Holley EFI 554-123 - 4 Channel Coil Driver, No Harness

Used to drive a two wire “dumb” ignition coil. The four 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 one 4-channel driver. Features: • Four channel • Potted design allows installation in engine compartment