2015 Holley Ignitions & Electrical

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

4.56 out of 5 stars ( 18 )

Estimated Ship Date: Tomorrow

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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

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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

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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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

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Spark Plug Wire Sets, Holley EFI, Assembled, for Coil Packs, Black Wire, 8.00mm Core, Black Silicone, Plug Boot, 135 Degree, Chevy, Camaro, 6.2L, Set

Part Number: HLY-561-100

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Ignition Coil Wiring Harnesses, Holley EFI, Coil Harness, Ford Coyote, Plug-and-Play, for HP EFI, Dominator EFI, Ford, F150, Mustang, 5.0L, Each

Part Number: HLY-558-317

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Spark Plug Wire Sets, Holley EFI, Assembled, for Coil Packs, Red Wire, 8.00mm Core, Gray Silicone, Plug Boot, 135 Degree, Chevy, Camaro, 6.2L, Set

Part Number: HLY-561-102

3.4 out of 5 stars ( 5 )

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Wiring Harnesses, Holley EFI, Gen III Hemi, VVT, SRV, Sub-Harness Only, Plug-and -Play, for Terminator X, Terminator X Max EFI, Dodge, 5.7-6.4L, Each

Part Number: HLY-558-132

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Relays, Dual Fuel Pump, 40 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Chrysler, Dodge, Ford, Kit

Part Number: HLY-12-759

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Estimated Ship Date: Tomorrow

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Wiring Harness, Holley EFI, Gen III Hemi, VVT, Sub-Harness Only, Plug-and -Play, for Terminator X, Terminator X Max EFI, Dodge, 5.7L, 6.4L, Each

Part Number: HLY-558-131

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Estimated Ship Date: Tomorrow

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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

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