SKU: 77759684437

Holley Sniper EFI 4BBL Self Tuning Master Kit - Classic Gold Finish (HO550-516K)

Sale price$1758.60 Regular price$1954.00
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Ships within 48 hours · Estimated delivery Sep 21 - Sep 26

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Description

Holley Sniper EFI 4BBL Self Tuning Master Kit - Classic Gold Finish (HO550-516K)HO550 516K HOLLEY SNIPER EFI MASTER KIT 800 cfm 4 Injector Throttle Body, 650 HP N A Part Number: HO550 516K Holley just brought EFI within range introducing Sniper EFI master kits! It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off road trucks or nearly any carburetted vehicle. The Sniper EFI master kit contains the most complete

HO550-516K - HOLLEY SNIPER EFI MASTER KIT

800 cfm 4 Injector Throttle Body, 650 HP N/A

Part Number: HO550-516K

Holley just brought EFI within range - introducing Sniper EFI master kits! It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off road trucks or nearly any carburetted vehicle. The Sniper EFI master kit contains the most complete EFI fuel system on the market. Everything is included to completely plumb your fuel system including; 20 feet of 3/8" EFI Hose, in-line fuel pump, post and pre fuel filters, return bulkhead, and all of the necessary fittings and hardware. Put an end to cold start issues, hesitations, vapor lock, and flooding. Upgrade to Sniper EFI and get the tactical accuracy of EFI today!
Features:
Dual Pattern bolt on carburettor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended)
Throttle body mounted ECU - no extra boxes to mount
Supports up to 650hp with Four 100 Lb/Hr Injectors!
Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
Includes complete fuel system consisting of; 20ft of 3/8" Vapor Guard Fuel Hose, 12-920 Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
Integrated ignition timing control & coil driver
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 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 ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange

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: 77759684437

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4.8 ★★★★★
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Robin Steele
Houston, US
★★★★★ 5
Works Great
Color: Black
This is very durable and easy to assemble. The water does drain nicely but i'd wash it every week or so. They come with small black plastic to put on the bottom so it does not slide around. Made of plastic so easy to clean. Organizes all of your sponges nicely. Looks great on the counter. Easy to move and adjust.
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Reviewed in the United States on May 28, 2026
A
Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 5
good quality
Color: Black
sturdy and holds a lot of stuff. does not rust and fits perfectly on countertop!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
H
Verified Purchase
highbridge
Massapequa, US
★★★★★ 4
Functional and fine
Color: Black
The sponge holder looks bigger in the picture, but it looks fine and I appreciate its functionality.
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Reviewed in the United States on December 28, 2025
D
Verified Purchase
Dante Evans
Alexandria, US
★★★★★ 5
Gets the job done
Color: Black
I tried to give it 5 stars, it's compact, sturdy, and gets the job done.
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Reviewed in the United States on March 23, 2026
J
Verified Purchase
jody
Fort Morgan, US
★★★★★ 3
ok product
Color: Black
Not as well built as I thought it would be
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Reviewed in the United States on March 19, 2026

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