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Description
Holley 550-872K Holley Sniper EFI Stealth 4150 Kit - Classic Gold 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 Super 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 8 injector variation is capable of supporting up to 1250 HP on forced
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 Super 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 8 injector variation is capable of supporting up to 1250 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of complete ignition timing control, fuel self-learning, 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 fit's a wide range of factory intake manifolds
- Throttle body mounted ECU - no extra boxes to mount
- Supports up to 650HP with four 100lb/hr injectors or 1250HP with eight 100lb/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)
- Requires use of external fuel pressure regulator, Holley PN# 12-886 or equivalent, set to a base pressure of 58.5 PSI
- Integrated ignition timing control improves idle stability, drive-ability, and wide open throttle response
- 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 realtime 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
- Also available in Black, PN# 550-871 and Shiny, PN# 550-870 finishes
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley Sniper EFI |
|---|---|
| CFM | 870 |
| Emission Code | 3 |
| Finish | Classic Gold |
| 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
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Product Reviews
★★★★★ 4
Turmeric curcumin & black pepper
These capsules come in a freshness and safety sealed bottle. They’re pretty large, but the vegan cellulose capsules swallow easily with a little water. A serving is 3 capsules, You really smell the black pepper extract and turmeric when you open the bottle.
The suggested use is to take them 20-30 minutes before a meal.
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Reviewed in the United States on December 23, 2024
★★★★★ 5
This is a good one
I really like these for inflammation reduction. That means a more comfortable, more pain-free body. I feel less achy when using these and that helps me through my day. They don't need to be taken (by me anyway) every day. These generally keep the aches and pains beat back so I have more comfortable movement and feel the effects of getting older noticeably less. They just help me feel generally more healthy.
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Reviewed in the United States on December 20, 2024
★★★★★ 5
"Solid credentials and nice presentation"...
The product presents as a professional well made product. The site page could be improved a tad with details just to match up with the product received.
"FDA registered" is a requirement so it's not an over-and-beyond move. However, GMP certified and 3rd party lab tested are and are nice pluses.
Capsule size is MEDIUM.
MG per capsule is 600 MG or more based on the label which is pretty good. Black pepper is known to aid in absorption so you always want to see that with turmeric and some other supplements that benefit from its addition.
Made in the USA is great. Ingredients are sourced domestically and globally. It would be nice to know where they come from outside of the USA.
This is a very solid option for turmeric.
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Reviewed in the United States on November 17, 2024
★★★★★ 5
Tastes Great & Actually Works!
Size: 100 Count (Pack of 1)
I was honestly surprised by how good these Benefiber chewable tablets taste — no weird texture or aftertaste at all. They’re super easy to take, especially if you don’t like mixing powders into drinks. Best of all, they really work! I noticed a difference quickly without any discomfort. This has become a daily staple for me, and I love how convenient and effective it is. Highly recommend if you’re looking for an easy fiber boost that doesn’t feel like a chore.
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Reviewed in the United States on February 16, 2026
★★★★★ 5
Fiber That's Actually Fun!
Size: 100 Count (Pack of 1)
Who knew fiber could be this enjoyable? Benefiber's chewable tablets have turned my daily routine into a flavor-packed adventure.
Pros:
Delicious Flavors: These assorted fruit flavors make taking fiber feel like indulging in a treat.
No Water Needed: Pop a tablet and go—no need to chase it down with a glass of water.
Digestive Dynamo: They work wonders for keeping things moving smoothly, if you catch my drift.
Cons:
Sweet Tooth Alert: They are a bit sweet, so if you're cutting back on sugar, keep that in mind.
In a nutshell, these chewable fiber tablets have made me a fiber fan. If you're looking to add some zest to your digestive health routine, give them a try.
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Reviewed in the United States on April 6, 2025