Holley Ignitions & Electrical

Oxygen Sensors, Holley EFI, Replacement, O2 Sensor, Bosch LSU Style, 3-wire, Thread-in, Wire Harness, for Sniper EFI or Terminator X Systems, Each

Part Number: HLY-554-155

4.5 out of 5 stars ( 54 )

Estimated Ship Date: Today

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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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Oxygen Sensor, Bosch LSU4, Wideband, Thread-in, 7-Wire, 14 in. Long 8-pin, Rectangular Plug, Each

Part Number: HLY-554-101

3.21 out of 5 stars ( 19 )

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Sensors, Throttle Position Kit, Includes Sensor, Brackets, Wire Harness, Hardware, for Holley Carburetors, Model 4150, 4160, Electric Choke, Each

Part Number: HLY-534-202

4.03 out of 5 stars ( 33 )

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MAP Sensors, Bosch Style, 3 Bar, 29.0 psi, for All Holley EFI Kits, Each

Part Number: HLY-554-107

4.25 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Crankshaft Position Sensors, Holley EFI, Replacement, Hall Effect, Magnetic Trigger, 3/4 in.-16 Thread, 6 in. Harness, with Connector, Terminals, Each

Part Number: HLY-554-118

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

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MAP Sensors, Bosch Style, 5 Bar, 58.0 psi, 0-520 kpa, 1/8-27 NPT Thread, for Holley HP and Dominator Kits, Each

Part Number: HLY-554-108

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Relays, Fuel Pump, 30 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Each

Part Number: HLY-12-753

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

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MAP Sensors, Holley EFI, 3.5 Bar Range, 37.45 psi, 1/8 in.-27 NPT, Output 0.5-4.5 V, Stainless Case, for Forced Induction Engines, Each

Part Number: HLY-554-134

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, 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: Today

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Transmission Harness, Holley EFI, Pre-terminated, Ford, 1998+, 4R70W/4R75W Transmissions, Each

Part Number: SNE-558-470

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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: Today

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Modules, Sniper EFI, Ignition Coil Driver, Plastic Case, Black, Compact, 1 Channel, Labeled Wire Harness, for Canister Ignition Coils, Each

Part Number: SNE-556-150

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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MAP Sensors, Holley EFI, 1 Bar Range, Bosch Style, 1/8 in.-27 NPT, Output 0.5-4.5 V, Stainless Case, for Naturally Aspirated or Nitrous Engine, Each

Part Number: HLY-554-133

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Wire Connector Replacement Parts, Holley EFI, Replacement, J2A, J2B, J3, J4, Male/Female Connectors, Pins, Weatherproof Seals, for Dominator EFI, Kit

Part Number: HLY-558-408

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MAP Sensors, Holley EFI, Replacement, Bosch Style, 1 Bar, Black Plastic Housing, for Terminator EFI System, Each

Part Number: HLY-554-120

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Weatherproof Connectors, Holley EFI, GM LSx Engine, Main Harness Connectors, Connectors, Pins, Seals, Cavity Plugs included, Kit

Part Number: HLY-570-103

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Electrical Wires, Holley EFI, Shielded Cable, Black Jacket, 3-conductor, 20 gauge Wire, Internally Shielded, 100 ft. Spool, Each

Part Number: HLY-572-104

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Camshaft Sync Pickups, Holley EFI, Camshaft Sensor, Hall Effect, M12x1 Thread, Magnetic Target, 1/4 in.-20 Thread, 3/8 in. Long, with Hardware, Kit

Part Number: HLY-554-127

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Throttle Position Sensors, Replacement, Multi-port, for Holley 105 mm Throttle Body, Non-Contact Magnetic, Each

Part Number: HLY-543-112

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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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

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Ignition Coil Wiring Harnesses, Holley EFI, Gen III Hemi, Coil Harness, Late Style, OE Connectors, for HP, Dominator EFI Systems, Dodge, 5.7L, Each

Part Number: HLY-558-311

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 22, 2025 if ordered today

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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: Today

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Camshaft Sync Pickups, Holley EFI, Cam Sync Sensor, 3-wire Hall Effect Pickup, M12x1 Threads, Pre-Terminated, for Flying Magnetic Target Only, Each

Part Number: HLY-554-125

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