Hero image 0 of Holley EFI 550-871K 4150 Sniper Stealth Master Kit, 0 of 7

Holley EFI 550-871K 4150 Sniper Stealth Master Kit

Name: Holley EFI 550-871K 4150 Sniper Stealth Master Kit
Brand: Holley Sniper EFI
SKU: 284699752
Price: 1799.95 USD
Availability: InStock
Rating: 5 (1 reviews)

5 stars out of 1 review

(5.0)|

1 rating

Check if this fits your vehicle

Key item features

Direct Replacement: Bolts directly onto a 4150 flange carburetor, featuring a throttle body mounted ECU for a stealth installation.
Powerful Support: Supports up to 650hp naturally aspirated or 600hp with forced induction using four 100 Lb/Hr injectors.
Simplified Wiring: Requires only four wiring connections (Battery +, Battery -, Switched Ignition & RPM) with all wiring exiting below the rear fuel injector cover.
Integrated Control: Includes integrated ignition timing control and a timed spark port for vacuum advanced distributors.
User-Friendly Tuning: Features a high-resolution full-color touchscreen with a simple calibration wizard and self-tuning ECU, eliminating the need for a laptop.
Complete Fuel System: Master Kits include an external fuel pressure regulator preset to 58.5psi, 20ft of 3/8" Vapor Guard Fuel Hose, fuel pump, filters, and necessary hardware.
Versatile Compatibility: Air entry is machined to fit most stock-style air cleaners and includes transmission kick-down provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 applications.

Generated by AI

Specs

Vehicle model
550-871K
Vehicle make
Ford
Vehicle fitment type
Specific
Automotive parts division
Performance
Brand
Holley Sniper EFI
Automotive specialty part type
Fuel Injection

Current price is $1,799.95

Price when purchased online

Free shipping
Free 90-day returns

How do you want your item?

I want delivery savings with

Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.

How do you want your item?

Columbus, 43215

Arrives by Thu, Feb 5

Sold and shipped by Walmart.com

Free 90-day returns

This item is gift eligible

More seller options (2)

Starting from $1,849.95

Get free delivery, shipping and more*

*Restrictions apply

Try Walmart+ now

About this item

Product details

4 Barrel Fuel Injection Conversion - Self-Tuning Kit + Handheld EFI Monitor - Black Finish;

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 Sniper Stealth 4150 ECU is capable of fuel map self-learning and ignition timing control, 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
Throttle body mounted ECU â€" no extra boxes to mount
Supports up to 650hp with Four 100 Lb/Hr Injectors!
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)
External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886.
Integrated ignition timing control
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 donâ€™t have to be a computer/tuning wiz to have EFI!
The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time 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
Available in 3 finishes: Shiny, Black and coming soon, Gold

info:

We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.

Specifications

Vehicle model

550-871K

Vehicle make

Ford

Vehicle fitment type

Specific

Automotive parts division

Performance

Warranty

Warranty information

For warranty claims / info contact Manufacturer / Brand

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warranty url

https://www.nosoemparts.com/pages/returns

Warnings

Warning Text

California Proposition 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.com

Compare with similar items

Comparison Overview:
Product	Viewing this item Holley EFI 550-871K 4150 Sniper Stealth Master Kit current price $1,799.95 Holley EFI 550-871K 4150 Sniper Stealth Master Kit 5 out of 5 Stars. 1 reviews	Holley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford current price $1,999.95 Holley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford	Holley Sniper EFI 550-872K Holley Sniper Stealth 4150 Master Kit - Gold Finish current price $1,849.95 Holley Sniper EFI 550-872K Holley Sniper Stealth 4150 Master Kit - Gold Finish	Holley Sniper 2 EFI Bundle Kit SBC BLACK current price $1,949.95 Holley Sniper 2 EFI Bundle Kit SBC BLACK	Holley Sniper EFI 550-511-3PK Sniper 2 EFI - Black - Inline Pump - With PDM - 3.5 in. Screen current price $1,899.95 Holley Sniper EFI 550-511-3PK Sniper 2 EFI - Black - Inline Pump - With PDM - 3.5 in. Screen	Holley 550-511-BXX Sniper 2 EFI - Black, Base Kit Without PDM current price $1,299.95 Holley 550-511-BXX Sniper 2 EFI - Black, Base Kit Without PDM	Holley Sniper EFI 556-154 HyperSpark 2 CD Ignition Box current price $399.95 Holley Sniper EFI 556-154 HyperSpark 2 CD Ignition Box	Holley EFI 550-858K current price $1,699.95 Holley EFI 550-858K 5 out of 5 Stars. 1 reviews	Holley EFI 550-871 4150 Sniper Stealth current price $1,536.39 Holley EFI 550-871 4150 Sniper Stealth	Holley EFI 550-850K current price $1,599.95 Holley EFI 550-850K 4.5 out of 5 Stars. 2 reviews

