SKU: 28535633596

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

Sale price$877.48 Regular price$974.98
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 2271 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Dylan
West Palm Beach, US
★★★★★ 5
Love the design and shape - Customer Service Amazing
Color: Black with Lid
UPDATED READ BELOW: Initial review: I think this is a great product, at a great price. Unfortunately, the wireless charger mine came with doesn’t work. It’ll charge for a few seconds, shut off, start charging, immediately shut back off - repeating this cycle. I’ve used the included cable, and two other cables as well as different outlets. Unfortunately, I threw out the box before checking this so can’t return to replace it…ugh Updated approx 3 weeks later: Seller reached out and sent me a replacement charger at no cost, it works perfectly so far (even though it has been a day lol) but no issues, no complaints here. Love this organizer - feels premium. Definitely recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2024
D
Verified Purchase
Diane L. Lifrak
Massapequa, US
★★★★★ 4
Great organizer but will only charge a phone
Color: Black with Lid
My husband likes all the compartments. The only negative is that it doesn’t charge multiple items like AirPods or tablets. It is a very sturdy design and looks like it would organize things on a drop and go table.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2025
M
Verified Purchase
Melissa A.
Port Orchard, US
★★★★★ 5
Perfect!
Color: Brown
I got this for my husband and he really likes it! I do too. It has the phone charger which is a plus and it's perfect for his side of the bed! I'm thinking of getting myself one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
G
Verified Purchase
Griff Lamar
Whiting, US
★★★★★ 5
Great Organizer
Color: Black with Lid
I’m a stickler for organization so this cleans up my night stand perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2024
M
Verified Purchase
MT
Cuba, US
★★★★★ 3
Feels like it wouldn’t last very long.
Color: Black with Lid
Bottom line, most things just aren’t made with quality in mind anymore.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2023

recommand products