Product description
International 1466, 1486, 1566, 1586, 3388, 4166, 4186, 5088, 6388
Contains wide gap rings, requires valve cover breather
Moly Coated Top Ring: .118" Keystone (used only with valve cover breather)
2nd groove: .118" Keystone
Oil: .250"
Liner o-rings included