The 15397275 is a secondary locking component specially designed to enhance the safety and retention performance of automotive wiring harness connectors. In connector systems where the main housing is first secured by a primary latch, this part functions as a CPA secondary lock, installed or slid into the designated connector slot after the primary connection is completed. This extra locking step improves assembly assurance and helps maintain correct connector engagement throughout the service life of the vehicle.

Its dual-protection design significantly reduces the risk of loosening and momentary disconnection in harsh operating conditions, especially where engine vibration, road shock, or mechanical movement are present. By combining the primary latch with CPA protection, the product helps safeguard critical connections and maintain electrical continuity. It is particularly well suited for automotive applications requiring high connection reliability, especially in Aptiv/Delphi system harnesses and other demanding vehicle electrical architectures. For manufacturers and repair markets alike, the 15397275 provides an efficient, dependable solution for improving connector security and reducing failure risks.