Delco Distributor Terminal Insulator (Square Shoulder)
Item #: ABC500-WSpecifications: Final Application: Fits: OC4, Super 55, Super 66, 550, 660, Super 77, 770, Super 88, 880, 950; Some 1800 using Delco 1112603 Replacement Number: 1K7430, 1K7433, 1K7434A Notes: Fits distributor housings w/ .300" dia. hole w/ keyway.