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- USA
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
Holley 550-871K Holley Sniper EFI Stealth 4150 Master Kit - Black FinishOverview: 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 | Black |
| 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
4.8 ★★★★★
Based on 716 reviews
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Product Reviews
★★★★★ 5
Timberland Made It
Size: One Size, Color: Black (Money Clip)
It was ok the look was pretty my husband loved it it had great capacity the RFID protects his information perfectly haven’t had a problem there it’s very durable he loves the way it clips to his pocket and his cards and money was very easy to get to and the price was perfect he loved it and he loved that it was made by timberland
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Reviewed in the United States on November 18, 2025
★★★★★ 5
A nice sized wallet for front pocket keeping, holds the essentials & more quite well
Size: One Size, Color: Brown (Money Clip) 2
I like that I can keep cash, credit cards, ID and ATM cards all safely secured in this combo wallet/money clip that fits nicely in a back or front pants pocket (I keep mine in my front pocket). I've gotten this brand/style before, probably 6-8 years ago and it's the only wallet I'll use. I needed to replace mine as the spring metal clip does eventually wear through the leather at the rounded end of the money clip, but mine still functions just fine (I just wanted a new one for the holidays!) A well-made wallet and one I'll keep using and getting as long as I can find them.
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Reviewed in the United States on December 20, 2021
★★★★★ 5
Supple leather with a compact design.
Size: One Size, Color: Black II (Money Clip), Size: One Size, Color: Black II (Money Clip)
This is exactly what I was looking for and the price??? Unbelievably low. I saw a Carhartt one that I liked, but I didn’t care for the waxy look of leather on it so I looked on their website and they only offered it in that. I searched front pocket wallet on Amazon and I purchased this. It is a higher-quality leather, the price tag inside says $55. I paid under $18. The one thing I did like about the Carhartt one, it had a magnetic strap for the cash where as this one has a fixed money clip, but I see no problems with the design. Very minimalist design.
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Reviewed in the United States on August 16, 2025
★★★★★ 5
Timberline pocket Wallet
Size: One Size, Color: Brown (Money Clip) 2
good deal excellent product
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Reviewed in the United States on July 22, 2025
★★★★★ 5
Great quality
Color: Khaki
My recent purchase of the Timberland Men's Canvas & Leather Trifold Wallet has proven to be a stellar addition to my everyday essentials. This wallet seamlessly combines rugged style with practical functionality, making it a standout accessory that caters to both aesthetics and utility.
The blend of canvas and leather in the construction of this trifold wallet creates a visually appealing and durable exterior. The canvas adds a touch of rugged charm, while the leather accents provide a sophisticated edge. The combination strikes a perfect balance, making the wallet suitable for both casual and more formal occasions.
The wallet's design is well-thought-out, offering ample space without compromising its slim profile. The trifold layout allows for organized storage, with dedicated slots for cards, a transparent ID window, and a spacious bill compartment. The craftsmanship is evident in the stitching and detailing, ensuring longevity even with daily use.
The canvas material not only contributes to the wallet's aesthetics but also adds a layer of resilience. It withstands wear and tear admirably, maintaining its original look over time. The leather accents not only enhance the wallet's durability but also provide a tactile and luxurious feel.
One of the standout features is the RFID blocking technology incorporated into the wallet. In today's digital age, the added security against electronic theft of card information is a welcome bonus. It adds a layer of confidence knowing that my sensitive data is protected while on the go.
The size of the wallet is just right, fitting comfortably in my pocket without causing bulk. The trifold design doesn't compromise on storage capacity, making it a practical choice for those who carry multiple cards and cash regularly.
In conclusion, the Timberland Men's Canvas & Leather Trifold Wallet has exceeded my expectations in both style and functionality. Its durable construction, thoughtful design, and RFID blocking technology make it a reliable companion for everyday use. If you're in search of a wallet that seamlessly combines rugged charm with practical features, this Timberland offering is an excellent choice. A solid five-star rating for its versatility, durability, and overall quality.
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Reviewed in the United States on February 25, 2024