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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
4.7 ★★★★★
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Product Reviews
★★★★★ 5
Terrific for fetch, would not hold up to unmonitored chewing
Color: Colors May Vary, Size: 5.5 Inch
Fabulous for playing fetch. Young crazy-dog enjoys it! Would not hold up to using as a chew toy - we remove it when not playing with the dog.
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Reviewed in the United States on January 13, 2026
★★★★★ 3
Gave my dog an allergic reaction
Color: Blue, Size: 4.5 Inch
I have one that has lasted 2 years of hard play, very durable. However, this newest one in the teal color gave my dog an allergic reaction. Her face and eyes swelled up within 1/2 of playing with it. So I threw it out. I have had no issues with the green one that I bought yesterday ago.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
The best gift for new dog owners
Color: Blue, Size: 4.5 Inch
This has been my mom's go-to toy to gift to friends and family when they get a new dog. I just followed suit and bought one as a gift for my friend's Newfoundland puppy.
Versatile, can be used as a ball or tug of war toy, and can buy a bigger size for a puppy to grow into because they can still grab it by the holes, unlike other balls and toys that are just too big to get their mouth around
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Not messy, beautiful and includes SPF!
Color: 02# Rose Gold
I love this glow oil! It is not too messy, leaves a beautiful, glimmery sheen and has SPF! I use it on my face, chest, arms, and feet!
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Smells amazing!
Color: 03# Gold
Love this! Soft glow with sunscreen and the fragrance and feel of the oil is delightful! Have not had it drip sunscreen and sweat into my eyes like so many sunscreens. It stays on and soaks in so nicely.
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Reviewed in the United States on April 16, 2026