Holley Sniper 550-858K Master EFI 1971-86 Jeep CJ 258 6 cylinder Fuel Injection
SKU: 51491557187

Holley Sniper 550-858K Master EFI 1971-86 Jeep CJ 258 6 cylinder Fuel Injection

Sale price$809.98 Regular price$899.98
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Description

Holley Sniper 550-858K Master EFI 1971-86 Jeep CJ 258 6 cylinder Fuel InjectionOverview: Introducing the Sniper EFI BBD Master Kit, for Jeep CJ's! The Sniper EFI BBD will be right at home on any 258ci powered trail rig, or weekend cruiser. Not only does the Sniper EFI BBD offer superior throttle response and WOT power over the carburetor, but you can also gain timing control! Put an end to cold start issues, hesitations, vapor lock, and flooding. Upgrade to Sniper EFI and get the tactical accuracy of EFI today! This master kit

Overview:

Introducing the Sniper EFI BBD Master Kit, for Jeep CJ's! The Sniper EFI BBD will be right at home on any 258ci powered trail rig, or weekend cruiser. Not only does the Sniper EFI BBD offer superior throttle response and WOT power over the carburetor, but you can also gain timing control! Put an end to cold start issues, hesitations, vapor lock, and flooding. Upgrade to Sniper EFI and get the tactical accuracy of EFI today! This master kit includes 20" of fuel hose, two filters, one high pressure EFI fuel pump, and all of the required fittings for a complete EFI fuel system conversion!

Features:

  • Bolt on BBD Carburetor Replacement
  • Engineered specifically for 1971-1986 Jeep CJ's with 258ci 6 Cylinder Engines
  • Throttle body mounted ECU - no extra boxes to mount
  • Supports up to 350HP with Two 100lb/hr Injectors
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
  • Includes complete fuel system consisting of; 20ft of 3/8" Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
  • Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
  • Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
  • OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.
  • 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

 

Application:

Year Make Model Submodel Engine Size
1979 - 1986 Jeep CJ7 258/4.2L L6
1981 - 1985 Jeep Scrambler 258/4.2L L6
1979 - 1983 Jeep CJ5 258/4.2L L6

 

Specs:

Brand Holley Sniper EFI
Emission Code 3
Finish Shiny
Fuel Pressure 58.5 PSI
Injector Size 100 lb/hr @ 58.5 PSI
Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6)
Product Type BBD EFI
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51491557187

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Betsy N
Belleville, US
★★★★★ 5
Good Buy - 4 USB Ports (USB C) Hurray! - Fits Well In Cable Management Box - Long Flat (!!!) Cord
Size: 10 Ft, Color: White
Good Product. I have 16 x 6 x 5 cable management boxes. This is the first power strip that I have found with 4 USB ports with USB C. Because it is a single row of outlets, the power supplies for 2 laptops fit in the box. I have those, a lamp, phone, and iPAD, with 1 extra USB and 1 USB C cord plugged in. The low profile inside the larger ventilated box keeps things from overheating. It has taken a bit of adjusting to get everybody in the right place but it works great. The flat cable is smart. It fits under the corner of the rug without leaving a bump.
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Reviewed in the United States on October 15, 2023
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David Srein
Waukegan, US
★★★★★ 5
Great for Any Inside Area
Size: 10 Ft, Color: White
I bought two of these these for my office at work and the power is unstable and there are not many outlets (work for the schools) and the building is old - built in 1977. These have done the trick and I have had no issues with my electronics.
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Reviewed in the United States on April 21, 2026
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Verified Purchase
Jedrek Sanford
New York, US
★★★★★ 5
Perfect for my home office!
Size: 10 Ft, Color: Black
This 10 ft power strip has been a game changer for my home office. The cord is super long, which makes it easy to run along the wall or under furniture without any weird stretching. I really like the flat plug—it fits snugly behind my desk and doesn’t take up space like bulky ones do. The 7 outlets are spaced well so I can actually use all of them without the plugs getting in each other’s way. The 4 USB ports (especially the 2 USB-C ones) are super handy for charging my phone, tablet, and earbuds without needing extra adapters. Everything charges quickly, and it feels solid and well-made. I also like knowing it has surge protection built in, especially with how many electronics I have plugged in. Definitely recommend this if you want something that’s sleek, efficient, and built to handle a modern setup.
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Reviewed in the United States on May 7, 2025
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Marc In NY
Chelsea, US
★★★★★ 5
Great product!
Size: 10 Ft, Color: White
Works great!
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Reviewed in the United States on March 17, 2026
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will
Fort Morgan, US
★★★★★ 4
Good purchase
Size: 6 FT, Color: White
I appreciate the flat plug a lot. I'm giving 4 stars because I've if the USB ports does not work.
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Reviewed in the United States on October 23, 2025

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