicone, Plug Boot, Straight, Universal, Set
Part Number: HLY-561-113
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Weatherproof Connectors, Holley EFI, GM LSx Engine, Main Harness Connectors, Connectors, Pins, Seals, Cavity Plugs included, Kit
Part Number: HLY-570-103
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Ignition Coil Brackets, Holley EFI, Gen III, LS Ignition Coil, Remote Relocation Bracket, Aluminum, Black Finish, Hardware Included, Pair
Part Number: HLY-561-128
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Ignition Coil Wiring Harnesses, Holley EFI, Coil Harness, Ford 2V Modular, Plug-and-Play, for HP, Dominator EFI Systems, Ford, Lincoln, Mercury, Each
Part Number: HLY-558-314
Not Yet Reviewed
Estimated Ship Date: Monday 1/5/2026
Estimated Ship Date: Monday 1/5/2026
Spark Plug Wire Sets, Holley EFI, Cut-toFit, for Smart Coil, 36 in. Long, Red Wire, 8.00mm Core, Gray Silicone, Plug Boot, Straight, Universal, Set
Part Number: HLY-561-115
Not Yet Reviewed
Estimated Ship Date: Jan 22, 2026 if ordered today
Estimated Ship Date: Jan 22, 2026 if ordered today
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