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Holley EFI 550-850K Sniper EFI Self-Tuning Master Kit

7135919 - 550-850K

2300 Flange Carb Replacement/Handheld Monitor/EFI Hose/Fuel Pump/Post And Pre Fuel Filters/Return Bulkhead/Hardware - Black Ceramic Finish

550-850K Sniper EFI Self-Tuning Master Kit Holley EFI

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Pricing: $1,206.95


Holley EFI - Sniper EFI Self-Tuning Master Kit - Part#: 550-850K Features:

  • Bolt On 2300 Flange Carb Replacement
  • Supports Up To 350 Hp
  • Only 4 Wiring Connections Required
  • Internal Fuel Pressure Regulator
  • High Resolution Full Color Touchscreen Display
  • Simple Calibration Wizard No Laptop Required
  • Includes Clamp On O2 Sensor Kit
  • Sniper Software Free To Download
  • Printable Throttle Body Flange Template Included

View the Full List of Automotive Applications »

Below is an abbreviated list of applications for the Sniper EFI Self-Tuning Master Kit.


Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley's EFI throttle body powers every NASCAR Sprint Cup Series(TM) team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All Star race. But that's not all. The world's best street machine builders and tuners are making the switch to Holley EFI. Builders like Dave Lane who used Holley EFI to power the 2013 Goodguys Hot Rod of the Year and tuners like Steve Morris who use it to build some of the baddest forced induction beasts on the planet. It's the easiest, most refined, feature-rich system that money can buy. But, don't take our word for it, see what the best are saying about Holley EFI!


  • 7135919 - 550-850K
  • 7135919
  • 550-850K
  • 090127021293
  • Holley EFI
  • New

Shipping Information

  • Item Requires Shipping
  • 20.0 lbs.
  • W14.5000” x H9.5000” x L25.5000”

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