Series ECP plugs offer the convenience of a center pull-tab plug in an ergonomic material. Depending upon port size, ECP series plugs may provide a seal against residual oil leakage during shipment. Since th tab is molded fully into the end and sidealls of the plug, it does not break off during plug removal. ECP series plugs fit all metric thread pitches for the given diameter and are color-coded for easy size identification.