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Master Lock Universal Heavy-Duty Trailer Coupler and Latch Lock Review

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Review of the Master Lock Universal Heavy-Duty Trailer Coupler and Latch Lock


Today well be reviewing the Master Lock Universal Heavy Duty Trailer Coupler and Latch Lock, part number 3784dat. This Master Lock prevents theft from the trailer by encasing the coupler in steel and preventing hook up designed for use when trailers not in tow. Constructed with a laminated, riveted steel frame, and additional steel on top and sides of ball enhances security. This Master Lock fits most 2 5/16 ball couplers including the straight lip, road lip, and surge brake hydraulic couplers. The Master Lock has an integrated weather resistant cover that keeps dirt and moisture out of the key way, includes two keys and has a limited lifetime warranty. Now that weve gone over some of the features of the Master Lock, well show you how to install it.

To begin our installation we will first uncover the key hole with the protective covering and insert the key to release a coupler lock. We will then set the trailer coupler onto the lock sliding the ball into the inner part of the lock, and then using the key to secure it in place. Once the trailer coupler is secured to the Master Lock, we will then move to the top of the trailer coupler and insert the trailer coupler latch lock and secure it with the key lock. And, thats it for todays review of the Master Lock Universal Heavy Duty Trailer Coupler and Latch Lock, part number 3784dat.


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Info for this part was:

Employee Patrick B
Video by:
Patrick B
Employee Matthew K
Installed by:
Matthew K
Employee Kathleen M
Video Edited:
Kathleen M
Employee Mike H
Video Edited:
Mike H

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