Availability
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: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
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: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
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: Today
Estimated Ship Date: Today
Engine Management Systems, Terminator X MAX, Universal, 8-EV1 Injectors, 8-Coils, GM Drive-by-Wire, GM Trans Harness, Domestic, Pushrod Engine, Kit
Part Number: HLY-550-959
Not Yet Reviewed
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, Universal, Un-terminated, Kit
Part Number: HLY-550-605N
Not Yet Reviewed
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, Un-terminated, Kit
Part Number: HLY-550-605
Not Yet Reviewed
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, CANBUS, Universal, MPFI, Kit
Part Number: HLY-550-604N
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Return Style Pump, PDM, 3.5 in. Display, Kit
Part Number: SNE-550-511-3PR
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Return Style Pump, PDM, 5 in. Display, Kit
Part Number: SNE-550-511-5PR
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, Returnless Pump, PDM, 3.5 in. Display, Kit
Part Number: SNE-550-510-3PD
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Returnless Pump, PDM, 5 in. Display, Kit
Part Number: SNE-550-511-5PD
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Returnless Pump, PDM, 3.5 in. Display, Kit
Part Number: SNE-550-511-3PD
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, GM Type 2, Kit
Part Number: HLY-20-162BK
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, Return Style Pump, PDM, 3.5 in. Display, Kit
Part Number: SNE-550-510-3PR
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, GM Type 2, 130 Amp Alternator, Natural, Kit
Part Number: HLY-20-136
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Fuel Injection Systems, Terminator X, Stealth 4500, 2x4 EFI, Eight Injector, Dual Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit
Part Number: HLY-550-1081
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Returnless Pump, 5 in. Display, Kit
Part Number: SNE-550-511-5XD
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Accessory Drive Systems, LS Engine Swap, Serpentine Style, Alternator, Power Steering, Pullies, 6-groove, Black Finish, Chevy, LS, 4.8-7.0L, Kit
Part Number: HLY-20-156BK
Not Yet Reviewed
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Sanden 7B10 A/C Only, Black Powdercoated, Chevy, GMC, V8, Kit
Part Number: HLY-20-138BK
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, Kit
Part Number: HLY-20-162P
Not Yet Reviewed
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Return Style Pump, 5 in. Display, Kit
Part Number: SNE-550-511-5XR
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, GM Type 2, 130 Amp Alternator, Black, Kit
Part Number: HLY-20-136BK
Not Yet Reviewed
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Sanden 508 A/C Only, Polished, Chevy, GMC, V8, Kit
Part Number: HLY-20-137P
Estimated Ship Date: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
Digital Dashboard Displays, Holley EFI, 12.3 in. Digital Pro Dash, Standalone, Touch Screen, Aluminum Case, Built-in GPS, Odometer, Data Logger, Kit
Part Number: HLY-553-116
Estimated Ship Date: Today
Estimated Ship Date: Today
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