- Fuel Injection Systems
- Holley Sniper 2 EFI Throttle Body Conversion Kits
Reliable, Powerful, and Easy-to-Install Throttle Body EFI Conversions
The Holley Sniper 2 EFI Conversion System has 14 updated features over previous kits and is easier to install, more reliable, and modernized to deliver power, efficiency, and self-tuning! Each throttle body system features a 4-barrel 4150 flange-style base, four injectors, and a four-wire connection.
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Injection Style
Power Adder Compatible
Inlet Size
IAC Motor Included
TPS Sensor Included
Airflow Rate cfm
Throttle Body Finish
PRICE
EFI Systems
$1,169.95
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
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$1,169.95
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
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Holley 550-511-BXK
Holley 550-511-BXK Sniper 2 EFI Bluetooth Master Kit w/Inline Fuel Pump Master Kit [Black]
$1,569.95
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Holley 550-510-BXK
Holley 550-510-BXK Sniper 2 EFI Bluetooth Master Kit w/Inline Fuel Pump Master Kit [Polished]
$1,569.95
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Holley 550-511-3XX1
Holley 550-511-3XX Sniper 2 EFI Conversion Kit for Chevy Small & Big Block Engines [Black]
$1,899.03
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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$1,899.03
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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Holley 550-510-3XX1
Holley 550-510-3XX Sniper 2 EFI Conversion Kit for Chevy Small & Big Block Engines [Shiny]
$1,896.33
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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$1,896.33
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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Holley 550-510-3XX2
Holley 550-510-3XX Sniper 2 Throttle Body EFI & Adapter Harness Conversion Kit [Shiny]
$1,219.91
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Holley 550-510-3AX
Holley 550-510-3AX Sniper 2 EFI Throttle Body & Adapter Harness Upgrade Kit w/o Fuel System Kit [Shiny]
$1,099.95
$989.96
SAVE $109.99
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Holley 550-510-3AE
Holley 550-510-3AE Sniper 2 EFI Throttle Body & Adapter Harness Upgrade Kit w/Fuel System Kit [Shiny]
$1,199.95
$1,079.96
SAVE $119.99
Estimated to ship direct from manufacturer in 24hrs
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Holley 550-511-3PX
Holley 550-511-3PX Sniper 2 EFI Conversion w/Power Distribution Module (PDM) [Black]
$1,449.95
$1,304.96
SAVE $144.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
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$1,449.95
$1,304.96
SAVE $144.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
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Holley 550-510-3PX
Holley 550-510-3PX Sniper 2 EFI Conversion w/Power Distribution Module (PDM) [Shiny]
$1,449.95
$1,304.96
SAVE $144.99
Estimated to ship direct from manufacturer in 24hrs
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Holley 550-511-3XK
Holley 550-511-3XK Sniper 2 EFI Conversion Kit w/Inline Fuel Pump Master Kit [Black]
$1,699.95
$1,529.96
SAVE $169.99
Estimated to ship direct from manufacturer in 24hrs
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Holley 550-511-3XK1
Holley 550-511-3XK Sniper 2 EFI Conversion Kit w/Inline Fuel Pump Master Kit for Chevy Small & Big Block Engines [Black]
$2,259.03
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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$2,259.03
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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Holley 550-510-3XK
Holley 550-510-3XK Sniper 2 EFI Conversion Kit w/Inline Fuel Pump Master Kit [Shiny]
$1,699.95
$1,529.96
SAVE $169.99
Ships Today
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Holley 550-511-3AX
Holley 550-511-3AX Sniper 2 EFI Throttle Body & Adapter Harness Upgrade Kit w/o Fuel System Kit [Black]
$1,099.95
$989.96
SAVE $109.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
FREE Shipping
Lowest Price Guarantee
