Replacement Diversi-Tech Key 5502 For Coupler Lock
Updated 08/15/2025 | Published 07/28/2025
Question:
I am looking for replacement tube key for my dt security coupler lock my key number is stamped 5502 do you have one
asked by: Scott J
Expert Reply:
Hi Scott!
The part you are looking for is DT-KEYR5502. but this was discontinued quite some time ago, unfortunately. It looked like there were still a few floating around out there in the ether, but they are pretty few and far between.
If you come up dry though, Fastway took over Diversi-Tech so the Universal Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # FA86-0015-308 will be the same coupler lock, just with different keys and cores. We do have replacement keys for these (# FA-KEY-308 specifically for this core number), so multiple sets can be ordered if desired.
Did you lose the key or are you just wanting some back ups?
Sorry I don't have a better answer for you.
Product Page this Question was Asked From
Fastway Universal Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers - Key 308
- Trailer Tongue Lock
- Surround Lock
- Universal Application Lock
- Keyed Alike
- Steel
- Fits 1-7/8 Inch Ball
- Fits 2 Inch Ball
- Fits 2-5/16 Inch Ball
- Fastway
more information >
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Lazer S.
8/15/2025
Hey Scott, Did you decide to go with the Fastway Universal Coupler Lock as a replacement for your DT security coupler lock? I'm curious to know if it worked out for you since it might help others in a similar situation. Let me know if there's anything else I can do to assist!