Availability
Nitrous Controller Components, Solenoid Driver, High Current, Up to 40 amp Draw, Each
Part Number: HLY-554-111
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Boost Controllers, Holley EFI, Dual Solenoid Valve, Billet Aluminum, 3 Port Manifold, 1/4 in. NPT, Push-lock Fittings, Two Trminated Connectors, Each
Part Number: HLY-557-201
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Injection System Controllers, Water/Methanol Injection, Driver Module, 2-channel, with Wire Harness, for HP EFI or Dominator EFI, Each
Part Number: HLY-554-115
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection System Components, Terminator X, Upgrade, 3.5 in. Touch Screen, Handheld Controller, Mounting Sleeve, Power Cord, Wire Harness, Each
Part Number: HLY-553-201
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Controllers, Sniper 2 EFI, 3.5 in. LCD, Touch Screen, for Sniper 2 EFI Systems, Tuning Options, Basic and Advanced, Mount, Harness, SD Card, Each
Part Number: SNE-553-202
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Brackets, Steel, Gold Iridited, Carburetor Cable Mount, Holley, 4010/4150/4160, Each
Part Number: HLY-45-456
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection Systems, Terminator X Max, Stealth 4150 EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Black, Tunable, Trans Control, Kit
Part Number: HLY-550-1012
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Idle Air Valve, IAC, Replacement, Steel, Zinc, Sniper EFI, Holley EFI, Each
Part Number: HLY-543-34
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Idle Air Control, Motor, for Commander 950, Digital Pro-Jection 2-/4-Bbl, Holley Sniper EFI TBI/HP 4-Bbl, Terminator/Avenger Black 4-Bbl, Plastic,Each
Part Number: HLY-543-105
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Boost Controllers, Holley EFI, Solenoid Valve, 3 Port, 1/8 in. NPT, 2-pin ECU Pigtail, 3/16 in. Barb Fittings, 1/8 in. NPT Plug, Spare ECU Pin, Each
Part Number: HLY-557-200
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Black, Trans Control, Chevy, 4.8-7.0L, Kit
Part Number: HLY-550-1029
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection Systems, Terminator X Max, Stealth 4150 EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Gold, Tunable, Trans Control, Kit
Part Number: HLY-550-1013
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection Systems, Terminator X Max, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Aluminum, Gold, Trans Control, Chevy, 4.8-7.0L, Kit
Part Number: HLY-550-1065
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Wiring Harnesses, Holley EFI, HEI Distributor, Adapter Harness, Small Cap, Computer Controlled, for Avenger, HP, Dominator EFI Systems, Each
Part Number: HLY-558-304
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Shiny, Trans Control, Chevy, 4.8-7.0L, Kit
Part Number: HLY-550-1028
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Wiring Harnesses, Holley EFI, Gen III Hemi, Throttle Position, Idle Air Controls, Factory Connectors, Chrysler, Dodge, Jeep, Hemi, Late Model, Each
Part Number: HLY-558-116
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Carburetor Gaskets, Fuel Bowl, Primary, Buna Rubber, Blue, Non-Stick, Model 4165, 4175, No Computer Controlled, Pair
Part Number: HLY-108-92-2
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Plugs, Sniper EFI, Idle Air Control Plug, O-ring Included, for Dual 4 Barrel, Sniper EFI Engines, Each
Part Number: SNE-543-123
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
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
Estimated Ship Date: Apr 8, 2026 if ordered today
Estimated Ship Date: Apr 8, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1063
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026
Throttle Lever Studs, 1.25 in. Length, Throttle/Cruise Control, Universal, Each
Part Number: HLY-20-64
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection Systems, Terminator X Max, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Aluminum, Shiny, Trans Control, Chevy, 4.8-7.0L, Kit
Part Number: HLY-550-1063
Not Yet Reviewed
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Pumps, VR1 Series, Electric, In-tank, 335 gph, 1,268 lph, 130 psi, 12V, -10 AN Outlet, Female O-ring, 2-Step Fuel Controller, Harness, Each
Part Number: HLY-12-767
Not Yet Reviewed
Estimated Ship Date: Apr 8, 2026 if ordered today
Estimated Ship Date: Apr 8, 2026 if ordered today
Choke Cables, Steel, Manual, 6 ft. Length, Each
Part Number: HLY-45-228
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Fuel Injection System, Sniper 2, Self-Tuning, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, No Pump, 3.5 in. Display, Kit
Part Number: SNE-550-510-3XX
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Brackets, Steel, Gray, Choke Cable Mount, Underdash, Each
Part Number: HLY-45-229
Estimated Ship Date: Monday 3/23/2026 if shipped by air
Estimated Ship Date: Monday 3/23/2026 if shipped by air
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