What Locks Can I get Keyed Alike to a Lock I Already Have on my Trailer

Updated 12/01/2025 | Published 10/29/2025

Products Featured in This Question

Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers

(894)

$34.22

Master Lock Set - Coupler Ball Lock, Locking Hitch Pin, and Coupler Latch Lock

(19)

$54.49

Question:

i have several master lock barrel style locks already on my trailer. can i get this tongue lock with the same keyed lock as the locks i already have on the trailer?

asked by: Donald W

Expert Reply:

That's a really great question, Donald.

The short answer is yes, some of our locks can be keyed alike, but not all of them. The key thing to know (no pun intended!) is that locks can only be keyed alike within the same brand. So, for example, if you already have a Master Lock, you’d need to choose another Master Lock that offers the “keyed alike” option to match your existing key.

When you’re browsing our locks, check out the filter menu on the left side of the page, there’s an option to show only the locks that can be keyed alike. I’ve included a picture below so you can see what that looks like on our site.

If you’d rather have a little help picking the right one, feel free to give us a call! We can double-check your key number and make sure you get exactly what you need, sometimes that’s the easiest way.

And if you’re open to it, we also have a lock kit (part # ML44VR) that includes a coupler ball lock, two hitch locks, and a coupler latch lock, all keyed alike right out of the box.

expert reply by: Gwendolyn Y

Key Filter
(click to enlarge)

Gwendolyn Y.

12/1/2025

Hey Donald, did you end up finding a Master Lock option that could be keyed alike with the locks already on your trailer? Knowing what worked might help others trying to match their existing keys too.