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Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold

Holley Sniper 550-872 Stealth 4150 EFI, Gold

Universal Fit, 4-Barrel Square Bore Carburetor Flange Type, Throttle Body Injection Style, Gold

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Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
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Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
Holley Sniper 550-872 Stealth 4150 EFI, Gold
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We estimate this item will ship on or before April 20th.
Part # 425550872
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$1,277.95
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Details

Carburetor Flange Type:
4-Barrel Square Bore
Injection Style:
Throttle Body
User Tunable:
Yes
Self Tuning:
Yes
Injectors Included:
Yes
Injector Size:
100 lbs./hr.
Intake Manifold Included:
No
Metering Style:
Speed density
EGR:
No
CFM:
870 CFM
Throttle Body Included:
Yes
Throttle Body Material:
Cast Aluminum
Throttle Body Finish:
Gold
Venturi Quantity:
4
Fuel Pump Included:
No
Fuel Rails Included:
No
Calibration Module Included:
Yes
ECM Included:
Yes
Wiring Harness Included:
Yes
Fuel Pressure Regulator Included:
No
Distributor Included:
No
MAP Sensor Included:
Yes
IAC Motor Included:
Yes
IAT Sensor Included:
Yes
TPS Sensor Included:
Yes
Use with Power Adder:
Yes
Max Horsepower Rating:
650
MFG. Part #:
550-872
Sold in Quantity:
Kit

Info

The Sniper Stealth 4150 EFI system from Holley features 4,100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Super Sniper Stealth 4150 EFI system from Holley features 4,100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The 8 injector variation is capable of supporting up to 1250 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of complete ignition timing control, fuel self-learning, improving idle stability, drivability, and wide-open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications?Master Kits include complete fuel system with an external fuel pressure regulator preset to 58.5psi, 20ft of 3/8" Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!

  • Bolt on 4150 flange carburetor replacement fit's a wide range of factory intake manifolds
  • Throttle body mounted ECU - no extra boxes to mount
  • Supports up to 650HP with four 100lb/hr injectors or 1250HP with eight 100lb/hr injectors
  • Includes high pressure fuel crossover line allowing you to quickly plumb your fuel system
  • All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
  • Timed spark part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.
  • Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions
  • Only 4 wiring connections required! (Battery +, battery - , switched ignition & RPM)
  • Requires use of external fuel pressure regulator, Holley PN# 12-886 or equivalent, set to a base pressure of 58.5 PSI
  • Integrated ignition timing control improves idle stability, drive-ability, and wide open throttle response
  • 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
  • Also available in Black, PN# 550-871 and Shiny, PN# 550-870 finishes

Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 10 business days for Holley Sniper to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Some parts are not legal for use in California or other states with similar laws/regulations

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