Proven Lock 2517-D1AC

The Proven Industries 2517-D1AC is a precision-fit coupler lock specifically engineered for 2-5/16" Demco cast adjustable-height couplers. This model will only fit that exact style of Demco adjustable coupler, ensuring a tight, secure fit that resists tampering and unauthorized hitching.

Designed for heavy-duty trailer security, the 2517-D1AC is commonly used on popular trailer brands including Diamond C, MAXX-D, and Big Tex. Its rugged construction and high-security lock cylinder help deter theft attempts while keeping your trailer protected during storage or unattended periods.