When an item has an ENGINE OIL COOLER or EOC
1.) The title of the item may mention EOC or ENGINE COOLER
2.) The product information (details) will indicate the EOC sizes
Note: If you do not need the EOC connections, you can ignore them and install in most cases. The cooler is closed and does not need to be plugged.
See the illustration below for visual representation. (Look for the red arrow)
EOC: Plate 6 (type of cooler)
EOC: 11 1/2 (Distance between the EOC connections)