2003 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 )

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Crank Triggers, 12-1X LS, Hall Effect, 8 in. Diameter, Aluminum, Silver, Adjustable Bracket, Black, 3-wire Pickup, Gen III, IV, LS, Kit

Part Number: HLY-556-174

5.0 out of 5 stars ( 1 )

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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 )

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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

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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 )

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Ignition Coil Wiring Harnesses, Holley EFI, HP Smart Coil, Ignition Harness, for HP/Dominator ECU, Chevy, LS Based, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L, Each

Part Number: HLY-558-312

4.0 out of 5 stars ( 2 )

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Ignition Systems, Sniper 1 EFI, HyperSpark, Ignition Box, Coil, Distributor, Wire Harness, Chrysler, Dodge, Plymouth, Small Block, LA, Kit

Part Number: SNE-565-304K

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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

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Crank Trigger Replacement Wheels, 8 in. Diameter, 12-1X, Crank Trigger Wheel, Aluminum, Natural Finish, 3-wire Hall Effect, Chevy, Ford, Each

Part Number: HLY-556-180

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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 )

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Crank Triggers, Holley EFI, 12-1X LS, Hall Effect, 6.56 in. Diameter, Aluminum, Silver, Adjustable Bracket, 3-wire Pickup, Gen III, IV, SBC, Kit

Part Number: HLY-556-176

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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

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Crank Trigger Wheels, Holley EFI, Replacement, 12-1X, Hall Effect, 6.25 in. Diameter, Aluminum, Silver, Chevy, LS, Small Block, Each

Part Number: HLY-556-185

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Ignition Coil Wiring Harnesses, Holley EFI, Coil Harness, Ford 4V Modular, Plug-and-Play, for HP, Dominator EFI Systems, Ford, Mustang, 4.6L, Each

Part Number: HLY-558-315

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Crank Trigger Wheels, Holley EFI, Replacement, 12-1X LS, Hall Effect, 7.5 in. Diameter, Aluminum, Silver, Universal, Each

Part Number: HLY-556-181

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Crank Trigger Wheels, Holley EFI, Replacement, 12-1X LS, Hall Effect, 6.56 in. Diameter, Aluminum, Silver, Chevy, Gen III, IV, Engines, Each

Part Number: HLY-556-183

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Estimated Ship Date: Nov 24, 2025 if ordered today

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