NOTE: Requires the Steel Trigger Disk included. Fits most 1970-79 4 and 6 cylinder engines. Replaces: 332-4177A 3, 393-3736A 3, 393-3736A23, 393-3736A77, 393-3736A79 Unit includes the 4 & 6 cylinder trigger disks, oversize spacer, bearings, snap ring and instructions. Improved design uses Hall Effect Technology for improved performance and ease of installation (Removeable disk cap is replaceable)
