SKU: 24394954403

Holley Sniper Stealth 4150 Master Kit - Black

Sale price$877.48 Regular price$974.98
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

Holley Sniper Stealth 4150 Master Kit - BlackHolley Sniper Stealth 4150 Master Kit Black 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 - Black

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 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: Black
  • 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
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:
  1. 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
SKU: 24394954403

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SKI
Lexington, US
★★★★★ 5
Love these!
Color: Pink & Beige, Size: Small(fits up to size 7)
Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
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Reviewed in the United States on April 25, 2026
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Tammy James
New York, US
★★★★★ 5
HEALTH & BEAUTY
Flavor Name: XL silicone socks 2 pairs
LOVE IT
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
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Verified Purchase
Barb W
Lowell, US
★★★★★ 3
Stains easily. Tight for men's size 11 feet
Flavor Name: XL silicone socks 2 pairs, Flavor Name: XL silicone socks 2 pairs
Husband wore dark cotton socks over these gel foot covers overnight and the covers picked up color from the socks. Tried hand washing, even dabbing with a bleach soaked paper towel, but the stains remained. The covers are a bit tight for men's size 11. Edit: After a few more hand washings the stains began to fade. However one tore around the leg opening when taking it off.
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Reviewed in the United States on August 10, 2024
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Verified Purchase
DD
Whiting, US
★★★★★ 1
Worthless. Tore on first use.
Flavor Name: XL silicone socks 2 pairs
The first time I put these on my feet, the whole toe broke right through. They were a proper fit and my feet are well pedicured. Just very poor quality. I don’t recommend.
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Reviewed in the United States on August 2, 2024
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Verified Purchase
Pat Belanger
Fort Morgan, US
★★★★★ 5
Best fit!
Flavor Name: XL silicone socks 2 pairs
Search no further, these are the BEST! They are smazing at conforming to the shape of your feet. They fit snuggly with no sags/bags or uncomfortable pressure or squeezing of your toes.
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Reviewed in the United States on March 8, 2025

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