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Sniper EFI
Sniper EFI UK – Electronic Fuel Injection Conversion Systems Sniper EFI, a division of Holley, brings modern fuel injection technology to classic carburetted engines. Designed for easy installation and reliable performance, Sniper EFI systems are one of the most popular...
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Holley Sniper EFI 553-115
SNIPER EFI 3.5 TOUCH SCREEN LCD - Sniper EFI 3.5" Handheld Controller
Only compatible with Sniper EFI systems.
Part TypeDriver Information Display£409.99£389.99 inc VAT£324.99 ex VAT -
Holley Sniper EFI 551-103
TRANS CONTROLLER, SNIPER 2 - Sniper 2 Transmission Control Kit
MAP sensor is needed if using MAP for...
Part TypeAutomatic Transmission Control Module£613.99£526.00 inc VAT£438.33 ex VAT -
Holley Sniper EFI 551-101
TRANS CONTROLLER, CAN BUS CONNECTED - Sniper 1 Transmission Control Kit
Requires Sniper Version 2 ECU and up to...
Part TypeAutomatic Transmission Control Module£629.99£547.99 inc VAT£456.66 ex VAT -
Holley Sniper EFI 551-100
TRANSMISSION CONTROLLER, SERVICE UNIT - Sniper Transmission Controller - Service Unit
Replacement/service unit only, handheld is not included but...
Part TypeAutomatic Transmission Control Module£523.99£403.99 inc VAT£336.66 ex VAT -
Holley Sniper EFI 550-877
SUPER SNIPER STEALTH 4150 8-INJ, BLACK - Holley Sniper EFI Super Sniper Stealth 1250 - Black
Part # 534-247 is required to complete installation.
Part TypeFuel Injection Conversion Kit£2,199.98£2,032.00 inc VAT£1,693.33 ex VAT -
Holley Sniper EFI 550-872k
SNIPER STEALTH 4150 MASTER KIT, GOLD - Holley Sniper Stealth 4150 Master Kit - Classic Gold
Part # 534-247 is required to complete installation.
Part TypeFuel Injection Conversion Kit£1,892.99£1,760.99 inc VAT£1,467.49 ex VAT -
Holley Sniper EFI 550-872
SNIPER STEALTH 4150 - GOLD - Holley Sniper Stealth 4150 - Classic Gold
Part # 534-247 is required to complete installation.
Part TypeFuel Injection Conversion Kit£1,585.99£1,489.99 inc VAT£1,241.66 ex VAT -
Holley Sniper EFI 550-871k
SNIPER STEALTH 4150 MASTER KIT, BLACK - Holley Sniper Stealth 4150 Master Kit - Black
Part # 534-247 is required to complete installation.
Part TypeFuel Injection Conversion Kit£1,892.99£1,760.99 inc VAT£1,467.49 ex VAT -
Holley Sniper EFI 550-871
SNIPER STEALTH 4150 - BLACK - Holley Sniper Stealth 4150 - Black
Part # 534-247 is required to complete installation.
Part TypeFuel Injection Conversion Kit£1,585.99£1,489.99 inc VAT£1,241.66 ex VAT -
Holley Sniper EFI 550-870k
SNIPER STEALTH 4150 MASTER KIT, POLISHED - Holley Sniper Stealth 4150 Master Kit - Shiny
Part # 534-247 is required to complete installation.
Part TypeFuel Injection Conversion Kit£1,840.99£1,715.99 inc VAT£1,429.99 ex VAT -
Holley Sniper EFI 550-870
SNIPER STEALTH 4150 - SHINY - Holley Sniper Stealth 4150 - Shiny
Part # 534-247 is required to complete installation.
Part TypeFuel Injection Conversion Kit£1,534.99£1,444.99 inc VAT£1,204.16 ex VAT -
Holley Sniper EFI 550-869k
SNIPER QUADRAJET, GOLD, MASTER KIT - Holley Sniper EFI Quadrajet™ Master Kit - Classic Gold
Installing in a marine setup? Go with Holley...
Part TypeFuel Injection Conversion Kit£2,045.99£1,897.00 inc VAT£1,580.83 ex VAT -
Holley Sniper EFI 550-869
SNIPER QUADRAJET, GOLD - Holley Sniper EFI Quadrajet™ - Classic Gold
For marine installations, a flame arrestor is legally...
Part TypeFuel Injection Conversion Kit£1,739.99£1,625.99 inc VAT£1,354.99 ex VAT -
Holley Sniper EFI 550-866
SNIPER 2GC SMALL BORE, GOLD - Holley Sniper EFI 2GC Small Bore - Classic Gold
Sniper EFI Conversion kit for 1955 to 1969...
Part TypeFuel Injection Conversion Kit£1,483.99£1,354.99 inc VAT£1,129.16 ex VAT -
Holley Sniper EFI 550-858k
SNIPER BBD, POLISHED, MASTER KIT - Holley Sniper EFI BBD Master Kit for 1971-1986 Jeep CJ - Shiny
Not compatible with kick down operated transmissions.
