6BTA5.9 Cummins Oil Cooler Core Gasket 3864459 Parts Catalog Ref No. Part Name Part No. Required 1 Oil Cooler Core Gasket 3864459 1 2 Cooler Core 3959031 1 3 Filter Head Gasket 3864458 1 4 Pressure Relief Valve 3936365 1 Above is the introduction of the Cummins Oil Cooler Core Gasket 3864459, while if you need Oil Cooler Core …