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Holley 550-858 Sniper EFI BBD Carburetor in Chrome for 71-86 CJ Jeep Vehicles with 258c.i. 6cyl

Quadratec Part #: 51317.1000
Holley Part #: 550-858
Holley has designed the perfect solution for those struggling with the old BBD carburetor on their Jeep. The new Sniper EFI BBD for Jeep CJ's will be the sensible compliment to any 258ci powered Jeep vehicle. Not only does the Sniper EFI BBD offer exceptional throttle response and outstanding power gains over the carburetor, but you can also gain timing management. Put an end to cold start issues, hesitations, vapor lock, and flooding. You can now have all the benefits of EFI by upgrading to this Holley Sniper system and get the economical pricing and performance that all Jeep enthusiast desire today.

CARB Notice

  • Legal in California, or other states adopting California emissions standards, only for racing vehicles that may never be used, registered or licensed for use, upon a highway. Can not be shipped to California residents.

Precision Fitment: Engineered specifically for 1971-1986 Jeep CJ’s with 258ci 6 Cylinder Engines. Bolt on BBD Carburetor Replacement (in Chrome) makes installation smooth and accurate. There are Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM).

Power Rating: This unit will Supports up to 350HP with Two 100lb/hr Injectors.

Cohesive Components: Throttle body mounted ECU means no extra boxes to mount and an Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI).

EFI Tuning: Self tuning unit with simple calibration by answering a few questions about your engine which will create a base map, then will start tuning on it's own. Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!

Included Kits: Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange.

Installation Notes
Installation Difficulty:
Level 3Advanced
Installation Time: 1-2 hours
Parts Included
  • Bolt on Chrome BBD Carburetor
  • Full Color EFI Touchscreen
  • OEM Style TPS/IAC and Fuel Pressure regulator
  • Bosch LSU 4.9 Wideband Oxygen Sensor
  • oxygen sensor kit and all Hardware for installation
90 day Limited Warranty
  • Engine Size: 4.2L 258ci I-6
  • Engine Fuel: Gasoline
  • Shipping Weight: 9lb
  • Shipping Dimensions: 12in x 11in x 8in (L x W x H)
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