Master Lock Adjustable Stainless Steel Trailer Coupler Lock 2847DAT — Fits up to 2-3/4" Latch, Weather-Resistant

Master Lock 2847DAT is a stainless-steel adjustable coupler lock that secures your trailer by locking the coupler latch quickly and resisting corrosion.

This compact coupler lock is built for straightforward installation and long-term outdoor use. Crafted with stainless steel components and a weather touch seal, it protects the keyway and shaft from dirt and moisture while fitting a wide range of coupler latch widths. The lock ships with two keys and an ergonomically shaped shaft end to make insertion and removal easier.

How do I install the coupler lock on my trailer?

Installation is simple and fast: close the coupler latch, insert the shackle through the latch hole, slide the lock body onto the shackle until it sits tight against the latch, then lock and remove the key. No special tools are required, and the ergonomic shaft end helps you seat the lock precisely.

• Close coupler latch fully before inserting shackle
• Push lock body onto shackle until snug against latch
• Turn key to lock, then remove key and stow it safely

Will this coupler lock fit my trailer's latch?

The adjustable design accommodates most common latch sizes, fitting coupler latch widths up to 2-3/4 inches. That makes it suitable for many utility, boat, and cargo trailers; verify your latch width before purchasing to ensure compatibility.

• Adjustable to fit latch widths up to 2-3/4"
• Stainless components work with metal latches to resist wear
• Compact profile avoids interference with towing accessories

How does this lock hold up in outdoor conditions?

Stainless steel components provide corrosion resistance for prolonged outdoor exposure, while the weather touch seal helps keep moisture and grit out of the keyway and shaft. Regular cleaning and lubrication will further extend reliable operation.

• Stainless steel resists rust and corrosion
• Weather touch seal protects internal parts from dirt and water
• Includes two keys so you have a spare on hand

What features make it easy to use day-to-day?

The shaft end is ergonomically shaped for easier alignment and insertion, and the straightforward lock-and-remove key action keeps routine securing quick. Its compact design minimizes snagging when attached to the coupler.

• Ergonomic shaft end for easier handling and installation
• Compact lock body reduces obstruction on the coupler
• Two included keys help avoid lockouts

Who is this for: The Master Lock 2847DAT is designed for trailer owners who want a robust, easy-to-install coupler lock that withstands outdoor conditions. It's a good option for boaters, landscapers, contractors, and anyone who stores or parks trailers outdoors and needs a compact, corrosion-resistant locking solution that fits common coupler latch sizes.