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Description
Holley 550-870K Sniper Stealth 4150 Self-Tuning Fuel Injection System Master KitOverview: 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
Overview:
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. Part # 34-42 is required for a bolt-in installation.
Features:
- Bolt on 4150 Flange Carburetor Replacement
- Throttle body mounted ECU - 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 don'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
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley Sniper EFI |
|---|---|
| CFM | 870 |
| Emission Code | 3 |
| Finish | Shiny |
| Flange Style | 4150 |
| Fuel Pressure | 58.5 PSI |
| Height | 3.28" |
| 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 |
| Product Type | Sniper Stealth EFI |
| Transmission | 700R4/200R4 |
| Transmission | Ford C4/C6 |
| Transmission | TH350 |
| Warning | California Proposition 65 |
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 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
The ultimate "wake-up" scent (and no dry skin!)
Scent: Citrus + Eucalyptus, Size: 12.2 Fl Oz (Pack of 1)
I’ve tried plenty of "invigorating" body washes, but most of them just smell like artificial lime or leave my skin feeling tight. This Huron Body Wash is in a completely different league.
Why it’s my new daily go-to:
Complex, Fresh Scent: The mix of citrus, eucalyptus, and mint is incredible. It’s crisp and bold enough to wake you up in the morning, but the aromatic greens give it a sophisticated, high-end finish that doesn't smell like a cheap drugstore brand.
Actually Moisturizing: Usually, "cleansing" washes strip your skin, but the coconut oil and Vitamin E in this actually leave my skin feeling smooth. I’ve noticed way less dryness on my elbows and shoulders since switching.
Great Lather: A little goes a long way. It creates a rich, creamy lather that feels premium and rinses off clean without any slimy residue.
The "Peace of Mind" Factor: It’s hard to find a performance-focused body wash that is also vegan and cruelty-free. Knowing I'm getting a professional-grade product without the harsh chemicals (and with Witch Hazel to keep my skin clear) makes the price totally worth it.
Bottom Line: If you want to start your day smelling like a high-end spa rather than a locker room, get this. It’s worth every penny!
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Great product that seems to last a good long time
Scent: Citrus + Eucalyptus, Size: 12.2 Fl Oz (Pack of 2)
This has a subtly pleasant smell. I like it. I like the consistency too. I will order again. It's soft on my skin and super easy to use. I like the bottle size. It's not too big and it's not too small.
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Reviewed in the United States on March 24, 2026
★★★★★ 4
Smells Amazing, Premium Price
Scent: Sea Salt, Size: 11.3 Fl Oz (Pack of 1)
Great body wash overall. It smells really good clean, fresh, and not overpowering. It lathers well and leaves my skin feeling clean without drying it out. The only downside is that it’s a bit pricey compared to other options, but the quality and scent definitely make it worth considering.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
Love this stuff
Scent: Citrus + Eucalyptus, Size: 30.3 Fl Oz (Pack of 1)
Works great and love them scent.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
One of the best bodywashes I've ever tried!
Scent: Sea Salt, Size: 11.3 Fl Oz (Pack of 1)
Huron Body Wash is one of the best I've ever used. Great scents, and leaves your skin smelling and feeling great. The deodorant is a really great compliment to the body wash. Feel good all day!
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Reviewed in the United States on March 24, 2026