Master Lock 379DAT Coupler Lock for Trailers

The Master Lock 379DAT is a heavy-duty coupler lock designed to protect trailers, boats, and RVs from theft. This universal coupler lock fits multiple coupler sizes including 1-7/8 inch, 2 inch, and 2-5/16 inch couplers, making it compatible with most standard trailers. It also accommodates Hammerblow and UFP style couplers for versatile protection.

Key Features:

• Universal fit for 1-7/8", 2", and 2-5/16" trailer couplers
• Compatible with Hammerblow and UFP style couplers
• Durable laminated steel frame resists cutting and sawing
• Protective keyway cover shields lock mechanism from dirt, water, and ice
• Bright yellow finish provides high visibility as a theft deterrent
• Locks over the coupler to prevent unauthorized hitching

This coupler lock provides an effective visual deterrent while securing your trailer when parked or stored. The rugged construction and weather-resistant design ensure reliable performance in all conditions, making it ideal for protecting boats, utility trailers, RVs, and cargo trailers.