Heavy-duty 7-pin electric coupler socket adapter plug ensures secure power transfer between truck and trailer. Precision-engineered brass terminals with nickel plating resist corrosion and ensure optimal conductivity. Industrial-grade thermoplastic housing withstands extreme temperatures (-40°C to 120°C) and UV exposure.

Waterproof silicone gasket and dustproof design maintain performance in harsh off-road conditions. Compatible with standard 7-way trailer wiring systems for brake lights, turn signals, and auxiliary power.

Machined aluminum locking collar prevents accidental disconnection during transit. Direct replacement part for Freightliner, Volvo, Kenworth, and other heavy-duty trucks. Sold in bulk quantities with wholesale pricing for fleet operators and repair shops.