$1,099.95
$989.96
SAVE $109.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
FREE Shipping
Lowest Price Guarantee
Holley 550-511-3AE
Holley 550-511-3AE Sniper 2 EFI Throttle Body & Adapter Harness Upgrade Kit w/Fuel System Kit [Black]
$1,199.95
$1,079.96
SAVE $119.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
FREE Shipping
Lowest Price Guarantee
$1,199.95
$1,079.96
SAVE $119.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
FREE Shipping
Lowest Price Guarantee
Holley 550-510-3XK1
Holley 550-510-3XK Sniper 2 EFI Conversion Kit w/Inline Fuel Pump Master Kit for Chevy Small & Big Block Engines [Shiny]
$2,256.33
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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$2,256.33
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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Holley 550-511-3XX2
Holley 550-511-3XX Sniper 2 Throttle Body EFI & Adapter Harness Conversion Kit [Black]
$1,219.91
Ships Today
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Holley 550-511-3PK
Holley 550-511-3PK Sniper 2 EFI Conversion w/Power Distribution Module (PDM) & Inline Fuel Pump Master Kit [Black]
$1,849.95
$1,664.96
SAVE $184.99
Ships Today
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Holley 550-510-3PK
Holley 550-510-3PK Sniper 2 EFI Conversion w/Power Distribution Module (PDM) & Inline Fuel Pump Master Kit [Shiny]
$1,849.95
$1,664.96
SAVE $184.99
Ships Today
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Holley 550-511-3XR
Holley 550-511-3XR Sniper 2 EFI Conversion w/Return-Style Drop-In Fuel Pump Module [Black]
$1,849.95
$1,664.96
SAVE $184.99
Estimated to ship direct from manufacturer on 05/30/24, pending manufacturer availability.
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$1,849.95
$1,664.96
SAVE $184.99
Estimated to ship direct from manufacturer on 05/30/24, pending manufacturer availability.
FREE Shipping
Lowest Price Guarantee
Holley 550-510-3XR
Holley 550-510-3XR Sniper 2 EFI Conversion w/Return-Style Drop-In Fuel Pump Module [Shiny]
$1,849.95
$1,664.96
SAVE $184.99
Estimated to ship direct from manufacturer on 05/30/24, pending manufacturer availability.
FREE Shipping
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$1,849.95
$1,664.96
SAVE $184.99
Estimated to ship direct from manufacturer on 05/30/24, pending manufacturer availability.
FREE Shipping
Lowest Price Guarantee
Holley 550-511-3XD
Holley 550-511-3XD Sniper 2 EFI Conversion w/Returnless Drop-In Fuel Pump Module [Black]
$1,849.95
$1,664.96
SAVE $184.99
Ships Today
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Holley 550-510-3XD
Holley 550-510-3XD Sniper 2 EFI Conversion w/Returnless Drop-In Fuel Pump Module [Shiny]
$1,849.95
$1,664.96
SAVE $184.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
FREE Shipping
Lowest Price Guarantee
$1,849.95
$1,664.96
SAVE $184.99
Estimated to ship direct from manufacturer on 05/24/24, pending manufacturer availability.
FREE Shipping
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Bluetooth Module
$199.95
$179.96
SAVE $19.99
Estimated to ship direct from manufacturer on 06/03/24, pending manufacturer availability.
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$199.95
$179.96
SAVE $19.99
Estimated to ship direct from manufacturer on 06/03/24, pending manufacturer availability.
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Wiring Harnesses
Holley 558-329
Holley 558-329 Tachometer Input Ignition Adapter for Sniper 2 EFI Conversions w/CD Ignition
$24.95
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3.5 in. Touchscreens
Holley 553-202 LCD Handheld Controller Interface w/3.50 in. Touch Screen for Sniper 2 EFI Conversion
Holley 553-202
Holley 553-202 LCD Handheld Controller Interface w/3.50 in. Touch Screen for Sniper 2 EFI Conversion
$249.95
Availability Date Unknown
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Power Distribution
$149.95
$134.96
SAVE $14.99
Estimated to ship direct from manufacturer on 05/28/24, pending manufacturer availability.
Lowest Price Guarantee
$149.95
$134.96
SAVE $14.99
Estimated to ship direct from manufacturer on 05/28/24, pending manufacturer availability.
Lowest Price Guarantee