776487-2 is an AMPSEAL 16 4-way plug connector designed for environmentally sealed electrical connections in industrial and commercial transportation applications. The connector features 1.58 mm contact size with B key keying and a black housing with green polarization ring (PLR) for positive mating identification. It incorporates a standard diameter seal for environmental protection and includes integrated wedge/TPA (Tertiary Positive Assurance) locking mechanisms. This connector is commonly used in automotive, heavy-duty truck, and industrial equipment where reliable, sealed connections are required to prevent moisture and contaminant ingress in harsh operating environments.