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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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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4.5 ★★★★★
Based on 6 reviews
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Verified Purchase
Winston
Massapequa, US
★★★★★ 3
Two tone color
Color: Silver GunColor, Color: Silver GunColor
I guess it’s good enough for what you pay but the band and base of the watch color do not match and it’s noticeable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
J
Verified Purchase
J.H.
Lake Worth, US
★★★★★ 5
Good quality
Color: Gold Black
Nice watch
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Reviewed in the United States on December 28, 2025
K
Verified Purchase
Kasie
Draper, US
★★★★★ 5
Great watch for preteen and above
My 12yo loves this. It’s stylish, durable and a great quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
P
Verified Purchase
Peg
Birmingham, US
★★★★★ 5
Love the blue numbers
Not quite sure how to rate this. It's an attractive basic analog watch; I especially like the blue numbers. And my experience with the reliability and durability of Casio has always been terrific. But... it's huge. I am stunned to see the other review that states that this watch is too small and is suitable only for a child; I think the reviewer must have been reviewing some other model. This one is larger than any other watch I own, including a hand-me-down men's watch that I got from a friend. This is NOT a unisex watch and should not be advertised as such. But if Casio would make the same thing in a women's model, I would snap it up. UPDATE: When my smaller watch died, I finally started wearing this one. I've gotten used to the size, and now it looks and feels normal to me instead of huge. I adore the blue numbers--they make me happy every time I look at the watch.
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Reviewed in the United States on February 6, 2016
M
Verified Purchase
M Keith
Pawtucket, US
★★★★★ 4
Smaller than I thought it would be
Nice watch, very small, definitely a woman's or child's watch
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2025

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