Included = 1x Washer. ID = 7/16".
ARP 5/16in ID x 0.675in OD No Chamfer Washer (One Washer) - AGW675N
ARP Black Washer, No Chamfer, 7/16 inch ID, 13/16 inch OD (1 piece)
ARP Black Washer, 1/2 inch ID, 7/8 inch OD (1 piece)
ARP 7/16 ID 7/8 OD Black Washers (10 pack)
Arp 200-8510 Black Washer - 7/16 Id X 13/16 Od (1) Flat Washer, Special Purpose,
7/16 ID Washer .950 OD Non-Chamfered (20pk) ARP APW950N-CP-20
