Holley EFI 554-122 - Coil Drivers, Contains(2) Four Channel,

Used to drive a two wire “dumb” ignition coil. Typically used on late model Chrysler HEMI and Modular Ford engines. Contains two 4-channel drivers. The eight channel coil driver module is a "dumb coil" driver module that plugs into the main harness, which is needed when running the factory coils. Contains two 4-channel drivers, requires on an eight cylinder engine. Features: • Eight channel • Drives two wire “Dumb Coils” • Potted design allows installation in engine compartment • Contains two 4-channel drivers • Plug and Play with 558-314, 558-315 and 558-317 Ford Ignition Harnesses • Plug and Play with 558-310 and 558-311 HEMI Ignition Harnesses