Holley EFI 4 Channel Ignition Coil Drivers (Pair) 421998 Gasket matched ports with smooth

Gasket matched ports with smooth internal geometry to maintain optimal performance and efficiency

Lower Pulley Boss

Multi-Ply Reinforced Automotive-Grade Hoses Provide A Secure Fitment And Last Connection

88 in Diameter Base

4 mounting holes designed for the use of 5/16" socket head cap hardware for secure and robust mounting

Holley EFI 4 Channel Ignition Coil Drivers (Pair) 421998 Gasket matched ports with smoothDrives 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 Product Description: Ignition Coil Drivers 4 Channel Pair Holley is quickly becoming The New Standard In EFI! Holleys HP ECU is standard equipment on the 2013 2014 Chevrolet COPO Camaro and Holleys EFI