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For Your Every Summer RSVP, with Code: SUMMER15
Description
Holley Sniper Stealth 4150 Master Kit - ShinyHolley Sniper Stealth 4150 Master Kit Shiny Supports Up To 650HP 3. 5 in. Handheld Monitor Carburetor Styling No Fuel System Overview Holley's Sniper Stealth 4150 Master Kit gives you carburetor styling but functions just like the Sniper! A 4150 stealth is a great way to upgrade your ride to fuel injection in a cost efficient way with just 4 simple connections required. Take your build to the next level and take advantage of improved engine
Holley Sniper Stealth 4150 Master Kit - ShinySupports Up To 650HP - 3.5 in. Handheld Monitor - Carburetor Styling - No Fuel System
Overview
Holley's Sniper Stealth 4150 Master Kit gives you carburetor styling but functions just like the Sniper! A 4150 stealth is a great way to upgrade your ride to fuel injection in a cost-efficient way with just 4 simple connections required. Take your build to the next level and take advantage of improved engine performance, better MPG's and easier starting. This kit supports up to 650hp naturally aspirated and 600hp boosted with Four 100 Lb/Hr injectors! You don't have to be a computer wiz or tuning professional to run a sniper kit on your build. Simplicity is what we strive for! Our calibration wizard allows you to just answer a few questions about your engine and the system will begin self-tuning with no laptop required. Use the high resolution 3.5" full color touchscreen for tuning and gauge displays. The stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications. Once you made your conversion to EFI, don't stop there! Sniper is an Ecosystem! This kit pair's seamlessly together with Holley's Sniper Hyperspark Ignition, Fuel System's, Air Cleaners, Throttle Body Digital Dash to unlock the full potential of your build.
Part # 534-247 is required to complete installation.
Features:
- Bolt on 4150 Flange Carburetor Replacement
- 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!
- Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition RPM)
- Supports up to 650hp with Four 100 Lb/Hr Injectors!
- Throttle body mounted ECU ???? no extra boxes to mount
- High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
- 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.
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886.
- Integrated ignition timing control
- 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
Details:
- CFM: 870
- Finish: Shiny
- Flange Style: 4150
- Fuel Pressure: 58.5 PSI
- Injector Size: 100 lb/hr @ 58.5 PSI
- Inlet / Outlet Size: 3/4-16 Female O-Ring (AN 8)
- MAP Sensor: 2Bar
- Max Horsepower Rating: 650 Naturally Aspirated
- Model: 4150 EFI Conversion Throttle Body
- Transmission: 700R4/200R4
- Transmission: Ford C4/C6
- Transmission: TH350
Links
Instruction Sheet
Instruction Sheet
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
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Product Reviews
★★★★★ 5
Great quality
Size: 8 INCH, Number of Items: 20
Wind spinners are awesome! Turned out great using sublimation print
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Great product
Size: 3 INCH, Number of Items: 20
Great value sublimates wonderfully! Will buy more!
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Reviewed in the United States on October 26, 2025
★★★★★ 5
Perfect sublimation items!
Size: 3 INCH, Number of Items: 20
These are the cutest items! The print beautifully and easy to open! Will purchase again!!
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Reviewed in the United States on August 19, 2025
★★★★★ 5
Awesome product at a fair price
Size: 8 INCH, Number of Items: 20
We sold out on the first batch we ordered for our first craft show with this product. Works as intended.
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Reviewed in the United States on May 26, 2025
★★★★★ 5
Great purchase
Size: 8 INCH, Number of Items: 20
Have ordered these wind spinners for years and love them every time! They sublimate beautifully and are each individually wrapped
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Reviewed in the United States on May 30, 2026