Rebate
Rebate
|
#425550510BXD
Holley Sniper 550-510-BXD 4-barrel Self-Tuning EFI Conversion Kit
- Self-tuning EFI system for 4-barrel carburetors, designed for easy installation
- Includes a new optional Power Distribution Module (PDM) to simplify wiring
- Works within the Sniper Ecosystem, compatible with Hyperspark ignition, fuel systems, and multiple displays
$1,708.95
/kit
In Stock
$1,899.95
Save $191.00
Quantity
Need Help? Call to Order
Add to a list
Select a vehicle to verify Fitment
Select Vehicle
Product Summary
Universal Fit, Throttle Body Injection Style, Polished
- Self-tuning EFI system for 4-barrel carburetors, designed for easy installation
- Includes a new optional Power Distribution Module (PDM) to simplify wiring
- Works within the Sniper Ecosystem, compatible with Hyperspark ignition, fuel systems, and multiple displays
- Improved drivability with smooth cold starts, better fuel economy, and modernized performance
- User-friendly setup wizard requires no laptop, and it supports engines up to 650hp naturally aspirated or 575hp with boost
Rebates Available
See rebate detailsKey Specs
| Injection Style | Throttle Body |
| CFM | 800 CFM |
| Injector Size | 100 lb/hr @ 58.5 PSI |
| Max Horsepower Rating | 650 |
| ECM Included | Yes |
Need To Know
Need help?
855.313.9176Quick and Easy Returns
Return PolicyHolley Sniper 550-510-BXD Details
Holley Sniper 550-510-BXD Details
The Sniper 2 EFI is a self-tuning fuel injection system for 4-barrel carburetors, featuring easy installation, a new Power Distribution Module for simplified wiring, and compatibility with the Sniper Ecosystem, offering improved drivability, fuel economy, and modern convenience for classic vehicles.
- Self-tuning EFI system for 4-barrel carburetors, designed for easy installation
- Includes a new optional Power Distribution Module (PDM) to simplify wiring
- Works within the Sniper Ecosystem, compatible with Hyperspark ignition, fuel systems, and multiple displays
- Improved drivability with smooth cold starts, better fuel economy, and modernized performance
- User-friendly setup wizard requires no laptop, and it supports engines up to 650hp naturally aspirated or 575hp with boost
Rebates
Holley Fuel Up Spring Savings Event 2026

Save 10% instantly on select products across the Holley family of performance brands during the annual Holley Fuel Up Spring Savings Event 2026. Instant rebate period has been extended and now runs from March 30, 2026 through April 19, 2026.
CARB Warning
For use on pre-1966 vehicles only
CARB Warning
For use on pre-1966 vehicles only
Holley Sniper 550-510-BXD Specifications
Holley Sniper 550-510-BXD Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 550-510-BXD |
| Brand | Holley Sniper |
| Injection Style | Throttle Body |
| CFM | 800 CFM |
| Injector Size | 100 lb/hr @ 58.5 PSI |
| Max Horsepower Rating | 650 |
| ECM Included | Yes |
| GENERAL | |
| User Tunable | Yes |
| Self Tuning | Yes |
| Injectors Included | Yes |
| Intake Manifold Included | No |
| Metering Style | Speed density |
| EGR | No |
| Throttle Body Included | Yes |
| Throttle Body Material | Cast Aluminum |
| Throttle Body Finish | Polished |
| Throttle Body Flange Type | 4-Barrel Square Bore |
| Venturi Quantity | 4 |
| Fuel Pump Included | Yes |
| Calibration Module Included | Yes |
| Wiring Harness Included | Yes |
| Fuel Pressure Regulator Included | Yes |
| MAP Sensor Included | Yes |
| IAC Motor Included | Yes |
| IAT Sensor Included | Yes |
| TPS Sensor Included | Yes |
| Airflow Rate | 800 |
| Color | Polished |
| Throttle Body Style | Throttle Body Injection (TBI) |
| Throttle Body Barrels | 4-Barrel |
| Gaskets Included | No |
| Hardware Included | Yes |
| Flow Rating | 340 |
| Sold in Quantity | Kit |