Part TypeFuel Injection Conversion Kit£1,739.99£1,625.99 inc VAT£1,354.99 ex VAT -
Holley Sniper EFI 550-858
SNIPER BBD, POLISHED - Holley Sniper EFI BBD for 1971-1986 Jeep CJ - Shiny
Not compatible with kick down operated transmissions.
Part TypeFuel Injection Conversion Kit£1,432.00£1,309.99 inc VAT£1,091.66 ex VAT -
Holley Sniper EFI 550-857
SNIPER 2GC LARGE BORE, GOLD - Holley Sniper EFI 2GC Large Bore - Classic Gold
Sniper EFI Conversion kit for 1974-1978 Chevrolet, GMC,...
Part TypeFuel Injection Conversion Kit£1,381.00£1,264.99 inc VAT£1,054.16 ex VAT -
Holley Sniper EFI 550-850k
SNIPER 2300 MASTER KIT, BLACK - Holley Sniper EFI 2300 Master Kit - Black
Ford transmissions may require Holley P/N 20-60 Ford...
Part TypeFuel Injection Conversion Kit£1,636.99£1,534.99 inc VAT£1,279.16 ex VAT -
Holley Sniper EFI 550-850
2300 SELF-TUNING KIT - BLACK CERAMIC FIN - Holley Sniper EFI 2300 - Black
Ford transmissions may require Holley P/N 20-60 Ford...
Part TypeFuel Injection Conversion Kit£1,330.00£1,219.00 inc VAT£1,015.83 ex VAT -
Holley Sniper EFI 550-849k
SNIPER 2300 MASTER KIT, POLISHED - Holley Sniper EFI 2300 Master Kit - Shiny
Ford transmissions may require Holley P/N 20-60 Ford...
Part TypeFuel Injection Conversion Kit£1,585.99£1,489.99 inc VAT£1,241.66 ex VAT -
Holley Sniper EFI 550-849
SNIPER 2300, POLISHED - Holley Sniper EFI 2300 - Polished
Ford transmissions may require Holley P/N 20-60 Ford...
Part TypeFuel Injection Conversion Kit£1,258.99£1,174.00 inc VAT£978.33 ex VAT -
Holley Sniper EFI 550-841
SNIPER STEALTH 4500 8-INJ, POLSIHED - Holley Sniper EFI Stealth 4500 - Polished
Not to be used on engines producing 800...
Part TypeFuel Injection Conversion Kit£2,249.99£2,076.98 inc VAT£1,730.82 ex VAT -
Holley Sniper EFI 550-511-bxx
SNIPER 2 BLE KIT, BLACK - Holley Sniper 2 EFI - Black
Nitrous Control Not Supported In Sniper 2 EFI...
Part TypeFuel Injection Conversion Kit£1,330.00£1,219.00 inc VAT£1,015.83 ex VAT -
Holley Sniper EFI 550-511-bxr
SNIPER 2 BLE RETURN KIT, BLACK - Holley Sniper 2 EFI - Black
Nitrous Control Not Supported In Sniper 2 EFI...
Part TypeFuel Injection Conversion Kit£1,943.99£1,805.99 inc VAT£1,504.99 ex VAT -
Holley Sniper EFI 550-511-bxk
SNIPER 2 BLE MASTER KIT, BLACK - Holley Sniper 2 EFI - Black
Nitrous Control Not Supported In Sniper 2 EFI...
Part TypeFuel Injection Conversion Kit£1,739.99£1,625.99 inc VAT£1,354.99 ex VAT
Sniper EFI UK – Electronic Fuel Injection Conversion Systems
Sniper EFI, a division of Holley, brings modern fuel injection technology to classic carburetted engines. Designed for easy installation and reliable performance, Sniper EFI systems are one of the most popular upgrades for hot rods, muscle cars, and classic vehicles looking for improved drivability and efficiency.
Why Sniper EFI?
- Carburetor Replacement: Bolts in place of a 4-barrel carb for modern EFI reliability.
- Self-Tuning Technology: Learns and adapts to your engine as you drive.
- Improved Performance: Better cold starts, throttle response, and fuel efficiency.
Popular Sniper EFI Products
- Sniper 4150 EFI Conversion Kits
- Sniper Stealth EFI Systems
- Sniper EFI Fuel Pumps & Regulators
- Complete EFI Master Kits
Sniper EFI in the UK
Billy’s Speed Shop brings Sniper EFI kits to the UK, helping enthusiasts modernise their classic builds without losing vintage character. Whether you’re running a small-block Chevy, a Ford V8, or a custom engine, Sniper EFI offers the perfect balance of heritage and technology.
Upgrade your fuelling with Sniper EFI UK systems – available today at Billy’s Speed Shop.



