This is a A-59658D Gasket, Oil Pan Drain Plug PN: 59658DMain Description As Following : A-59658D Gasket, Oil Pan Drain Plug P.N: 59658D Inside Diameter: 0.888"/ 0.891"Outside Diameter: 1.278"/ 1.282"Thickness: 0.064" Found in Section & Models : Engine Parts > Gaskets, Case-IH COMBINE: 1440, Case-IH COMBINE: 1460, Case-IH COMBINE: 1480, Case-IH COMBINE: 1640 (S/N