Availability
Holley Parts and Accessories
Fuel Injection Systems, Terminator X, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Gold Chevy, 4.8-7.0L, Kit
Part Number: HLY-550-1022
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1021
Not Yet Reviewed
Estimated Ship Date: Feb 18, 2026
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, GM, LS2, LS3, LS7, Bosch O2, Kit
Part Number: HLY-550-607
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, Power Steering, Water Pump, AC, Pulleys, 6-groove, Natural Finish, Chevy, 4.8-7.0L, Kit
Part Number: HLY-20-190
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered 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: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Clockwise, Tensioner, SFI Damper, Black Finish, Chevy, 4.8-7.0L, Kit
Part Number: HLY-20-182BK
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 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: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 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: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
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: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Accessory Drive Systems, Gen III, Hemi, Mid-Mount System, Natural Finish, Serpentine, A/C, P/S, Water Pump, Hardware, Chrysler, Dodge, 5.7L, 6.2L, Kit
Part Number: HLY-20-290
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Manual Transmission Installation Kit, SBF Windsor, T5 Transmission Installation Kit, 50 Ounce, 10 Spine, 10.5 in. Clutch, Sold as a Kit
Part Number: HLY-319-603
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, A/C, Water Pump, Power Steering, SFI Damper, Polished Finish, Chevy, 4.8-6.2, Kit
Part Number: HLY-20-180P
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator X MAX, Up to 8-EV1 Injectors, 8-Coil, Plug-and-Play, Drive-by-Wire, Tuner/Trans Control, 4R70W, Ford, 5.0L, Kit
Part Number: HLY-550-1312
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator X MAX, Up to 8-EV6 Injectors, 8-Coils, Plug-and-Play, Drive-by-Wire, Tuner/Trans Control, 4R70W, Ford, 5.0, Kit
Part Number: HLY-550-1510
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coils, O2 Sensor, Drive-by-Wire, Plug-and-Play, Ford, 5.0L, Kit
Part Number: HLY-550-1412
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator X, Up to 8-EV1 Injectors, 8-Coils, Analog Input, O2 Sensor, Plug-and-Play, 3.5 in. Controller, Ford, 5.0L, Kit
Part Number: HLY-550-1212
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 5.0L, Kit
Part Number: HLY-550-619N
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator X, Up to 8-EV1 Injectors, 8-Coils, Analog Input, O2 Sensor, Plug-and-Play, 3.5 in. Controller, Ford, 5.0L, Kit
Part Number: HLY-550-1214
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator X, Up to 8-EV1 Injectors, 8-Coils, Analog Input, O2 Sensor, Plug-and-Play, 3.5 in. Controller, Ford, 5.0L, Kit
Part Number: HLY-550-1210
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator X MAX, Up to 8-EV6 Injectors, 8-Coil, Plug-and-Play, Drive-by-Wire, Tuner/Trans Control, 4R70W, Ford, 5.0L, Kit
Part Number: HLY-550-1315
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 5.0L, Kit
Part Number: HLY-550-625N
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2, Wideband, Ford, Lincoln, Mercury, 2-valve, 4.6L, 5.4L, Kit
Part Number: HLY-550-616N
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 4.6L, 5.4L, Kit
Part Number: HLY-550-617N
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Engine Management Systems, Terminator LS, Plug-andPlay, 8-Injectors, 8-Coils, Drive-by-Wire, with Controller, Chevy, Truck, 4.8-6.0L, 24x Crank, Kit
Part Number: HLY-550-615
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
Accessory Drive Systems, Mid-Mount, Gen III, Hemi, Non-VVT, Serpentine, 6-groove, Alternator, Power Steering, AC, Water Pump, Belts, Natural, Kit
Part Number: HLY-20-292
Not Yet Reviewed
Estimated Ship Date: Feb 18, 2026 if ordered today
Estimated Ship Date: Feb 18, 2026 if ordered today
Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Counterclockwise, Pulleys, 6-groove, Natural Finish, Chevy, 4.8-7.0L, Kit
Part Number: HLY-20-187
Not Yet Reviewed
Estimated Ship Date: Feb 20, 2026 if ordered today
Estimated Ship Date: Feb 20, 2026 if ordered today
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