Holley 550-872K Holley Sniper EFI Stealth 4150 Kit - Classic Gold Finish
SKU: 28535633596

Holley 550-872K Holley Sniper EFI Stealth 4150 Kit - Classic Gold Finish

Sale price$877.48 Regular price$974.98
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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:
  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: 28535633596

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Loyal Customer
Bozeman, US
★★★★★ 5
Roomy, Quality and Versatile
Color: Navy
Very nice quality and appearance. Large enough for wallet, phone, etc. Easily converted from clutch to shoulder purse with removable chain. Handle trim and chain are gold color. Wish it silver but very pleased overall and feel it is a good value.
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Reviewed in the United States on September 11, 2025
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Fatemeh Asgari
Lexington, US
★★★★★ 5
Love it
Color: Champagne
So beautiful
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Reviewed in the United States on May 24, 2026
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DRM
Fort Morgan, US
★★★★★ 3
Beautiful clutch... but chain is defective
Color: Navy, Color: Navy
This is a really beautiful clutch and the size inside is perfect for your necessities. (lip balm, hand sanitizer, pocket tissues, husbands inhaler, hand cream) I really loved that about it however, the chain which is the only option to not holding it all night is terrible. I bought this clutch for a gala but the chain got stuck on my dress just the first time I tried it on. I wish there was another option so I don't have to hold it all night. The chain is really bad quality. It will shred my lace dress. Also the chain is super long. Like too long to actually wear on on side. Or it would fall off all the time. I am 5'9 and this chain to super long for me. You would have to wear it as a cross body- and that does not look nice with formal attire. Returning.
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Reviewed in the United States on January 20, 2019
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Verified Purchase
Veora Glenn
Phoenix, US
★★★★★ 5
Versatile
Color: Taupe
Beautiful bag. I love it. Compliments any outfit.
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Reviewed in the United States on May 14, 2025
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Truvie
Lake Worth, US
★★★★★ 5
Beautiful
Color: Taupe
Beautiful purse and light to carry.
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Reviewed in the United States on May 31, 2026

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