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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:
- 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
4.9 ★★★★★
Based on 1781 reviews
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Product Reviews
★★★★★ 5
Great buy!
Color: Storage Cover Black, Size: Rechargeable
Great product. I'm glad I bought this to replace my old, cheap one that I got from Ikea. I like that it has double whisk as it does froth my liquids really well. I like the speed of it and it's easy to use and wash. The battery life is pretty long as well. I haven't charged it since I got it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
★★★★★ 5
Pretty darn good frother...
Color: Storage Cover Black, Size: Rechargeable
This is a pretty darn good frother/whisk, which we use primarily for mixing Crystal Light and LMNT drinks. It holds a charge for a long time and it is easy to recharge with the USB-C port and cable. My only complaint is that you must hold the power button continuously while operating it which is challenging to do using tall cups. It would be much better if is was a two stage on-off switch and had a longer wand, which isn't as long as it could be. But the unit is lightweight, easy to use and very versatile. Overall, I would buy it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 5
Works great!
Color: Storage Cover Black, Size: Rechargeable
I bought this because the frother I had was very weak. Even with new batteries, it just never had much oomph. I liked the idea of it being rechargeable and no more batteries!
I expected to have to charge it when it came, but it had full power. I have used it every day since it arrived, and it hasn't slowed down a bit. It is easy to use, just pushing down with my thumb on the top. I also love that it has a lid/case. When I bring it on a trip it is fully protected from damage.
I highly recommend this frother. It is the best one I have had - and I have had quite a few.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Great Little Gadget
Color: C-Black, Size: Model C Rechargeable
What a fun and easy to use gadget! I use it to foam Zero Sugar Coffeemate creamer for my iced coffee and it works perfectly. I thought the on/off button was on the top but it's on the side. I was concerned that I would unintentionally bump it but I don't. Easy to use, easy to clean and price is reasonable.
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Reviewed in the United States on May 2, 2026
★★★★★ 4
Good speed
Color: C-Black, Size: Model C Rechargeable
Love the rechargeable feature, works great as a frother, however, I have to get use to the on/off feature instead of the press to froth like the older unit.
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Reviewed in the United States on March 22, 2026
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