MSD 7555 Spark Plug Wire Sync Kit for Power Grid & Digital Programmable Ignitions

The MSD 7555 Spark Plug Wire Sync Kit is an inductive synchronization pickup designed to enable cylinder-to-cylinder timing control on MSD Power Grid and Digital Programmable Ignition systems. This kit provides a simple, reliable way to feed a synchronization signal to MSD's advanced ignition controls without complex wiring or alignment procedures.

The inductive sync pickup slides directly over the number one spark plug wire and senses each firing event. That trigger signal is then transmitted to the MSD ignition control unit via a fiber optic cable, delivering a clean, interference-free signal path. Because the connection uses fiber optic technology, there is no risk of EMI or electromagnetic interference affecting other electronics on the vehicle.

Key Features:

• Inductive pickup installs over the #1 spark plug wire — no cutting or splicing required
• Fiber optic cable transmits sync signal to MSD ignition control with zero EMI risk
• Enables individual cylinder timing (ICT) control on Power Grid and Digital Programmable Ignitions
• No phasing or alignment required during installation
• Compatible with MSD 7720 Power Grid Ignition Controller and 7-Series programmable ignition boxes
• Not for use with solid core spark plug wires
• Replacement fiber optic cable available separately as MSD PN 7556

What's Included:

• 1 – Inductive Sync Pickup
• 1 – 12 feet of Fiber Optic Cable with Sleeve
• 1 – Tie Wrap

The MSD 7555 is legal for sale and use in all 50 states and Canada (C.A.R.B. E.O. #D-57-22), making it compliant for use on emissions-controlled vehicles. If the fiber optic cable is too long for your application, loop and secure the excess — do not cut it.