Holley Ignitions & Electrical

Weatherproof Connectors, Holley EFI, J4 Input/Output Connector, OEM Style, Black Plastic, includes Pins, Seals, TPA, Kit

Part Number: HLY-570-348

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Fuel Injection System Wiring Harnesses, Holley EFI, Ford GT500, 3V Drive-by-Wire, Throttle Body Harness, Plug-and-Play, Ford, Mustang, 4.6L, 5.4L, Kit

Part Number: HLY-558-461

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Data Acquisition Components, Holley EFI, EGT Probe, 90 Degree, Open End Tip, 32.25 in Harness, 1/4 in. Probe, Stainless Wire Cover, Each

Part Number: HLY-554-178

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Data Acquisition Components, EGT Cap, Stainless Steel, 1/4 in., 8-piece, Set

Part Number: HLY-543-164

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Crank Trigger Wheels, Holley EFI, Replacement, 12-1X LS, Hall Effect, 7.25 in. Diameter, Aluminum, Silver, Universal, Each

Part Number: HLY-556-182

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Alternators, High-amp, DR44G Style, Cast Aluminum, Natural Finish, Serpentine Pulley, 105 amps, 12V, Internal Regulator, Chevy, 4.8-7.0L, Each

Part Number: HLY-197-300

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Adapter Harnesses, Holley EFI, MAP Sensor Adapter, MPFI Weatherpack 2-pin to 3-pin Delphi GT Connector, Plug-and-Play, LS Engine Harness, Each

Part Number: HLY-558-466

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

Part Number: HLY-561-130

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

Transmission Harnesses, Holley EFI, Control Harness, Tremec TKX-TKO Tranny, Plug-and-Play, VSS, Reverse Lockout, for Terminator Max X ECUs, Each

Part Number: HLY-558-482

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

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

Part Number: HLY-12-759

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Wire Connectors, Holley EFI, 4-pin CAN Connector, Main Harness Side, Mizu-P25, 4-pin, Male, Black Plastic, Universal, Each

Part Number: HLY-570-229

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Spark Plug Wire Sets, Holley EFI, Cut-to-Fit, OE Coil Packs, Black Wire, 8.00mm Core, Black Silicone, Plug Boot, Straight, Chevy, LS Engine, Set

Part Number: HLY-561-110

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• Free Shipping

Ignition Coils, Holley EFI, Gen III Hemi, Smart Coils, Black, 32,000V, Rectangular, Connector/Pins, for HP, Dominator, 8-piece, Chrysler, Dodge, Set

Part Number: HLY-556-163

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 1.000 in. I.D., 10 ft. Long, Each

Part Number: HLY-573-110

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Distributor Caps, Holley EFI, Coil-on-Plug, Black Cap, Screw Down Style, Black, compatible with Dual-Sync Distributors, 200 Series, Each

Part Number: HLY-566-103

Not Yet Reviewed

Estimated Ship Date: Today

Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coil, Trans Control, Sensors, USB Cable, Chevy, LS, 4.8-6.2L, 4x Cam, 58x Crank, Kit

Part Number: HLY-550-920T

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Weatherproof Connectors, Holley EFI, J3 Input/Output Connector, OEM Style, Black Plastic, includes Pins, Seals, TPA, Kit

Part Number: HLY-570-347

Not Yet Reviewed

Estimated Ship Date: Today

Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 0.750 in. I.D., 50 ft. Long, Each

Part Number: HLY-573-109

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Gauge Wire Harnesses, Holley EFI, Replacement, Pro Dash Service Harness, Plug-and-Play, for 553-111, 553-112, Each

Part Number: HLY-558-446

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

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

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Gauge Wiring Harnesses, Holley EFI, Replacement, I/O Adapter, Plug-and-Play, for 7 in. Digital Dash, Each

Part Number: HLY-558-432

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

Engine Management Systems, Terminator X, Up to 8-Injectors, 8-Coil, Analog, CANBUS, Sensors, USB Tuning Cable, Chevy, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-909T

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

Convoluted Tubing, Wire Looms and Wire Sleeves, Holley EFI, Split Wire Loom, Black Nylon, Slip-on Insulation, 0.750 in. I.D., 10 ft. Long, Each

Part Number: HLY-573-108

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Wiring Harnesses, Holley EFI, Benchtop Harness, Test Harness, EFI Input Connectors, Power Switch, for HP, Dominator, Terminator, Sniper ECUs, Each

Part Number: HLY-558-127

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Crank Triggers, Holley EFI, 7 in. Diameter, Aluminum, Silver, Adjustable Bracket, Black, 3-wire Pickup, 12-1X, Hall Effect, Chevy, Small Block, Kit

Part Number: HLY-556-171

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order