Holley Ignition Components

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: Monday 2/23/2026 if shipped by air

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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

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Ignition Coil Wiring Harnesses, Holley EFI, C-N-P Ignition Sub-Harness, 12-gauge Wire, for HP EFI, Smart Coils, Chevy, LS Based, 4.8-7.0L, Each

Part Number: HLY-558-318

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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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: Monday 2/23/2026 if shipped by air

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Crank Triggers, Holley EFI, 12-1X LS, Hall Effect, 7.25 in. Diameter, Aluminum, Silver, Adjustable Bracket, 3-wire Pickup, Gen III, IV, SBC, Kit

Part Number: HLY-556-175

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Ignition Coil Brackets, Holley EFI, Gen III, LS Ignition Coil, Remote Relocation Bracket, Aluminum, Black Finish, Hardware Included, Pair

Part Number: HLY-561-128

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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