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Accessories + Misc.

Injectors

Replacement and high-flow performance injectors. Gasoline and diesel.
Ref 550-511-3AX Holley
Brand

Holley Sniper 2 EFI - Black

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-511-3AX.

Ref: 550-511-3AX

Available from the manufacturer (4) → Nov 20, 2026
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Ref 550-511-3XR Holley
Brand

Holley Sniper 2 EFI - Black

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-511-3XR.

Ref: 550-511-3XR

Available from the manufacturer (1) → Nov 20, 2026
Create a trade account to see the price
Ref 550-511-3XK Holley
Brand

Holley Sniper 2 EFI - Black

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-511-3XK.

Ref: 550-511-3XK

Added to the next production schedule
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Ref 550-511-3XD Holley
Brand

Holley Sniper 2 EFI - Black

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-511-3XD.

Ref: 550-511-3XD

Temporarily unavailable
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Ref 550-511-3PX Holley
Brand

Holley Sniper 2 EFI - Black

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-511-3PX.

Ref: 550-511-3PX

Available from the manufacturer (24+) → Nov 20, 2026
Create a trade account to see the price
Ref 550-511-3PK Holley
Brand

Holley Sniper 2 EFI - Black

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-511-3PK.

Ref: 550-511-3PK

Available from the manufacturer (24+) → Nov 20, 2026
Create a trade account to see the price
Ref 550-511-3XX Holley
Brand

Holley Sniper 2 EFI - Black

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-511-3XX.

Ref: 550-511-3XX

Added to the next production schedule
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Ref 550-510-BXX Holley
Brand

Holley Sniper 2 EFI - Polished

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-510-BXX.

Ref: 550-510-BXX

Added to the next production schedule
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Ref 550-510-BXR Holley
Brand

Holley Sniper 2 EFI - Polished

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-510-BXR.

Ref: 550-510-BXR

Available from the manufacturer (2) → Nov 20, 2026
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Holley Sniper 2 EFI - Polished
Ref 550-510-BXK Holley
Brand

Holley Sniper 2 EFI - Polished

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-510-BXK.

Ref: 550-510-BXK

Available from the manufacturer (1) → Nov 20, 2026
Create a trade account to see the price
Ref 550-510-BXD Holley
Brand

Holley Sniper 2 EFI - Polished

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-510-BXD.

Ref: 550-510-BXD

Available from the manufacturer (2) → Nov 20, 2026
Create a trade account to see the price
Ref 550-510-BPX Holley
Brand

Holley Sniper 2 EFI - Polished

Conversion kit to replace a carburetor fuel supply with Holley Sniper EFI electronic fuel injection. Fuel pressure : 4 bar (58.5 psi); Inlet/outlet ports : 9/16-18 female O-ring (AN6); Flange : 4150. Manufacturer part number: 550-510-BPX.

Ref: 550-510-BPX

Available from the manufacturer (24+) → Nov 20, 2026
Create a trade account to see the price