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Holley Sniper EFI

Sniper EFI Coil Driver Module


Part # 556-150 Be the first to write a review
Estimated shipping date: 11/08/2021
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The Sniper EFI Coil Driver Module is designed to be used in place of a capacitive discharge box. This coil driver is utilized to amplify the energy transferred to your spark plug, promoting complete combustion in the cylinder!


  • Compact size allows for easy installation without cluttering up your engine bay!
  • Labeled wires take the stress out of your wiring installation
  • Requires Canister Style Ignition Coil
Brand Holley Sniper EFI
Emission Code4
Product TypeIgnition Boxes
Part Number556-150

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Not designed to be used with Sniper EFI Ignition Coil part number 556-152.

Have a question about this product?

  • Question

    Hi, I have asked this question before but I still have not received and answer. My question is will the 556-150 work with my Terminator EFI and Dual sync distributor. Thanks Sean

    By Sean G. on August 12, 2019

    As a blanket answer, Yes, those components will all work together. The Driver essentially replaces an MSD box with regard to wiring and functionality. That being said, the coil driver shouldn''t be used on a higher horsepower application. Anything over 400HP will tax the capabilities of the coil driver.
  • Question

    Hi, I just received my Sniper EFI and found this in the box. It is not referenced at all in the instructions. What is it for and do I install it with the kit. I have a 350 Buick engine with a Pertonix III Ignition.

    By Mike G. on March 13, 2018

    Mike, The 556-150 is the Sniper EFI Ignition coil driver module. It can be used in the place of a CD box in installations that need something to drive a coil. If you search the below document for the term "coil driver" you will find several sections of the instructions with information regarding this component. Since you already have an existing ignition system, you do not need to utilize this component of the kit.
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    Some parts are not legal for use in California or other states with similar regulations.