EFI Sniper 4150 Kit Black Finish

Options

$2,077.22
MSRP: $2,149.95
You save $72.73
Or

Trusted By Over 250,000+ Happy Customers Serving outdoor enthusiasts nationwide

Info

SKU:HLY550-877 ,UPC:

SKU: HLY550-877

UPC: 090127077979

MPN: 550-877

Info

SKU:
HLY550-877
UPC:
090127077979
MPN:
550-877

Description

The EFI Sniper 4150 Kit Black Finish from HOLLEY delivers professional-grade electronic fuel injection tuning hardware engineered for high-performance engine management in tactical and specialized applications. This complete kit addresses the needs of operators and technicians who require precision fuel system control in demanding environments where reliability and repeatability are non-negotiable. The Sniper platform represents decades of carbureted-to-EFI conversion expertise, purpose-built to eliminate guesswork from fuel delivery and ignition timing across variable operating conditions.

The EFI Sniper 4150 Kit features a black-finished aluminum body constructed to withstand harsh field conditions while maintaining consistent thermal performance. This system integrates a dedicated ECU, wiring harness, and fuel system sensors into a unified platform that automatically compensates for altitude, air temperature, and load variations—critical factors in mobile or remote operations where manual jetting or mixture adjustment is impractical. The 4150-class throttle body design delivers the airflow capacity required for high-displacement engines while the integrated fuel management system ensures cold-start reliability and seamless acceleration across the operating envelope.

Operators utilizing vintage or modified powerplants—including classic military-spec engines or custom-built platforms—benefit from the Sniper kit's plug-and-play installation and real-time diagnostics. The black finish resists corrosion in salt, dust, and high-humidity environments typical of field deployment. Technicians gain access to comprehensive tuning software that allows performance mapping without specialized dyno equipment, making this kit ideal for rapid integration into mobile command vehicles, backup power systems, or specialized tactical support equipment requiring robust fuel system architecture.

SpecificationDetail
Brand
HOLLEY
MPN / Part Number
550-877
UPC
090127077979
SKU
HLY550-877
Weight
13.03 lbs
Dimensions
12.85 x 9.45 x 14.55 in
System Type
Electronic Fuel Injection Kit
Throttle Body Class
4150
Finish
Black Powder Coat
Primary Material
Aluminum Alloy
Includes
ECU, Wiring Harness, Sensors
Key Features
Auto Compensation, Real-Time Tuning, Cold-Start Reliability

WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.