12162197 is a white cavity plug designed for use with Aptiv low voltage automotive connectors. This accessory component is used to seal unused cavities in connector housings, maintaining environmental protection and preventing contamination. The cavity plug does not include a restraint ring and is compatible with multiple Aptiv connector series including APEX 1.2, HDK 1.2, and other sealed connector families. It is commonly used in automotive wiring harness applications where not all connector cavities are populated with terminals.