Built for 258ci-powered Jeep CJ trail rigs and weekend cruisers, this Sniper EFI BBD master kit bolts on in place of the factory BBD carburetor and includes a complete return-style fuel system. It delivers sharper throttle response and wide-open-throttle power over the carburetor, adds timing control, and puts an end to cold-start issues, hesitation, vapor lock, and flooding.
Key Features:
- Complete fuel system includes 20 ft. of 3/8 in. Vapor Guard fuel hose, fuel pump, filters, and hardware to return fuel to the tank
- Bolt-on BBD carburetor replacement engineered specifically for 1971-1986 Jeep CJ with the 258ci 6-cylinder engine
- Genuine Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learning
- Clamp-on oxygen sensor kit for 2.25 in. exhaust with stainless T-bolt clamps and stainless weldable O2 flange
- OEM-style TPS/IAC and fuel pressure regulator for dependable service
- High resolution full color 3.5 in. touchscreen for initial setup, tuning, and gauge displays
- Throttle body mounted ECU — no extra boxes to mount
- Only 4 wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
- Supports up to 350 hp with two 100 lb/hr injectors
- Self-tuning ECU requires no laptop or tuning experience
- Not compatible with kick-down operated transmissions
Specifications:
- Product Type: Sniper EFI BBD
- Finish: Shiny
- Flange Style: Jeep CJ BBD
- Injector Size: 100 lb/hr @ 58.5 PSI
- Fuel Pressure: 58.5 PSI
- Fuel Pump Flow Rating: 240 LPH
- Fuel System: Inline (Return)
- Sub Category: Service Kits
- Warning: California Proposition 65
- Part Number: 550-858K
Fits 1971-1986 Jeep CJ5, CJ6, and CJ7 models with the 258ci 6-cylinder engine. Not compatible with kick-down operated transmissions.
FAQ
What vehicles does the 550-858K fit?
1971-1986 Jeep CJ5, CJ6, and CJ7 models with the 258ci 6-cylinder engine, replacing the factory BBD carburetor.
Does this kit include a fuel system?
Yes, this master kit includes a complete return-style fuel system.
How much horsepower can this kit support?
Up to 350 hp with two 100 lb/hr injectors.
Is this kit compatible with a kick-down transmission?
No, it is not compatible with kick-down operated transmissions.
How is this kit tuned?
The 3.5 in. touchscreen handheld runs a setup wizard that builds a base tune, then the system self-tunes with no laptop required.
