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$2,295 per item

This listing closed and did not sell. The item has been relisted.

Closes: Fri 17 Sep, 08:38 am | Location icon Seller located in Kerikeri, Northland ·119 views



Item is in stock!

Brand Holley Sniper EFI CFM 800 Coast Guard Approved Yes Emission Code 3 Flange Style Dual Bolt Pattern Fuel Pressure 58.5 PSI Height 3.28" Injector Size 100 lb/hr @ 58.5 PSI Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6) MAP Sensor 2Bar Max Horsepower Rating 650 Naturally Aspirated Model 4150 EFI Conversion Throttle Body Transmission 700R4/200R4, TH350 Part Number 550-510 or 550-511 is Black Model

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Supports up to 650hp with Four 100 Lb/Hr Injectors!

Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)

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!

Available in base & master kits (Master kits include 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!)

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 ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange

Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. Making Sniper EFI the perfect choice for carburetor to marine fuel injection conversions!

Questions & Answers

  • I have a 390 big block and thought this would be a great addition. Would you recommend this? haley(438)03:56 am, Mon, 13 Sep I have this carb running on a 460 as long as your engine doesn’t produce over 650 hp then this is more than sufficient if it does then we have to use a big electronic carb dsrturbo(10502) • Monday, 13 September 2021
  • Hi there, do you have the master kit parts for this? Looking for something to go on my 429 to replace the Holley carb. Cheers Luka luksi_5(31)01:20 pm, Tue, 14 Sep Hi Luka, As of about a month ago I have big come and official authorised Holley dealer. Any part number that you require for your vehicle just email it to me and I’ll give you a quote. By the way there Holly website is working but they are Holly trade customers website which is a different website that we will buy from around the world is down so we can’t actually buy anything until they fix it dsrturbo(10502) • Tuesday, 14 September 2021
Asking price

Was $3,000


Shipping options

Destination & description Price
Holley Sniper 550-510, Silver Model $7.50
Holley Sniper 550-511, Black Model $7.50
Shipping more than one item No extra charge

Seller does not allow pick-ups

Payment options

Seller accepts
Ping, NZ Bank Deposit


99.3% positive feedback
address verified in trade
Member since
Tuesday, 28 April 2009
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