Comparison Chart:
Vehicle model	550-871KHolley EFI 550-871K 4150 Sniper Stealth Master Kit	550-511-BPX-SBFHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford	-Holley Sniper EFI 550-872K Holley Sniper Stealth 4150 Master Kit - Gold Finish	550-511-BPX-SBCHolley Sniper 2 EFI Bundle Kit SBC BLACK	-Holley Sniper EFI 550-511-3PK Sniper 2 EFI - Black - Inline Pump - With PDM - 3.5 in. Screen	550-511-BXXHolley 550-511-BXX Sniper 2 EFI - Black, Base Kit Without PDM	SNP556-154Holley Sniper EFI 556-154 HyperSpark 2 CD Ignition Box	550-858KHolley EFI 550-858K	-Holley EFI 550-871 4150 Sniper Stealth	-Holley EFI 550-850K
Vehicle make	FordHolley EFI 550-871K 4150 Sniper Stealth Master Kit	FordHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford	-Holley Sniper EFI 550-872K Holley Sniper Stealth 4150 Master Kit - Gold Finish	ChevyHolley Sniper 2 EFI Bundle Kit SBC BLACK	FordHolley Sniper EFI 550-511-3PK Sniper 2 EFI - Black - Inline Pump - With PDM - 3.5 in. Screen	-Holley 550-511-BXX Sniper 2 EFI - Black, Base Kit Without PDM	-Holley Sniper EFI 556-154 HyperSpark 2 CD Ignition Box	JeepHolley EFI 550-858K	FordHolley EFI 550-871 4150 Sniper Stealth	FordHolley EFI 550-850K
Vehicle fitment type	SpecificHolley EFI 550-871K 4150 Sniper Stealth Master Kit	SpecificHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford	SpecificHolley Sniper EFI 550-872K Holley Sniper Stealth 4150 Master Kit - Gold Finish	SpecificHolley Sniper 2 EFI Bundle Kit SBC BLACK	SpecificHolley Sniper EFI 550-511-3PK Sniper 2 EFI - Black - Inline Pump - With PDM - 3.5 in. Screen	SpecificHolley 550-511-BXX Sniper 2 EFI - Black, Base Kit Without PDM	SpecificHolley Sniper EFI 556-154 HyperSpark 2 CD Ignition Box	UniversalHolley EFI 550-858K	UniversalHolley EFI 550-871 4150 Sniper Stealth	SpecificHolley EFI 550-850K
Automotive parts division	PerformanceHolley EFI 550-871K 4150 Sniper Stealth Master Kit	PerformanceHolley 550-511-BPX-SBF Sniper 2 EFI Bundle w/ Hyperspark Ignition System - Fits Ford	PerformanceHolley Sniper EFI 550-872K Holley Sniper Stealth 4150 Master Kit - Gold Finish	PerformanceHolley Sniper 2 EFI Bundle Kit SBC BLACK	-Holley Sniper EFI 550-511-3PK Sniper 2 EFI - Black - Inline Pump - With PDM - 3.5 in. Screen	PerformanceHolley 550-511-BXX Sniper 2 EFI - Black, Base Kit Without PDM	-Holley Sniper EFI 556-154 HyperSpark 2 CD Ignition Box	PerformanceHolley EFI 550-858K	PerformanceHolley EFI 550-871 4150 Sniper Stealth	PerformanceHolley EFI 550-850K