Holley Ignitions & Electrical

Wiring Harnesses, Holley EFI, GM Gen V, GDI Early, Sub-Harness, Direct Injection, Pre-Terminated, 4-pin Fuel Sensor, GM, Early LT Based, Engines, Each

Part Number: HLY-558-220

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Wiring Harnesses, RetroBright, Adapter, H4, Non-Standard Plug, Pin-Out Swap, Plastic Version, Entry Level, Pair

Part Number: HLY-H821

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Throttle Position Sensors, Replacement, Pro-Jection, Multi-Port, 2-barrel, 4-barrel, Each

Part Number: HLY-543-29

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 13, 2026 if ordered today

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Wiring Connector Replacement Parts, Holley EFI, Replacement, Terminal Pins, Male, Metri-Pack, 20-22 gauge wire, 100-piece, Set

Part Number: HLY-571-102

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Distributor Caps, Holley EFI, Coil-on-Plug, Black Cap, Screw Down Style, Black, compatible with Dual-Sync Distributors, 100 Series, Each

Part Number: HLY-566-101

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Hemi Cam/Crank Connector, Main Harness, APEX 1.2, 3-pin, Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-234

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Weatherproof Connectors, Holley EFI, LS1 Knock Sensor Connector, Main Harness, Metripack, 2-pin Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-219

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PIGTAIL HARNESS, HILBORN TPS

Part Number: HLY-EL109-3-HIL

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Wiring Connector Replacement Parts, Holley EFI, Replacement, Weather Seal, Green, GT150, 20-22 gauge wire, 100-piece, Set

Part Number: HLY-571-109

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Distributors, Holley EFI, Dual-Sync, Hall Effect, Computer-controlled, Male/HEI, Black Cap, Shiny Housing, Chrysler, Dodge, Plymouth, 6.3L, 6.6L, Each

Part Number: HLY-565-209

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Ford Modular, CTS Connector, Main Harness, SSC, 2-pin, Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-236

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Estimated Ship Date: Today

Weatherproof Connectors, Holley EFI, Coyote, CTS Sensor Connector, Main Harness, MX 150, 2-pin Female, Black Plastic, Pins, Seals, TPA, Each

Part Number: HLY-570-226

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Weatherproof Connectors, Holley EFI, Hemi CTS Connector, Main Harness, 1.5mm YESC, 2-pin, Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-233

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Hemi, MAP Sensor Connector, Sealed, 3-pin, Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-240

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, LS 58X Crank/CPS Sensor Connectors, Metripack, 3-pin, Female, Black, with Pins, Seals, TPA, 10-piece, Chevy, Set

Part Number: HLY-570-318

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Estimated Ship Date: Apr 13, 2026 if ordered today

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

Part Number: HLY-558-310

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Ford Modular/Coyote, Manifold Air Temp Connector, SSC, 2-pin, Female, Gray Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-237

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Estimated Ship Date: Apr 13, 2026 if ordered today

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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

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Wiring Connector Replacement Parts, Holley EFI, Replacement, Terminal Pins, Female, SSC Series, 22-18 gauge wire, 100-piece, Set

Part Number: HLY-571-126

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Ignition Coil Spacers, Plastic, Beige, Chevrolet, Small Block LS, Set of 20

Part Number: HLY-241-199

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Modular/Coyote, Knock Sensor Connector, Main Harness, MX 150, 6-pin Male, Black Plastic, Pins, Seals, TPA, Each

Part Number: HLY-570-225

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Ford Modular/Coyote, Idle Air Control Connector, SSC, 2-pin, Female, Black Plastic, with Pins, Seals, TPA, Each

Part Number: HLY-570-238

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Wire Connectors, RetroBright, Replacement, Unterminated Connector, Female, 3-pin, Plastic, Black, for H4 or 9003 System, Pins Not Included, Each

Part Number: HLY-RBEC121

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Wiring Connector Replacement Parts, Holley EFI, Replacement, Female Terminal Pins, Male, Mizu-P25, 100-piece, Set

Part Number: HLY-571-115

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Weatherproof Connectors, Holley EFI, Hemi, CTS Connector, Main Harness, Molex 2-pin, Female, Black Plastic, includes Pins, Seals, TPA, Each

Part Number: HLY-570-228

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Estimated Ship Date: Apr 13, 2026 if ordered today

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