SKU: 98360425115

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: 98360425115

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Amazon Customer
Whiting, US
★★★★★ 5
Favorite sunscreen for my grandson.
Size: 3 Fl Oz (Pack of 1)
Love this product not full of chemicals
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Reviewed in the United States on March 28, 2026
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Kharla Polonio
Phoenix, US
★★★★★ 5
Me sorprendió la protección, mi hija no se quemó ni un poco
Size: 3 Fl Oz (Pack of 1), Size: 3 Fl Oz (Pack of 1)
Tengo una bebe de 3 meses, íbamos para la playa por primera vez (vivimos en el caribe) necesitaba un protector solar que me permitiera protegerla del sol directo, pero sin químicos y que fuera gentil con su piel. Ya había utilizado el jabón de la marca y me pareció excelente idea comprar el protector por lo que ofrece. No me arrepiento, la textura al inicio me pareció densa, pero luego cuando lo esparcí bien en todo el cuerpo de mi bebé me gustó, no deja la piel blanquecina, se incorpora bien en la piel, no tiene olor fuerte y puedo decir que para mi asombro la niña no se quemó ni un poquito, es decir me sorprendió que teniendo una tez tan blanca no se quedara ni roja. Este protector solar superó literalmente mis expectativas.
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Reviewed in the United States on May 17, 2026
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Nazmul
Carnegie, US
★★★★★ 1
Babies products so please fix this product and sell again.
Size: 3 Fl Oz (Pack of 1)
Very disappointed with this sunscreen. The product came out watery and separated like oil and liquid mixed together. Even after shaking, the texture felt weird and uneven. It leaves a heavy white cast, feels greasy, and doesn’t blend well into the skin. Definitely not the quality I expected, and I don’t feel confident using it for proper sun protection. Would not buy again.
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Reviewed in the United States on May 11, 2026
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Teachermomma
Belleville, US
★★★★★ 5
safe and peace of mind!
Size: 3 Fl Oz (Pack of 1)
Talk to your doctor always before using a new product on your baby's skin before 6 months! I love this sunscreen! I gives me such peace of mind when bringing my little ones out in the sun over the summer. It is super thick, so a little goes a long way! It covers any area completely, takes a bit to rub in, but doesn't leave a greasy feeling. Best part? It won't drip when your little one is sweating, so no sunscreen burning their eyes!
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Reviewed in the United States on January 7, 2026
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Amazon Customer
Massapequa, US
★★★★★ 5
Good
Size: 3 Fl Oz (Pack of 1)
Whole family continues to purchase/use this sunscreen even though my child is no longer a baby. It does leave some white residue/cast. I haven't found a mineral sunscreen that doesn't.
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