The Holley Sniper EFI Hyperspark CD Ignition Box completes a HyperSpark ignition upgrade alongside a billet distributor with Hall Effect crank signal sensor and ignition coil, giving Sniper EFI installs a plug-and-play ignition solution with minimal wiring.
Specifications:
- Product Type: CD Ignition Box
- Design: Sealed and powdercoated housing for harsh environments
- Connector: Pre-terminated ignition coil connector
- Indicator: LED verifies 12V power, cranking RPM, and low battery voltage
- Includes: Ignition box, harness, mounting screws, lock washers
- Part Number: 556-151
Designed to work with Sniper EFI systems and requires minimal wiring for installation.
FAQ
What does this ignition box include?
It includes the ignition box, wiring harness, mounting screws, and lock washers.
Does it work with any distributor?
It's designed to work as part of the HyperSpark system, alongside a Hall Effect billet distributor and ignition coil for a complete Sniper EFI ignition upgrade.
How do I know the box is getting power?
An onboard LED helps verify 12V power, cranking RPM, and low battery voltage.

