This eight-channel coil driver module is a "dumb coil" driver that plugs into the main harness for engines running factory two-wire ignition coils. It contains two four-channel drivers and is required on eight-cylinder engines using this coil style, such as late-model Chrysler HEMI and Modular Ford engines.
Specifications:
- Channels: Eight (two 4-channel drivers)
- Coil Type: Two-wire "dumb" coils
- Construction: Potted design for engine-compartment installation
- Compatible Harnesses: Plug-and-play with 558-314, 558-315, 558-317 (Ford) and 558-310, 558-311 (HEMI)
- Part Number: 554-122
FAQ
What kind of coils does this module drive?
It drives two-wire "dumb" ignition coils, such as those used on late-model Chrysler HEMI and Modular Ford engines.
How many channels does this kit have?
It contains two 4-channel drivers for a total of eight channels, enough for an eight-cylinder engine.
Is this module sealed for engine bay installation?
Yes, it has a potted design that allows installation in the engine compartment.
What ignition harnesses is this module plug-and-play with?
It's plug-and-play with Holley Ford ignition harnesses 558-314, 558-315, and 558-317, and HEMI harnesses 558-310 and 558-311.

