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Holley HP EFI Universal Retrofit Engine Management Systems 550-500

Fuel Injection Systems, HP EFI Retrofit, Engine Management, Multi Point, 4-barrel, 4150 Flange, Sensors, Fuel Rails, Regulator, Wire Harness, Kit

Part Number: HLY-550-500

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

FiTech Ultimate LS Truck EFI 750 HP Fuel Injection Systems with Hy-Fuel 78009

Fuel Injection System, Ultimate LS Truck EFI, 750 HP, LS1/LS2/LS6, With Transmission Controller, With Tight Fit In-Tank Fuel Pump, Kit

Part Number: FIF-78009

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Holley Terminator X Stealth 4500 2x4 EFI Fuel Injection Systems 550-1080

Fuel Injection Systems, Terminator X, Stealth 4500, 2x4 EFI, Eight Injector, Dual Throttle Body, Speed Density, Aluminum, Shiny, Tunable, Kit

Part Number: HLY-550-1080

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 73071

Fuel Injection System, Ultimate Rebel LS 500 HP EFI, Short Intake, Cable Driven 92mm, 36lb, Chevy, LS1, Kit

Part Number: FIF-73071

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 79889

Fuel Injection System, Ultimate Rebel, 500 HP, Cathedral Port, 92mm, In-Tank Fuel Pump, LS3 Coils, 36 Lb., EV1, With Transmission Controller, Kit

Part Number: FIF-79889

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79002

Fuel Injection, Ultimate LS, Ultimate LS Kit LS1/LS2/LS6 - 500HP w/ Trans Control, w/ led coil pack set

Part Number: FIF-79002

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems with Force Fuel 75209

Fuel Injection System, Ultimate LS 750 HP, Multiport, Tall Intake for Truck Accessories Cathedral Port, With Transmission Controller, Force Fuel, Kit

Part Number: FIF-75209

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 78101

Fuel Injection, Ultimate LS, Ultimate LS Master Kit w/70001 Kit Plus Inline Fuel Pump Kit, w/ coil pack set

Part Number: FIF-78101

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 78609

Fuel Injection, Ultimate LS, Ultimate LS Tall Master Kit 70009 w/ 50015 In-Tank Module, 54001 regulator, w/ coil pack set

Part Number: FIF-78609

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems with Go Fuel In-Tank Module 79608

Fuel Injection System, Ultimate LS 750 HP, Tall Intake for Truck Accessories Cathedral Port, In-Tank Pump, LED Coil Packs, Kit

Part Number: FIF-79608

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 73073

Fuel Injection System, Ultimate Rebel LS 750 HP EFI, Short Intake, Cable Driven 102mm, 55lb, Chevy, LS1/LS2/LS6, Kit

Part Number: FIF-73073

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Nitro-Port Cast LS1 500 HP Fuel Injection Systems 73104

Fuel Injection System, Nitro-Cast LS1 EFI, 500 HP, 92mm Throttle Body, 36lb. Injectors, Cable Driven, with Transmission Controller, Chevy, Kit

Part Number: FIF-73104

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

FiTech Nitro-Port Cast LS3 750 HP Fuel Injection Systems 73305

Fuel Injection System, Nitro-Cast LS3 EFI, 750 HP, 102mm Throttle Body, 55lb. Injectors, Dual O2 Sensor, Cable Driven, Chevy, Kit

Part Number: FIF-73305

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 70007

Fuel Injection System, Ultimate LS EFI, 500 HP, LS1/LS2/LS6, With Transmission Controller, Kit

Part Number: FIF-70007

3.5 out of 5 stars ( 10 )

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FiTech Ultimate LS Truck EFI 500 HP Fuel Injection Systems 71007

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026

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Holley HP EFI Universal Retrofit Engine Management Systems 550-501

Fuel Injection Systems, HP EFI Retrofit, Engine Management, Multi Point, 4-barrel, 4500 Flange, Sensors, Fuel Rails, Regulator, Wire Harness, Kit

Part Number: HLY-550-501

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Edelbrock Pro-Flo 4 XT EFI Systems 35870

Edelbrock Pro-Flo 4 XT EFI Systems 35870

Fuel Injection System, Pro-Flo 4 XT, Self-Learning, Sequential Multi-Port, Satin, 550 HP Max, 1965 and Later BB Chevy Rectangular Port, Kit

Part Number: EDL-35870

Not Yet Reviewed

Estimated Ship Date: Mar 26, 2026 if ordered today

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Estimated Ship Date: Mar 26, 2026 if ordered today

FiTech Nitro-Port Cast LS3 500 HP Fuel Injection Systems 73304

Fuel Injection System, Nitro-Cast LS3 EFI, 500 HP, 92mm Throttle Body, 36lb. Injectors, Cable Driven, with Transmission Controller, Chevy, Kit

Part Number: FIF-73304

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

FiTech Nitro-Port Cast LS1 500 HP Fuel Injection Systems 73103

Fuel Injection System, Nitro-Cast LS1 EFI, 500 HP, 92mm Throttle Body, 36lb. Injectors, Dual O2 Sensor, Cathedral Port, Cable Driven, Chevy, Kit

Part Number: FIF-73103

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

FiTech Nitro-Port Cast LS1 750 HP Fuel Injection Systems 73106

Fuel Injection System, Nitro-Cast LS1 EFI, 750 HP, 102mm Throttle Body, 55lb. Injectors, Cable Driven, with Transmission Controller, Chevy, Kit

Part Number: FIF-73106

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 71717

Fuel Injection System, Ultimate Rebel LS 500 HP EFI, Short Intake, Cable Driven 92mm, 36lb, Chevy, LS3, Kit

Part Number: FIF-71717

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 73213

Fuel Injection System, Ultimate Rebel LS, 750 HP EFI, Short Intake, Cable Driven, 102mm, 55 lb, Chevy, LS3, Kit

Part Number: FIF-73213

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 78012

Fuel Injection, Ultimate LS, Ultimate LS Kit LS3/L92 - 500HP w/ Trans Control, w/ coil pack set

Part Number: FIF-78012

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 71016

Fuel Injection System, Ultimate LS EFI, 500 HP, LS7, With Transmission Controller, With Inline Fuel Pump, Kit

Part Number: FIF-71016

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems with Force Fuel 75202

Fuel Injection System, Ultimate LS 500 HP, Multiport, Cathedral Port, Transmission Controller, Force Fuel, Kit

Part Number: FIF-75202

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems with Force Fuel 75212

Fuel Injection System, Ultimate LS, 500 HP, Multi-port, Rectangular Port Heads, Force Fuel, Transmission Controller, Force Fuel, Kit

Part Number: FIF-75212

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

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