SKU: 95119356079

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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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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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: 95119356079

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D S
Charlottesville, US
★★★★★ 4
good quality, value; watch the sizing
Color: Black, Size: Large
quality is good, especially for the the price. the built-in pocket square i like very much; it gives an automatic ''flare'' to the look and with no effort on your part. only thing iffy was the sizing. this item, like many entry-level blazers, are size-marked like a casual shirt in small, medium, large; not the typical 34, 36, etc. i wear large casual but smaller suit and because of the manufacturer's labeling went with large. result was that the jacket was too big. i didn't exchange it but probably could do size small (or actually try multiple sizes). i would buy again if i could find my proper size
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Reviewed in the United States on July 22, 2025
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Stingray
Chelsea, US
★★★★★ 5
Nice material nice fit
Nice material nice fit
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Reviewed in the United States on February 12, 2026
M
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Michael Pignataro
New York, US
★★★★★ 5
Get it
Can't beat it for the price perfect to give casual wear a touch of class a lot better quality than I thought it would be very happy with the purchase
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Reviewed in the United States on September 18, 2025
A
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Alicia C. Robinson
Bozeman, US
★★★★★ 5
Recommended
Size: Medium, Color: Black
Great fit and great quality. I do recommend this product.
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Reviewed in the United States on April 10, 2026
A
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Acrowbat
Lowell, US
★★★★★ 5
Suprisingly good quality and a great looking jacket
I have been searching for a ring master jacket for a circus themed gala where I will be the Auctioneer/Ring Master. All the other jackets I looked at were either cheap costume stuff or just looked a little too much military Hussar style with all of the added gold tassels. This has just the right class and definitely the right look. I was worried it would fit weird or just not be constructed well but I could not be any happier with this jacket- the sleeves are a perfect length when my arms hang at my side, as is the high waist cut and the length of the tails are also just right- and best of all the sequins really shine. I spent my career in the circus and the performing arts and this would have been more than acceptable on stage for someone to wear as a ring master or to look fancy and sparkly, assuming nobody will be standing on your shoulders and popping off your sequins. It is comfortable to wear, although I would not say it allows for full range of motion relative to a costume I would have actually worn in a circus while doing acrobatics. But that would be a totally hand made costume with flexible material and 4-10x the price. Overall it cannot be beat for your average wearer!
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Reviewed in the United States on January 9, 2023

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