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Holley HP EFI ECU and Harness Kits 550-601

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, for GM TPI, Holley Stealth Ram, Kit

Part Number: HLY-550-601

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Mid-Mount Complete Accessory Systems 20-180

Accessory Drive Systems, LS Mid-Mount, Serpentine Style, Alternator, Water Pump, Power Steering, A/C, Hardware, Natural Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-180

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley LS Engine Swap Accessory Drive Systems 20-137BK

Accessory Drive Systems, LS Engine Swap, Serpentine, Black, Air Conditioning Pulley, Compressor, Tensioner, Chevy, LS, 4.8-7.0L, Kit

Part Number: HLY-20-137BK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Terminator X Max GM Gen V LT Direct Injection Kits 550-1633-6

Fuel Injection Systems, Terminator X Max, LT4, Direct Injection, ECM, Transmission Controller, 6L80E Power Adder Compatible, GM Early ,Kit

Part Number: HLY-550-1633-6

Not Yet Reviewed

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Holley Terminator X MAX Engine Management Systems 550-1413

Engine Management Systems, Terminator X MAX, 8-EV6 Injectors, 8-Coils, O2 Sensor, Drive-by-Wire, Plug-and-Play, Ford, 5.0L, Kit

Part Number: HLY-550-1413

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

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Estimated Ship Date: Sep 18, 2025 if ordered today

Holley HP EFI ECU and Harness Kits 550-602N

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NKT O2 Sensor, GM, LS, 24x Crank Sensor, Kit

Part Number: HLY-550-602N

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Terminator X Stealth 4500 EFI Fuel Injection Systems 550-1070

Fuel Injection Systems, Terminator X, Stealth 4500 EFI, Eight Injector, Throttle Body, Speed Density, Aluminum, Shiny, Tunable, Kit

Part Number: HLY-550-1070

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Ford 7.3L Godzilla High-Mount Accessory Drive Complete Kits for 1953-1979 F-100, F-250, 1975-1979 F-150 - 20-345BK

Accessory Drive Systems, High-Mount, Serpentine, Alternator, Water Pump, Power Steering, SD-7, Swap Oil Pan, Black Finish, Ford, Godzilla, 7.3L, Kit

Part Number: HLY-20-345BK

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley HP EFI ECU and Harness Kits 550-602

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Chevy, LS, 5.7L, Kit

Part Number: HLY-550-602

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Holley HP EFI ECU and Harness Kits 550-604

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, MPFI, Kit

Part Number: HLY-550-604

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1061

Fuel Injection Systems, Terminator X, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Black, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1061

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Mid-Mount Complete Accessory Systems 20-200BK

Accessory Drive Systems, LT Mid-Mount, Serpentine, Alternator, Power Steering, AC, Water Pump, Pulleys, 6-groove, Black Finish, Chevy, 5.3L, 6.2L, Kit

Part Number: HLY-20-200BK

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Dominator EFI Vehicle Management Systems 550-656

Engine Management Systems, Dominator EFI, Connects 24-EV1 Injectors, 12-Coils, Analog/Digital inputs, 1x Cam Sensor, Chevy, 5.7L, 6.0L, 24x Crank, Kit

Part Number: HLY-550-656

Not Yet Reviewed

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Holley Mid-Mount Complete Accessory Systems 20-291BK

Accessory Drive Systems, Gen III, Hemi VVT, Mid-Mount System, Black Finish, Alternator, A/C, P/S, Water Pump, Bolts, Chrysler, Dodge, 5.7L, 6.4L, Kit

Part Number: HLY-20-291BK

Not Yet Reviewed

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Holley Terminator X Engine Management Systems 550-1213

Engine Management Systems, Terminator X, Up to 8-EV6 Injectors, 8-Coils, Analog Input, O2 Sensor, Plug-and-Play, 3.5 in. Controller, Ford, 5.0L, Kit

Part Number: HLY-550-1213

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1064

Fuel Injection Systems, Terminator X Max, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Aluminum, Black, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1064

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Mid-Mount Complete Accessory Systems 20-163

Accessory Drive Systems, Mid-Mount, Natural, Serpentine, 6-groove, GM Type 2, Sanden SD-7, Chevy, LSA/LS, Kit

Part Number: HLY-20-163

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Mid-Mount Complete Accessory Systems 20-187BK

Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, Water Pump, Counterclockwise, Pulleys, 6-groove, Black Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-187BK

Not Yet Reviewed

Estimated Ship Date: Sep 16, 2025 if ordered today

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Estimated Ship Date: Sep 16, 2025 if ordered today

Holley Mid-Mount Complete Accessory Systems 20-200

Accessory Drive Systems, LT Mid-Mount, Serpentine, Alternator, Power Steering, AC, Water Pump, Pulleys, 6-groove, Natural, Chevy, 5.3L, 6.2L, Kit

Part Number: HLY-20-200

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

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Holley Mid-Mount Complete Accessory Systems 20-200BK

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Holley Terminator LS Plug-and-Play Multi-Port Systems 550-614

Engine Management Systems, Terminator LS, Plug-andPlay, 8-Injectors, 8-Coils, Analog Inputs, with Controller, Chevy, Truck, 4.8-6.0L, 24x Crank, Kit

Part Number: HLY-550-614

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1030

Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Gold, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1030

Not Yet Reviewed

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Holley High-Mount Complete Accessory Systems 20-310BK

Accessory Drive Systems, High-Mount, Serpentine, Alternator, Power Steering, AC, Water Pump, Aluminum, Black, Timing Cover, Ford, 7.3L Godzilla, Kit

Part Number: HLY-20-310BK

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley High-Mount Complete Accessory Systems 20-170

Accessory Drive Systems, Mid-Mount, Serpentine, Water Pump, Power Steering, A/C, Pulleys, with Hardware, Natural Finish, Chevy, LT, 5.3L, 6.2L, Kit

Part Number: HLY-20-170

Not Yet Reviewed

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1021

Fuel Injection Systems, Terminator X, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Black, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1021

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

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Estimated Ship Date: Sep 18, 2025 if ordered today

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1062

Fuel Injection Systems, Terminator X, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Gold, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1062

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

Holley Parts and Accessories